/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:06:59,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:06:59,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:06:59,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:06:59,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:06:59,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:06:59,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:06:59,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:06:59,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:06:59,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:06:59,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:06:59,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:06:59,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:06:59,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:06:59,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:06:59,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:06:59,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:06:59,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:06:59,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:06:59,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:06:59,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:06:59,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:06:59,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:06:59,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:06:59,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:06:59,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:06:59,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:06:59,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:06:59,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:06:59,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:06:59,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:06:59,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:06:59,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:06:59,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:06:59,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:06:59,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:06:59,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:06:59,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:06:59,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:06:59,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:06:59,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:06:59,957 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 [2020-08-19 00:06:59,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:06:59,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:06:59,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:06:59,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:06:59,982 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:06:59,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:06:59,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:06:59,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:06:59,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:06:59,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:06:59,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:06:59,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:06:59,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:06:59,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:06:59,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:06:59,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:06:59,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:06:59,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:06:59,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:06:59,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:06:59,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:06:59,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:06:59,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:06:59,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:06:59,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:06:59,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:06:59,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:06:59,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:06:59,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:06:59,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:07:00,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:07:00,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:07:00,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:07:00,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:07:00,315 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:07:00,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-19 00:07:00,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/617ec00c2/b95310c040cc45ed8ddfba07c708e6e7/FLAGc2e9ee287 [2020-08-19 00:07:01,004 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:07:01,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-19 00:07:01,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/617ec00c2/b95310c040cc45ed8ddfba07c708e6e7/FLAGc2e9ee287 [2020-08-19 00:07:01,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/617ec00c2/b95310c040cc45ed8ddfba07c708e6e7 [2020-08-19 00:07:01,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:07:01,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:07:01,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:07:01,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:07:01,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:07:01,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:07:01" (1/1) ... [2020-08-19 00:07:01,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:01, skipping insertion in model container [2020-08-19 00:07:01,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:07:01" (1/1) ... [2020-08-19 00:07:01,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:07:01,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:07:01,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:07:01,855 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:07:01,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:07:02,027 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:07:02,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02 WrapperNode [2020-08-19 00:07:02,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:07:02,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:07:02,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:07:02,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:07:02,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (1/1) ... [2020-08-19 00:07:02,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:07:02,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:07:02,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:07:02,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:07:02,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (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 [2020-08-19 00:07:02,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:07:02,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:07:02,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:07:02,249 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:07:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:07:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-19 00:07:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-19 00:07:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-19 00:07:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-19 00:07:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-19 00:07:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-19 00:07:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:07:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-19 00:07:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-19 00:07:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:07:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:07:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:07:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:07:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:07:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:07:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:07:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:07:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:07:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:07:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:07:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:07:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:07:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:07:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:07:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:07:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:07:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:07:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:07:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:07:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:07:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:07:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:07:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:07:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:07:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:07:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:07:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:07:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:07:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:07:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:07:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:07:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:07:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:07:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:07:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:07:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:07:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:07:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:07:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:07:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:07:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:07:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:07:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:07:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:07:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:07:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:07:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:07:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:07:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:07:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:07:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:07:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:07:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:07:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:07:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-19 00:07:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:07:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-19 00:07:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-19 00:07:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:07:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-19 00:07:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-19 00:07:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:07:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-19 00:07:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-19 00:07:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-19 00:07:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:07:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:07:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:07:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:07:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:07:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:07:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:07:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:07:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:07:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:07:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:07:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:07:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:07:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:07:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:07:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:07:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:07:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:07:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:07:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:07:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:07:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:07:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:07:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:07:03,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:07:03,474 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:07:03,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:07:03 BoogieIcfgContainer [2020-08-19 00:07:03,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:07:03,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:07:03,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:07:03,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:07:03,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:07:01" (1/3) ... [2020-08-19 00:07:03,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44736c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:07:03, skipping insertion in model container [2020-08-19 00:07:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:07:02" (2/3) ... [2020-08-19 00:07:03,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44736c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:07:03, skipping insertion in model container [2020-08-19 00:07:03,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:07:03" (3/3) ... [2020-08-19 00:07:03,496 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2020-08-19 00:07:03,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:07:03,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:07:03,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:07:03,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:07:03,568 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:07:03,568 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:07:03,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:07:03,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:07:03,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:07:03,573 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:07:03,573 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:07:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-19 00:07:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 00:07:03,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:03,625 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:03,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash -777436733, now seen corresponding path program 1 times [2020-08-19 00:07:03,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:03,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415800670] [2020-08-19 00:07:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,428 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:04,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:07:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:07:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:04,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415800670] [2020-08-19 00:07:04,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:04,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:07:04,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537047319] [2020-08-19 00:07:04,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:07:04,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:04,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:07:04,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:07:04,607 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2020-08-19 00:07:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:06,795 INFO L93 Difference]: Finished difference Result 436 states and 577 transitions. [2020-08-19 00:07:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:07:06,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-19 00:07:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:06,817 INFO L225 Difference]: With dead ends: 436 [2020-08-19 00:07:06,817 INFO L226 Difference]: Without dead ends: 248 [2020-08-19 00:07:06,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:07:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-19 00:07:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 199. [2020-08-19 00:07:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-19 00:07:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-08-19 00:07:06,938 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 78 [2020-08-19 00:07:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:06,939 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-08-19 00:07:06,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:07:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2020-08-19 00:07:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 00:07:06,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:06,945 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:06,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:07:06,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:06,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1216022007, now seen corresponding path program 1 times [2020-08-19 00:07:06,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:06,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000640429] [2020-08-19 00:07:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,316 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:07:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 00:07:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:07,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000640429] [2020-08-19 00:07:07,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:07,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:07:07,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15083973] [2020-08-19 00:07:07,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:07:07,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:07,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:07:07,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:07:07,414 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 6 states. [2020-08-19 00:07:08,125 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:07:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:09,908 INFO L93 Difference]: Finished difference Result 360 states and 455 transitions. [2020-08-19 00:07:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:07:09,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-19 00:07:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:09,914 INFO L225 Difference]: With dead ends: 360 [2020-08-19 00:07:09,914 INFO L226 Difference]: Without dead ends: 232 [2020-08-19 00:07:09,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:07:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-19 00:07:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 190. [2020-08-19 00:07:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 00:07:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2020-08-19 00:07:09,979 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 79 [2020-08-19 00:07:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:09,979 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2020-08-19 00:07:09,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:07:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2020-08-19 00:07:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:07:09,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:09,983 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:09,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:07:09,984 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:09,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2141579182, now seen corresponding path program 1 times [2020-08-19 00:07:09,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:09,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809923736] [2020-08-19 00:07:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,350 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:07:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:07:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:10,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809923736] [2020-08-19 00:07:10,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:10,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:07:10,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071679413] [2020-08-19 00:07:10,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:07:10,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:10,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:07:10,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:07:10,537 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand 12 states. [2020-08-19 00:07:11,155 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:11,820 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-19 00:07:12,608 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 00:07:13,625 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:14,058 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 00:07:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:17,875 INFO L93 Difference]: Finished difference Result 619 states and 790 transitions. [2020-08-19 00:07:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:07:17,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 00:07:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:17,882 INFO L225 Difference]: With dead ends: 619 [2020-08-19 00:07:17,882 INFO L226 Difference]: Without dead ends: 470 [2020-08-19 00:07:17,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:07:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-08-19 00:07:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 379. [2020-08-19 00:07:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-19 00:07:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 476 transitions. [2020-08-19 00:07:17,998 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 476 transitions. Word has length 84 [2020-08-19 00:07:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:17,999 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 476 transitions. [2020-08-19 00:07:17,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:07:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 476 transitions. [2020-08-19 00:07:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 00:07:18,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:18,002 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:18,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:07:18,003 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1535963779, now seen corresponding path program 1 times [2020-08-19 00:07:18,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:18,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182079059] [2020-08-19 00:07:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,317 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 00:07:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:07:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 00:07:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:18,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182079059] [2020-08-19 00:07:18,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:18,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:07:18,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411601963] [2020-08-19 00:07:18,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:07:18,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:18,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:07:18,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:07:18,490 INFO L87 Difference]: Start difference. First operand 379 states and 476 transitions. Second operand 10 states. [2020-08-19 00:07:18,973 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:20,582 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:21,112 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:21,366 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:21,708 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:22,290 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:07:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:24,587 INFO L93 Difference]: Finished difference Result 1218 states and 1607 transitions. [2020-08-19 00:07:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:07:24,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-19 00:07:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:24,595 INFO L225 Difference]: With dead ends: 1218 [2020-08-19 00:07:24,595 INFO L226 Difference]: Without dead ends: 880 [2020-08-19 00:07:24,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-08-19 00:07:24,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-19 00:07:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 696. [2020-08-19 00:07:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-19 00:07:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 880 transitions. [2020-08-19 00:07:24,820 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 880 transitions. Word has length 90 [2020-08-19 00:07:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:24,820 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 880 transitions. [2020-08-19 00:07:24,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:07:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 880 transitions. [2020-08-19 00:07:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:07:24,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:24,824 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:24,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:07:24,825 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:24,825 INFO L82 PathProgramCache]: Analyzing trace with hash -859073223, now seen corresponding path program 1 times [2020-08-19 00:07:24,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:24,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19873698] [2020-08-19 00:07:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,149 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:25,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:07:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:07:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:07:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 00:07:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:25,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19873698] [2020-08-19 00:07:25,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:25,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:07:25,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275857564] [2020-08-19 00:07:25,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:07:25,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:07:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:07:25,320 INFO L87 Difference]: Start difference. First operand 696 states and 880 transitions. Second operand 11 states. [2020-08-19 00:07:26,183 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:27,848 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:28,196 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:28,499 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:29,525 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:29,874 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:07:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:32,239 INFO L93 Difference]: Finished difference Result 1972 states and 2746 transitions. [2020-08-19 00:07:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:07:32,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-19 00:07:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:32,250 INFO L225 Difference]: With dead ends: 1972 [2020-08-19 00:07:32,250 INFO L226 Difference]: Without dead ends: 1317 [2020-08-19 00:07:32,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:07:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-19 00:07:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1112. [2020-08-19 00:07:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-08-19 00:07:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1445 transitions. [2020-08-19 00:07:32,471 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1445 transitions. Word has length 94 [2020-08-19 00:07:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:32,471 INFO L479 AbstractCegarLoop]: Abstraction has 1112 states and 1445 transitions. [2020-08-19 00:07:32,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:07:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1445 transitions. [2020-08-19 00:07:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 00:07:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:32,476 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:32,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:07:32,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:32,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1170559539, now seen corresponding path program 1 times [2020-08-19 00:07:32,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:32,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179582042] [2020-08-19 00:07:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,795 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:07:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:07:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:33,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:07:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:07:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:33,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179582042] [2020-08-19 00:07:33,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:33,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:07:33,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387080532] [2020-08-19 00:07:33,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:07:33,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:33,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:07:33,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:07:33,056 INFO L87 Difference]: Start difference. First operand 1112 states and 1445 transitions. Second operand 11 states. [2020-08-19 00:07:34,982 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:35,328 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 00:07:35,634 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:07:35,950 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:07:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:37,812 INFO L93 Difference]: Finished difference Result 2484 states and 3550 transitions. [2020-08-19 00:07:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:07:37,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-08-19 00:07:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:37,825 INFO L225 Difference]: With dead ends: 2484 [2020-08-19 00:07:37,825 INFO L226 Difference]: Without dead ends: 1413 [2020-08-19 00:07:37,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:07:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-08-19 00:07:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1138. [2020-08-19 00:07:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-08-19 00:07:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1473 transitions. [2020-08-19 00:07:38,160 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1473 transitions. Word has length 127 [2020-08-19 00:07:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:38,162 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1473 transitions. [2020-08-19 00:07:38,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:07:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1473 transitions. [2020-08-19 00:07:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 00:07:38,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:38,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:38,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:07:38,174 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash 141200241, now seen corresponding path program 1 times [2020-08-19 00:07:38,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:38,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830323993] [2020-08-19 00:07:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,602 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:07:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:07:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:07:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:07:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:38,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830323993] [2020-08-19 00:07:38,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:38,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 00:07:38,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576982971] [2020-08-19 00:07:38,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:07:38,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:38,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:07:38,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:07:38,876 INFO L87 Difference]: Start difference. First operand 1138 states and 1473 transitions. Second operand 14 states. [2020-08-19 00:07:39,556 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:40,084 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:41,349 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:41,713 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:42,033 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:07:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:44,258 INFO L93 Difference]: Finished difference Result 2530 states and 3598 transitions. [2020-08-19 00:07:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:07:44,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-08-19 00:07:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:44,268 INFO L225 Difference]: With dead ends: 2530 [2020-08-19 00:07:44,269 INFO L226 Difference]: Without dead ends: 1433 [2020-08-19 00:07:44,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:07:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-08-19 00:07:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1154. [2020-08-19 00:07:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-08-19 00:07:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1489 transitions. [2020-08-19 00:07:44,567 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1489 transitions. Word has length 127 [2020-08-19 00:07:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:44,568 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1489 transitions. [2020-08-19 00:07:44,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:07:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1489 transitions. [2020-08-19 00:07:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 00:07:44,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:44,573 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:44,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:07:44,573 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash 265273488, now seen corresponding path program 1 times [2020-08-19 00:07:44,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:44,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865758711] [2020-08-19 00:07:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:44,997 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:07:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:07:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:07:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:07:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:07:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:07:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:07:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:07:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:07:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:07:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:07:45,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865758711] [2020-08-19 00:07:45,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:45,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:07:45,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771681294] [2020-08-19 00:07:45,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:07:45,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:07:45,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:07:45,335 INFO L87 Difference]: Start difference. First operand 1154 states and 1489 transitions. Second operand 9 states. [2020-08-19 00:07:46,208 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:47,075 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:07:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:51,312 INFO L93 Difference]: Finished difference Result 3666 states and 5227 transitions. [2020-08-19 00:07:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 00:07:51,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-08-19 00:07:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:51,331 INFO L225 Difference]: With dead ends: 3666 [2020-08-19 00:07:51,331 INFO L226 Difference]: Without dead ends: 2553 [2020-08-19 00:07:51,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:07:51,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-08-19 00:07:51,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2184. [2020-08-19 00:07:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-08-19 00:07:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2871 transitions. [2020-08-19 00:07:51,918 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2871 transitions. Word has length 127 [2020-08-19 00:07:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:51,918 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 2871 transitions. [2020-08-19 00:07:51,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:07:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2871 transitions. [2020-08-19 00:07:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 00:07:51,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:51,925 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:51,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:07:51,925 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:51,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:51,926 INFO L82 PathProgramCache]: Analyzing trace with hash 355592246, now seen corresponding path program 1 times [2020-08-19 00:07:51,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:51,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995502936] [2020-08-19 00:07:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:07:52,040 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:07:52,040 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:07:52,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:07:52,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:07:52 BoogieIcfgContainer [2020-08-19 00:07:52,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:07:52,103 INFO L168 Benchmark]: Toolchain (without parser) took 50801.19 ms. Allocated memory was 138.9 MB in the beginning and 854.6 MB in the end (delta: 715.7 MB). Free memory was 100.7 MB in the beginning and 679.5 MB in the end (delta: -578.8 MB). Peak memory consumption was 136.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:52,104 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:07:52,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.40 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 163.3 MB in the end (delta: -62.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:52,113 INFO L168 Benchmark]: Boogie Preprocessor took 125.17 ms. Allocated memory is still 201.3 MB. Free memory was 163.3 MB in the beginning and 159.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:52,115 INFO L168 Benchmark]: RCFGBuilder took 1331.15 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 159.2 MB in the beginning and 179.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:52,116 INFO L168 Benchmark]: TraceAbstraction took 48613.33 ms. Allocated memory was 233.3 MB in the beginning and 854.6 MB in the end (delta: 621.3 MB). Free memory was 177.8 MB in the beginning and 679.5 MB in the end (delta: -501.7 MB). Peak memory consumption was 119.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:52,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.40 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 163.3 MB in the end (delta: -62.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.17 ms. Allocated memory is still 201.3 MB. Free memory was 163.3 MB in the beginning and 159.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1331.15 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 159.2 MB in the beginning and 179.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48613.33 ms. Allocated memory was 233.3 MB in the beginning and 854.6 MB in the end (delta: 621.3 MB). Free memory was 177.8 MB in the beginning and 679.5 MB in the end (delta: -501.7 MB). Peak memory consumption was 119.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int __SELECTED_FEATURE_base ; [L41] int __SELECTED_FEATURE_highWaterSensor ; [L42] int __SELECTED_FEATURE_lowWaterSensor ; [L43] int __SELECTED_FEATURE_methaneQuery ; [L44] int __SELECTED_FEATURE_methaneAlarm ; [L45] int __SELECTED_FEATURE_stopCommand ; [L46] int __SELECTED_FEATURE_startCommand ; [L47] int __GUIDSL_ROOT_PRODUCTION ; [L140] int pumpRunning = 0; [L141] int systemActive = 1; [L641] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L914] int waterLevel = 1; [L915] int methaneLevelCritical = 0; [L1026] int cleanupTimeShifts = 4; [L1099] int retValue_acc ; [L1100] int tmp ; [L1104] CALL select_helpers() [L872] __GUIDSL_ROOT_PRODUCTION = 1 [L1104] RET select_helpers() [L1105] CALL select_features() [L857] __SELECTED_FEATURE_base = 1 [L858] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L858] RET, EXPR select_one() [L858] __SELECTED_FEATURE_highWaterSensor = select_one() [L859] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L859] RET, EXPR select_one() [L859] __SELECTED_FEATURE_lowWaterSensor = select_one() [L860] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L860] RET, EXPR select_one() [L860] __SELECTED_FEATURE_methaneQuery = select_one() [L861] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L861] RET, EXPR select_one() [L861] __SELECTED_FEATURE_methaneAlarm = select_one() [L862] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L862] RET, EXPR select_one() [L862] __SELECTED_FEATURE_stopCommand = select_one() [L863] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L863] RET, EXPR select_one() [L863] __SELECTED_FEATURE_startCommand = select_one() [L1105] RET select_features() [L1106] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = __SELECTED_FEATURE_base [L881] return (retValue_acc); [L1106] RET, EXPR valid_product() [L1106] tmp = valid_product() [L1108] COND TRUE \read(tmp) [L1110] FCALL setup() [L1111] CALL runTest() [L1093] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 [L64] COND TRUE 1 [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) [L76] CALL waterRise() [L932] COND TRUE waterLevel < 2 [L933] waterLevel = waterLevel + 1 [L76] RET waterRise() [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___0) [L86] CALL changeMethaneLevel() [L944] COND FALSE !(\read(methaneLevelCritical)) [L947] methaneLevelCritical = 1 [L86] RET changeMethaneLevel() [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) [L95] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) [L119] CALL timeShift() [L148] COND FALSE !(\read(pumpRunning)) [L155] COND TRUE \read(systemActive) [L157] CALL processEnvironment() [L291] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L298] CALL processEnvironment__before__methaneAlarm() [L248] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L255] CALL processEnvironment__before__lowWaterSensor() [L205] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L207] CALL processEnvironment__role__highWaterSensor() [L177] int tmp ; [L180] COND TRUE ! pumpRunning [L182] CALL, EXPR isHighWaterLevel() [L411] int retValue_acc ; [L412] int tmp ; [L413] int tmp___0 ; [L417] CALL, EXPR isHighWaterSensorDry() [L994] int retValue_acc ; [L997] COND FALSE !(waterLevel < 2) [L1001] retValue_acc = 0 [L1002] return (retValue_acc); [L417] RET, EXPR isHighWaterSensorDry() [L417] tmp = isHighWaterSensorDry() [L419] COND FALSE !(\read(tmp)) [L422] tmp___0 = 1 [L424] retValue_acc = tmp___0 [L425] return (retValue_acc); [L182] RET, EXPR isHighWaterLevel() [L182] tmp = isHighWaterLevel() [L184] COND TRUE \read(tmp) [L186] CALL activatePump() [L333] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) [L340] CALL activatePump__before__methaneQuery() [L308] pumpRunning = 1 [L340] RET activatePump__before__methaneQuery() [L186] RET activatePump() [L207] RET processEnvironment__role__highWaterSensor() [L255] RET processEnvironment__before__lowWaterSensor() [L298] RET processEnvironment__before__methaneAlarm() [L157] RET processEnvironment() [L163] CALL __utac_acc__Specification1_spec__1() [L888] int tmp ; [L889] int tmp___0 ; [L893] CALL, EXPR isMethaneLevelCritical() [L953] int retValue_acc ; [L956] retValue_acc = methaneLevelCritical [L957] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L897] CALL, EXPR isPumpRunning() [L366] int retValue_acc ; [L369] retValue_acc = pumpRunning [L370] return (retValue_acc); [L897] RET, EXPR isPumpRunning() [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) [L901] CALL __automaton_fail() [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 298 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.4s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 41.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1345 SDtfs, 5374 SDslu, 915 SDs, 0 SdLazy, 9550 SolverSat, 4223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 295 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2184occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1494 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 798 ConstructedInterpolants, 0 QuantifiedInterpolants, 315242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 360/360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...