/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:28:57,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:28:57,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:28:57,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:28:57,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:28:57,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:28:57,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:28:57,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:28:57,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:28:57,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:28:57,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:28:57,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:28:57,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:28:57,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:28:57,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:28:57,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:28:57,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:28:57,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:28:57,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:28:57,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:28:57,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:28:57,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:28:57,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:28:57,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:28:57,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:28:57,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:28:57,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:28:57,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:28:57,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:28:57,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:28:57,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:28:57,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:28:57,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:28:57,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:28:57,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:28:57,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:28:57,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:28:57,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:28:57,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:28:57,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:28:57,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:28:57,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:28:57,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:28:57,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:28:57,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:28:57,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:28:57,965 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:28:57,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:28:57,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:28:57,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:28:57,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:28:57,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:28:57,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:28:57,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:28:57,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:28:57,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:28:57,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:28:57,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:28:57,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:28:57,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:28:57,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:28:57,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:28:57,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:28:57,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:57,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:28:57,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:28:57,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:28:57,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:28:57,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:28:57,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:28:57,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:28:57,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:28:58,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:28:58,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:28:58,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:28:58,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:28:58,331 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:28:58,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-22 00:28:58,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13b0c95fa/3ce18cb22b444667bebce2690bf6b476/FLAG23d8c3fb4 [2020-08-22 00:28:58,859 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:28:58,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-22 00:28:58,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13b0c95fa/3ce18cb22b444667bebce2690bf6b476/FLAG23d8c3fb4 [2020-08-22 00:28:59,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13b0c95fa/3ce18cb22b444667bebce2690bf6b476 [2020-08-22 00:28:59,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:28:59,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:28:59,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:59,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:28:59,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:28:59,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:59" (1/1) ... [2020-08-22 00:28:59,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba0c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:59, skipping insertion in model container [2020-08-22 00:28:59,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:59" (1/1) ... [2020-08-22 00:28:59,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:28:59,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:28:59,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:59,906 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:28:59,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:29:00,026 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:29:00,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00 WrapperNode [2020-08-22 00:29:00,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:29:00,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:29:00,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:29:00,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:29:00,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... [2020-08-22 00:29:00,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:29:00,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:29:00,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:29:00,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:29:00,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:29:00,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:29:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:29:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:29:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:29:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:29:00,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:29:00,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:29:00,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:29:00,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:29:00,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:29:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:29:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:29:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:29:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:29:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:29:00,255 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:29:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:29:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:29:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 00:29:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:29:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:29:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:29:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:29:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:29:00,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:29:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:29:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:29:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:29:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:29:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:29:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:29:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:29:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 00:29:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:29:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:29:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:29:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:29:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:29:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:29:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 00:29:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:29:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:29:00,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:29:00,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:29:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:29:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:29:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:29:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:29:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:29:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:29:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:29:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:29:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:29:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:29:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:29:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:29:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:29:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:29:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:29:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:29:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:29:00,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:29:00,268 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:29:00,268 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:29:00,268 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:29:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:29:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:29:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:29:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:29:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:29:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:29:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:29:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 00:29:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:29:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:29:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:29:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:29:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:29:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:29:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:29:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 00:29:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 00:29:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:29:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:29:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:29:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:29:01,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:29:01,303 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:29:01,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:29:01 BoogieIcfgContainer [2020-08-22 00:29:01,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:29:01,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:29:01,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:29:01,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:29:01,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:28:59" (1/3) ... [2020-08-22 00:29:01,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3ab9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:29:01, skipping insertion in model container [2020-08-22 00:29:01,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:29:00" (2/3) ... [2020-08-22 00:29:01,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3ab9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:29:01, skipping insertion in model container [2020-08-22 00:29:01,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:29:01" (3/3) ... [2020-08-22 00:29:01,318 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-22 00:29:01,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:29:01,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:29:01,352 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:29:01,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:29:01,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:29:01,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:29:01,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:29:01,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:29:01,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:29:01,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:29:01,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:29:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-22 00:29:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:29:01,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:01,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:01,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:01,423 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-22 00:29:01,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:01,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171751633] [2020-08-22 00:29:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,101 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:29:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:29:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:02,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171751633] [2020-08-22 00:29:02,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:02,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:29:02,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714680832] [2020-08-22 00:29:02,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:29:02,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:02,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:29:02,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:29:02,239 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-22 00:29:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:03,432 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-22 00:29:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:29:03,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 00:29:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:03,450 INFO L225 Difference]: With dead ends: 338 [2020-08-22 00:29:03,450 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 00:29:03,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:29:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 00:29:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-22 00:29:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-22 00:29:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-22 00:29:03,550 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-22 00:29:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:03,551 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-22 00:29:03,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:29:03,552 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-22 00:29:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 00:29:03,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:03,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:03,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:29:03,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:03,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:03,556 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-22 00:29:03,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:03,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344614614] [2020-08-22 00:29:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,920 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:29:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:29:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:04,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344614614] [2020-08-22 00:29:04,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:04,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:29:04,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127935114] [2020-08-22 00:29:04,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:29:04,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:04,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:29:04,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:29:04,031 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-22 00:29:04,453 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:05,443 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-22 00:29:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:29:05,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 00:29:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:05,447 INFO L225 Difference]: With dead ends: 267 [2020-08-22 00:29:05,447 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 00:29:05,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:29:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 00:29:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-22 00:29:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 00:29:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-22 00:29:05,492 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-22 00:29:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:05,492 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-22 00:29:05,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:29:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-22 00:29:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:29:05,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:05,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:05,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:29:05,495 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:05,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-22 00:29:05,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:05,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458284014] [2020-08-22 00:29:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,888 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:05,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:29:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:29:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:05,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458284014] [2020-08-22 00:29:05,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:05,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:29:05,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881299587] [2020-08-22 00:29:05,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:29:05,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:05,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:29:05,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:29:05,998 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-22 00:29:06,303 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:06,635 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:06,878 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:07,100 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:08,335 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-22 00:29:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:29:08,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 00:29:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:08,346 INFO L225 Difference]: With dead ends: 280 [2020-08-22 00:29:08,346 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 00:29:08,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 00:29:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-22 00:29:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 00:29:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-22 00:29:08,406 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-22 00:29:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:08,407 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-22 00:29:08,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:29:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-22 00:29:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 00:29:08,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:08,417 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] [2020-08-22 00:29:08,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:29:08,418 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:08,418 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-22 00:29:08,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:08,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819350421] [2020-08-22 00:29:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,717 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 00:29:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 00:29:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:08,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819350421] [2020-08-22 00:29:08,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:08,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:29:08,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141713252] [2020-08-22 00:29:08,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:29:08,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:29:08,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:29:08,825 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-22 00:29:09,145 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:10,326 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:10,926 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-22 00:29:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:29:10,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 00:29:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:10,930 INFO L225 Difference]: With dead ends: 377 [2020-08-22 00:29:10,931 INFO L226 Difference]: Without dead ends: 263 [2020-08-22 00:29:10,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:29:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-22 00:29:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-22 00:29:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 00:29:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-22 00:29:10,988 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-22 00:29:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:10,988 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-22 00:29:10,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:29:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-22 00:29:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 00:29:10,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:10,990 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] [2020-08-22 00:29:10,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:29:10,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-22 00:29:10,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:10,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427582071] [2020-08-22 00:29:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,276 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 00:29:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:29:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:11,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427582071] [2020-08-22 00:29:11,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:11,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 00:29:11,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369414369] [2020-08-22 00:29:11,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:11,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:11,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:11,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:11,441 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-22 00:29:11,876 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:12,104 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:12,320 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:12,935 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:13,194 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:13,426 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:14,490 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-22 00:29:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:29:14,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-22 00:29:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:14,494 INFO L225 Difference]: With dead ends: 460 [2020-08-22 00:29:14,494 INFO L226 Difference]: Without dead ends: 264 [2020-08-22 00:29:14,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:29:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-22 00:29:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-22 00:29:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-22 00:29:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-22 00:29:14,558 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-22 00:29:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:14,558 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-22 00:29:14,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-22 00:29:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 00:29:14,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:14,560 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] [2020-08-22 00:29:14,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:29:14,561 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-22 00:29:14,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:14,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643337214] [2020-08-22 00:29:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,885 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 00:29:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 00:29:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:15,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643337214] [2020-08-22 00:29:15,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:15,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:29:15,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99587034] [2020-08-22 00:29:15,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:15,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:15,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:15,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:15,016 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-22 00:29:15,449 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:15,753 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:16,006 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:16,239 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:16,768 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:17,671 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:17,966 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:18,249 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:18,540 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:18,844 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:19,100 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:20,482 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:20,857 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:21,532 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-22 00:29:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:29:21,533 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-22 00:29:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:21,539 INFO L225 Difference]: With dead ends: 789 [2020-08-22 00:29:21,539 INFO L226 Difference]: Without dead ends: 589 [2020-08-22 00:29:21,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 00:29:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-22 00:29:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-22 00:29:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-22 00:29:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-22 00:29:21,639 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-22 00:29:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:21,640 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-22 00:29:21,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-22 00:29:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 00:29:21,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:21,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 00:29:21,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:29:21,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-22 00:29:21,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:21,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008697745] [2020-08-22 00:29:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,948 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 00:29:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 00:29:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 00:29:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 00:29:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-22 00:29:22,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008697745] [2020-08-22 00:29:22,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:22,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:29:22,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216855984] [2020-08-22 00:29:22,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:29:22,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:22,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:29:22,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:29:22,212 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-22 00:29:22,564 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:23,168 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:23,749 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:24,025 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 00:29:24,293 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:24,535 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:24,796 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:25,071 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 00:29:25,351 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:25,594 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:27,193 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:27,434 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:29:27,685 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:27,920 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:28,443 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-22 00:29:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 00:29:28,443 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-22 00:29:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:28,448 INFO L225 Difference]: With dead ends: 937 [2020-08-22 00:29:28,448 INFO L226 Difference]: Without dead ends: 434 [2020-08-22 00:29:28,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 00:29:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-22 00:29:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-22 00:29:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-22 00:29:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-22 00:29:28,523 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-22 00:29:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:28,523 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-22 00:29:28,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:29:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-22 00:29:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 00:29:28,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:28,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:28,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:29:28,527 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:28,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-22 00:29:28,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:28,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569651933] [2020-08-22 00:29:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,771 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 00:29:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 00:29:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 00:29:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 00:29:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:29:28,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569651933] [2020-08-22 00:29:28,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:28,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:28,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342429509] [2020-08-22 00:29:28,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:28,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:28,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:28,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:28,932 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-22 00:29:30,560 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:30,806 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:31,032 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:31,249 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:31,654 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-22 00:29:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:29:31,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-22 00:29:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:31,660 INFO L225 Difference]: With dead ends: 704 [2020-08-22 00:29:31,660 INFO L226 Difference]: Without dead ends: 411 [2020-08-22 00:29:31,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:29:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-22 00:29:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-22 00:29:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-22 00:29:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-22 00:29:31,748 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-22 00:29:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:31,750 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-22 00:29:31,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-22 00:29:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 00:29:31,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:31,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:31,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:29:31,755 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-22 00:29:31,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:31,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132261475] [2020-08-22 00:29:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,032 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 00:29:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 00:29:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 00:29:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 00:29:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:29:32,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132261475] [2020-08-22 00:29:32,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:32,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:32,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707807304] [2020-08-22 00:29:32,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:32,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:32,200 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-22 00:29:32,542 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:34,192 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:34,446 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:34,671 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:34,893 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:35,174 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:35,592 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-22 00:29:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:29:35,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-22 00:29:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:35,599 INFO L225 Difference]: With dead ends: 418 [2020-08-22 00:29:35,599 INFO L226 Difference]: Without dead ends: 415 [2020-08-22 00:29:35,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:29:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-22 00:29:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-22 00:29:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-22 00:29:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-22 00:29:35,726 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-22 00:29:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:35,726 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-22 00:29:35,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-22 00:29:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 00:29:35,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:35,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:35,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:29:35,730 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-22 00:29:35,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:35,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002076895] [2020-08-22 00:29:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,055 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 00:29:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 00:29:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 00:29:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 00:29:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 00:29:36,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002076895] [2020-08-22 00:29:36,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:36,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:29:36,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395846572] [2020-08-22 00:29:36,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:36,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:36,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:36,325 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-22 00:29:36,787 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:37,386 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:38,218 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:38,488 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:38,721 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:38,967 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:39,242 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:39,488 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:40,810 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:41,577 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-22 00:29:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 00:29:41,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-22 00:29:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:41,582 INFO L225 Difference]: With dead ends: 922 [2020-08-22 00:29:41,582 INFO L226 Difference]: Without dead ends: 624 [2020-08-22 00:29:41,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 00:29:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-22 00:29:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-22 00:29:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-22 00:29:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-22 00:29:41,680 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-22 00:29:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:41,681 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-22 00:29:41,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-22 00:29:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 00:29:41,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:41,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:41,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:29:41,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:41,686 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-22 00:29:41,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:41,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527359318] [2020-08-22 00:29:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:41,973 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:29:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:29:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 00:29:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 00:29:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 00:29:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 00:29:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 00:29:42,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527359318] [2020-08-22 00:29:42,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:42,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:29:42,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136219688] [2020-08-22 00:29:42,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:29:42,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:42,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:29:42,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:29:42,350 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-22 00:29:43,392 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:43,663 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:45,254 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:29:45,492 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:45,731 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:46,148 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-22 00:29:47,699 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-22 00:29:47,989 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 00:29:48,314 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:29:48,576 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:29:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:49,592 INFO L93 Difference]: Finished difference Result 1442 states and 1789 transitions. [2020-08-22 00:29:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 00:29:49,592 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-22 00:29:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:49,599 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 00:29:49,599 INFO L226 Difference]: Without dead ends: 999 [2020-08-22 00:29:49,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 00:29:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-08-22 00:29:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850. [2020-08-22 00:29:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-22 00:29:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-22 00:29:49,803 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207 [2020-08-22 00:29:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:49,803 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-22 00:29:49,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:29:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-22 00:29:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 00:29:49,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:49,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:49,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:29:49,808 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:49,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times [2020-08-22 00:29:49,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:49,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492457892] [2020-08-22 00:29:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,111 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:29:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:29:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 00:29:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 00:29:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 00:29:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 00:29:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-22 00:29:50,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492457892] [2020-08-22 00:29:50,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:50,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:29:50,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798278727] [2020-08-22 00:29:50,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:29:50,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:50,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:29:50,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:29:50,349 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states. [2020-08-22 00:29:50,939 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:51,193 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:51,406 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:52,744 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:52,981 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:53,246 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:53,502 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:53,818 INFO L93 Difference]: Finished difference Result 1133 states and 1322 transitions. [2020-08-22 00:29:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:29:53,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-22 00:29:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:53,819 INFO L225 Difference]: With dead ends: 1133 [2020-08-22 00:29:53,819 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:29:53,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 00:29:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:29:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:29:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:29:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:29:53,827 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-08-22 00:29:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:53,827 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:29:53,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:29:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:29:53,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:29:53,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:29:53,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:29:53,982 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-22 00:29:55,296 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246