/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:09:49,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:09:49,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:09:49,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:09:49,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:09:49,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:09:49,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:09:49,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:09:49,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:09:49,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:09:49,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:09:49,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:09:49,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:09:49,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:09:49,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:09:49,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:09:49,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:09:49,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:09:49,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:09:49,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:09:49,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:09:49,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:09:49,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:09:49,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:09:49,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:09:49,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:09:49,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:09:49,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:09:49,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:09:49,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:09:49,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:09:49,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:09:49,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:09:49,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:09:49,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:09:49,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:09:49,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:09:49,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:09:49,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:09:49,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:09:49,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:09:49,979 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 04:09:50,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:09:50,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:09:50,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:09:50,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:09:50,019 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:09:50,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:09:50,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:09:50,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:09:50,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:09:50,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:09:50,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:09:50,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:09:50,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:09:50,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:09:50,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:09:50,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:09:50,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:09:50,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:09:50,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:09:50,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:09:50,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:09:50,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:09:50,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:09:50,024 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:09:50,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:09:50,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:09:50,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:09:50,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:09:50,373 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:09:50,374 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-19 04:09:50,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35ee9d940/7b8924685f37421db495c639a589c99a/FLAGfa6e27c75 [2020-08-19 04:09:50,920 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:09:50,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-19 04:09:50,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35ee9d940/7b8924685f37421db495c639a589c99a/FLAGfa6e27c75 [2020-08-19 04:09:51,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35ee9d940/7b8924685f37421db495c639a589c99a [2020-08-19 04:09:51,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:09:51,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:09:51,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:09:51,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:09:51,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:09:51,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:51,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59fe9fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51, skipping insertion in model container [2020-08-19 04:09:51,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:51,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:09:51,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:09:51,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:09:51,795 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:09:51,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:09:51,962 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:09:51,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51 WrapperNode [2020-08-19 04:09:51,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:09:51,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:09:51,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:09:51,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:09:51,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:51,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:51,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:51,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:52,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:52,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:52,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (1/1) ... [2020-08-19 04:09:52,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:09:52,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:09:52,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:09:52,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:09:52,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (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 04:09:52,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:09:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:09:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:09:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:09:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:09:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:09:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:09:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:09:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:09:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:09:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:09:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:09:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:09:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:09:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:09:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:09:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:09:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:09:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:09:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:09:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:09:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:09:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:09:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:09:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:09:52,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:09:52,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:09:52,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:09:52,164 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:09:52,164 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:09:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:09:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:09:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:09:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:09:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:09:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:09:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:09:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:09:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:09:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:09:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:09:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:09:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:09:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:09:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:09:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:09:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:09:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:09:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:09:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:09:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:09:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:09:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:09:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:09:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:09:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:09:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:09:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:09:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:09:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:09:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:09:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:09:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:09:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:09:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:09:53,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:09:53,381 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:09:53,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:09:53 BoogieIcfgContainer [2020-08-19 04:09:53,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:09:53,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:09:53,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:09:53,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:09:53,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:09:51" (1/3) ... [2020-08-19 04:09:53,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8e4075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:09:53, skipping insertion in model container [2020-08-19 04:09:53,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:51" (2/3) ... [2020-08-19 04:09:53,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8e4075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:09:53, skipping insertion in model container [2020-08-19 04:09:53,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:09:53" (3/3) ... [2020-08-19 04:09:53,403 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-19 04:09:53,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:09:53,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:09:53,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:09:53,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:09:53,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:09:53,468 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:09:53,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:09:53,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:09:53,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:09:53,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:09:53,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:09:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-19 04:09:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:09:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:53,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:53,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:53,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-19 04:09:53,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:53,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340823408] [2020-08-19 04:09:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,235 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:54,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:09:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:09:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:54,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340823408] [2020-08-19 04:09:54,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:54,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:09:54,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599573113] [2020-08-19 04:09:54,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:09:54,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:09:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:09:54,380 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-19 04:09:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:55,773 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-19 04:09:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:09:55,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:09:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:55,790 INFO L225 Difference]: With dead ends: 354 [2020-08-19 04:09:55,791 INFO L226 Difference]: Without dead ends: 191 [2020-08-19 04:09:55,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:09:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-19 04:09:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-19 04:09:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 04:09:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-19 04:09:55,926 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-19 04:09:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:55,926 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-19 04:09:55,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:09:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-19 04:09:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:09:55,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:55,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:09:55,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-19 04:09:55,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:55,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874933470] [2020-08-19 04:09:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,294 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:09:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:56,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874933470] [2020-08-19 04:09:56,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:56,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:09:56,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342968760] [2020-08-19 04:09:56,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:09:56,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:56,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:09:56,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:09:56,343 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-19 04:09:56,776 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:57,865 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-19 04:09:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:09:57,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:09:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:57,874 INFO L225 Difference]: With dead ends: 283 [2020-08-19 04:09:57,874 INFO L226 Difference]: Without dead ends: 175 [2020-08-19 04:09:57,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:09:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-19 04:09:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-19 04:09:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-19 04:09:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-19 04:09:57,953 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-19 04:09:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:57,954 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-19 04:09:57,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:09:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-19 04:09:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:09:57,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:57,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:57,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:09:57,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:57,967 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-19 04:09:57,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:57,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42991316] [2020-08-19 04:09:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,329 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:09:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:09:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:58,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42991316] [2020-08-19 04:09:58,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:58,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:58,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783394453] [2020-08-19 04:09:58,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:58,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:58,442 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-19 04:09:58,810 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:59,180 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:59,442 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:59,679 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:01,139 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-19 04:10:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:10:01,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 04:10:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:01,145 INFO L225 Difference]: With dead ends: 296 [2020-08-19 04:10:01,145 INFO L226 Difference]: Without dead ends: 175 [2020-08-19 04:10:01,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:10:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-19 04:10:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-19 04:10:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-19 04:10:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-19 04:10:01,187 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-19 04:10:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:01,188 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-19 04:10:01,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:10:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-19 04:10:01,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 04:10:01,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:01,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:01,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:10:01,190 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:01,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-19 04:10:01,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:01,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615203171] [2020-08-19 04:10:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,504 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:10:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:10:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 04:10:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:10:01,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615203171] [2020-08-19 04:10:01,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:10:01,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:10:01,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909876966] [2020-08-19 04:10:01,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:10:01,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:10:01,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:10:01,628 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-19 04:10:01,932 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:03,204 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:04,096 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-19 04:10:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:10:04,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 04:10:04,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:04,105 INFO L225 Difference]: With dead ends: 404 [2020-08-19 04:10:04,105 INFO L226 Difference]: Without dead ends: 283 [2020-08-19 04:10:04,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:10:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-19 04:10:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-19 04:10:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 04:10:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-19 04:10:04,167 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-19 04:10:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:04,169 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-19 04:10:04,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:10:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-19 04:10:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 04:10:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:04,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:10:04,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-19 04:10:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:04,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812249989] [2020-08-19 04:10:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,486 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:10:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 04:10:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 04:10:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:10:04,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812249989] [2020-08-19 04:10:04,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:10:04,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:10:04,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696664345] [2020-08-19 04:10:04,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:10:04,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:04,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:10:04,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:10:04,584 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-19 04:10:04,987 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:06,022 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:06,369 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:06,940 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:07,170 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:07,486 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:08,697 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-19 04:10:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:10:08,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 04:10:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:08,702 INFO L225 Difference]: With dead ends: 718 [2020-08-19 04:10:08,703 INFO L226 Difference]: Without dead ends: 502 [2020-08-19 04:10:08,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:10:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-19 04:10:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-19 04:10:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 04:10:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-19 04:10:08,802 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-19 04:10:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:08,803 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-19 04:10:08,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:10:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-19 04:10:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 04:10:08,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:08,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:08,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:10:08,805 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:08,806 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-19 04:10:08,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:08,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675145101] [2020-08-19 04:10:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,153 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:10:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:10:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:10:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 04:10:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:10:09,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675145101] [2020-08-19 04:10:09,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:10:09,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:10:09,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392689433] [2020-08-19 04:10:09,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:10:09,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:09,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:10:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:10:09,304 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-19 04:10:09,688 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:10,864 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:11,176 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:12,224 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:12,483 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:12,718 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:13,091 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-19 04:10:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:10:13,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 04:10:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:13,099 INFO L225 Difference]: With dead ends: 544 [2020-08-19 04:10:13,100 INFO L226 Difference]: Without dead ends: 541 [2020-08-19 04:10:13,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:10:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-19 04:10:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-19 04:10:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 04:10:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-19 04:10:13,211 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-19 04:10:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:13,212 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-19 04:10:13,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:10:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-19 04:10:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 04:10:13,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:13,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:13,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:10:13,215 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-19 04:10:13,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:13,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048120016] [2020-08-19 04:10:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,492 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:10:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:10:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:10:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 04:10:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:10:13,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048120016] [2020-08-19 04:10:13,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:10:13,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:10:13,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492678760] [2020-08-19 04:10:13,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:10:13,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:10:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:10:13,686 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-19 04:10:14,622 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:14,864 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:10:15,129 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:15,351 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:16,582 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-19 04:10:16,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:10:16,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-19 04:10:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:16,588 INFO L225 Difference]: With dead ends: 960 [2020-08-19 04:10:16,588 INFO L226 Difference]: Without dead ends: 549 [2020-08-19 04:10:16,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:10:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-19 04:10:16,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-19 04:10:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-19 04:10:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-19 04:10:16,674 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-19 04:10:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:16,675 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-19 04:10:16,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:10:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-19 04:10:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 04:10:16,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:16,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:16,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:10:16,678 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:16,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-19 04:10:16,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:16,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867595268] [2020-08-19 04:10:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:16,992 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:16,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:10:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:10:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:10:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 04:10:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:10:17,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867595268] [2020-08-19 04:10:17,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:10:17,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:10:17,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037241957] [2020-08-19 04:10:17,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:10:17,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:17,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:10:17,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:10:17,180 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-19 04:10:17,638 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:17,868 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:18,089 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:18,772 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:19,029 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:19,308 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:10:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:20,670 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-19 04:10:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:10:20,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-19 04:10:20,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:20,676 INFO L225 Difference]: With dead ends: 980 [2020-08-19 04:10:20,677 INFO L226 Difference]: Without dead ends: 559 [2020-08-19 04:10:20,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:10:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-19 04:10:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-19 04:10:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-19 04:10:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-19 04:10:20,780 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-19 04:10:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:20,780 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-19 04:10:20,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:10:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-19 04:10:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 04:10:20,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:20,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:20,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:10:20,788 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:20,789 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-19 04:10:20,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:20,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454654501] [2020-08-19 04:10:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,104 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:10:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:10:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:10:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 04:10:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:10:21,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454654501] [2020-08-19 04:10:21,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:10:21,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:10:21,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458287796] [2020-08-19 04:10:21,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:10:21,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:21,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:10:21,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:10:21,265 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-19 04:10:21,797 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:22,502 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:25,047 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-19 04:10:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:10:25,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-19 04:10:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:25,054 INFO L225 Difference]: With dead ends: 1342 [2020-08-19 04:10:25,054 INFO L226 Difference]: Without dead ends: 913 [2020-08-19 04:10:25,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:10:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-19 04:10:25,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-19 04:10:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 04:10:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-19 04:10:25,220 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-19 04:10:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:25,222 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-19 04:10:25,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:10:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-19 04:10:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:10:25,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:25,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:25,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:10:25,226 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:25,227 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-19 04:10:25,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:25,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273759200] [2020-08-19 04:10:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,535 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:10:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:10:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:10:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 04:10:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 04:10:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:10:26,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273759200] [2020-08-19 04:10:26,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:10:26,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 04:10:26,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589189127] [2020-08-19 04:10:26,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 04:10:26,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:26,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 04:10:26,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 04:10:26,101 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-19 04:10:26,797 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:27,137 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:27,410 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:27,654 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:28,265 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:29,344 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:29,669 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:29,938 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:30,230 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:30,574 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:30,861 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:31,381 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 04:10:31,934 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 04:10:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:34,582 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-19 04:10:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 04:10:34,582 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-19 04:10:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:34,588 INFO L225 Difference]: With dead ends: 1649 [2020-08-19 04:10:34,588 INFO L226 Difference]: Without dead ends: 880 [2020-08-19 04:10:34,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 04:10:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-19 04:10:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-19 04:10:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-19 04:10:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-19 04:10:34,741 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-19 04:10:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:34,742 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-19 04:10:34,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 04:10:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-19 04:10:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-19 04:10:34,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:10:34,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:10:34,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:10:34,748 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:10:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:10:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-19 04:10:34,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:10:34,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051046742] [2020-08-19 04:10:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:10:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,034 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:10:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:10:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:10:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:10:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:10:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:10:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:10:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:10:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:10:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:10:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:10:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 04:10:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 04:10:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:10:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:10:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:10:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:10:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 04:10:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 04:10:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:10:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 04:10:35,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051046742] [2020-08-19 04:10:35,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:10:35,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 04:10:35,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119482851] [2020-08-19 04:10:35,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 04:10:35,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:10:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 04:10:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:10:35,415 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-19 04:10:36,120 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:36,426 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:36,704 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:36,939 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:10:37,575 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:10:38,687 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:39,020 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:39,302 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:39,593 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:39,931 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:40,208 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:41,445 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:41,695 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:41,956 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:42,191 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:10:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:10:43,546 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-19 04:10:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 04:10:43,552 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-19 04:10:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:10:43,554 INFO L225 Difference]: With dead ends: 1402 [2020-08-19 04:10:43,554 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:10:43,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-19 04:10:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:10:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:10:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:10:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:10:43,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-19 04:10:43,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:10:43,560 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:10:43,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 04:10:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:10:43,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:10:43,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:10:43,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:10:44,329 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 04:10:44,473 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 04:10:44,608 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-19 04:10:44,839 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-19 04:10:46,351 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-19 04:10:47,051 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-19 04:10:47,587 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259