/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:50:22,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:50:22,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:50:22,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:50:22,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:50:22,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:50:22,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:50:22,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:50:22,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:50:22,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:50:22,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:50:22,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:50:22,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:50:22,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:50:22,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:50:22,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:50:22,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:50:22,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:50:22,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:50:22,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:50:22,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:50:22,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:50:22,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:50:22,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:50:22,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:50:22,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:50:22,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:50:22,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:50:22,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:50:22,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:50:22,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:50:22,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:50:22,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:50:22,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:50:22,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:50:22,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:50:22,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:50:22,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:50:22,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:50:22,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:50:22,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:50:23,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:50:23,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:50:23,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:50:23,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:50:23,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:50:23,046 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:50:23,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:50:23,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:50:23,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:50:23,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:50:23,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:50:23,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:50:23,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:50:23,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:50:23,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:50:23,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:50:23,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:50:23,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:50:23,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:50:23,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:50:23,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:50:23,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:50:23,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:50:23,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:50:23,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:50:23,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:50:23,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:50:23,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:50:23,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:50:23,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:50:23,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:50:23,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:50:23,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:50:23,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:50:23,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:50:23,382 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:50:23,383 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-19 01:50:23,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78f9f3e2f/92791ad41bef4697925fb3b8151a4cae/FLAGbc9639852 [2020-08-19 01:50:23,969 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:50:23,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-19 01:50:23,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78f9f3e2f/92791ad41bef4697925fb3b8151a4cae/FLAGbc9639852 [2020-08-19 01:50:24,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78f9f3e2f/92791ad41bef4697925fb3b8151a4cae [2020-08-19 01:50:24,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:50:24,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:50:24,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:50:24,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:50:24,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:50:24,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:24,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24, skipping insertion in model container [2020-08-19 01:50:24,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:24,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:50:24,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:50:24,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:50:24,881 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:50:24,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:50:24,995 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:50:24,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24 WrapperNode [2020-08-19 01:50:24,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:50:24,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:50:24,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:50:24,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:50:25,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... [2020-08-19 01:50:25,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:50:25,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:50:25,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:50:25,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:50:25,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:50:25,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:50:25,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:50:25,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:50:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:50:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:50:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:50:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:50:25,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:50:25,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:50:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:50:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:50:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:50:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:50:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:50:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:50:25,159 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:50:25,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:50:25,160 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:50:25,160 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:50:25,160 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:50:25,161 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:50:25,161 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:50:25,161 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:50:25,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:50:25,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:50:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:50:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:50:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:50:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:50:25,164 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:50:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:50:25,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:50:25,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:50:25,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:50:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:50:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:50:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:50:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:50:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:50:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:50:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:50:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:50:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:50:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:50:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:50:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:50:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:50:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:50:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:50:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:50:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:50:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:50:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:50:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:50:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:50:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:50:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:50:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:50:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:50:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:50:26,206 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:50:26,206 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:50:26,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:50:26 BoogieIcfgContainer [2020-08-19 01:50:26,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:50:26,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:50:26,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:50:26,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:50:26,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:50:24" (1/3) ... [2020-08-19 01:50:26,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6ee0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:50:26, skipping insertion in model container [2020-08-19 01:50:26,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:24" (2/3) ... [2020-08-19 01:50:26,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6ee0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:50:26, skipping insertion in model container [2020-08-19 01:50:26,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:50:26" (3/3) ... [2020-08-19 01:50:26,219 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-08-19 01:50:26,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:50:26,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:50:26,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:50:26,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:50:26,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:50:26,270 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:50:26,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:50:26,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:50:26,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:50:26,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:50:26,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:50:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-19 01:50:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:50:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:26,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:26,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:26,320 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2020-08-19 01:50:26,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:26,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184502325] [2020-08-19 01:50:26,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:26,967 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:26,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:50:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:50:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:27,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184502325] [2020-08-19 01:50:27,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:27,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:50:27,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054273403] [2020-08-19 01:50:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:50:27,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:27,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:50:27,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:50:27,148 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-08-19 01:50:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:28,245 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-19 01:50:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:50:28,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:50:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:28,261 INFO L225 Difference]: With dead ends: 297 [2020-08-19 01:50:28,261 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 01:50:28,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:50:28,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 01:50:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-19 01:50:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 01:50:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-19 01:50:28,356 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-19 01:50:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:28,357 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-19 01:50:28,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:50:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-19 01:50:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:50:28,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:28,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:28,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:50:28,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:28,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2020-08-19 01:50:28,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:28,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045923466] [2020-08-19 01:50:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,679 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:50:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:28,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045923466] [2020-08-19 01:50:28,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:28,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:50:28,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512459092] [2020-08-19 01:50:28,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:50:28,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:28,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:50:28,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:50:28,721 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-19 01:50:29,159 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:29,913 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-19 01:50:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:50:29,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:50:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:29,918 INFO L225 Difference]: With dead ends: 230 [2020-08-19 01:50:29,918 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 01:50:29,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:50:29,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 01:50:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 01:50:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 01:50:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 01:50:29,956 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-19 01:50:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:29,956 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 01:50:29,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:50:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 01:50:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:50:29,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:29,959 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] [2020-08-19 01:50:29,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:50:29,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:29,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:29,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2020-08-19 01:50:29,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:29,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374898836] [2020-08-19 01:50:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,260 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:50:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:30,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374898836] [2020-08-19 01:50:30,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:30,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:50:30,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080361309] [2020-08-19 01:50:30,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:50:30,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:30,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:50:30,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:50:30,397 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-19 01:50:30,807 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:31,112 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:31,379 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:31,638 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:32,699 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-19 01:50:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:50:32,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 01:50:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:32,703 INFO L225 Difference]: With dead ends: 239 [2020-08-19 01:50:32,703 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 01:50:32,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 01:50:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 01:50:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 01:50:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-19 01:50:32,740 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-19 01:50:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:32,740 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-19 01:50:32,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:50:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-19 01:50:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 01:50:32,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:32,743 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] [2020-08-19 01:50:32,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:50:32,743 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2020-08-19 01:50:32,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:32,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114755600] [2020-08-19 01:50:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,997 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:50:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:50:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:50:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:33,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114755600] [2020-08-19 01:50:33,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:33,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:50:33,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107109586] [2020-08-19 01:50:33,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:50:33,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:33,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:50:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:50:33,124 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-19 01:50:33,448 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:34,546 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:35,195 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-19 01:50:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:50:35,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 01:50:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:35,200 INFO L225 Difference]: With dead ends: 331 [2020-08-19 01:50:35,200 INFO L226 Difference]: Without dead ends: 236 [2020-08-19 01:50:35,201 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 [2020-08-19 01:50:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-19 01:50:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-19 01:50:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-19 01:50:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-19 01:50:35,249 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-19 01:50:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:35,249 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-19 01:50:35,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:50:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-19 01:50:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:50:35,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:35,251 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] [2020-08-19 01:50:35,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:50:35,252 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2020-08-19 01:50:35,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:35,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618280838] [2020-08-19 01:50:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,574 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:35,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:50:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 01:50:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:50:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:35,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618280838] [2020-08-19 01:50:35,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:35,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:50:35,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581081398] [2020-08-19 01:50:35,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:35,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:35,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:35,682 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2020-08-19 01:50:36,121 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:36,486 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:36,745 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:36,989 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:37,501 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:38,312 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:38,599 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:38,848 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:39,102 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:39,430 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:39,696 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:40,959 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:41,290 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:41,852 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2020-08-19 01:50:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:50:41,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-19 01:50:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:41,858 INFO L225 Difference]: With dead ends: 677 [2020-08-19 01:50:41,859 INFO L226 Difference]: Without dead ends: 506 [2020-08-19 01:50:41,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:50:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-19 01:50:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2020-08-19 01:50:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-19 01:50:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2020-08-19 01:50:41,960 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2020-08-19 01:50:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:41,960 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2020-08-19 01:50:41,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2020-08-19 01:50:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 01:50:41,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:41,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:50:41,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2020-08-19 01:50:41,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:41,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383197143] [2020-08-19 01:50:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,304 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:42,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:50:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:50:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:50:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:50:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 01:50:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:50:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 01:50:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 01:50:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 01:50:42,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383197143] [2020-08-19 01:50:42,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:42,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:50:42,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493865508] [2020-08-19 01:50:42,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:50:42,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:42,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:50:42,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:50:42,669 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 13 states. [2020-08-19 01:50:43,146 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:43,762 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:44,258 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:44,529 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:50:44,838 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:45,078 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:45,306 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:45,566 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:50:45,857 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:46,118 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:47,663 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:47,884 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:48,112 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:48,364 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:48,888 INFO L93 Difference]: Finished difference Result 904 states and 1154 transitions. [2020-08-19 01:50:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 01:50:48,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-19 01:50:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:48,895 INFO L225 Difference]: With dead ends: 904 [2020-08-19 01:50:48,895 INFO L226 Difference]: Without dead ends: 480 [2020-08-19 01:50:48,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 01:50:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-08-19 01:50:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2020-08-19 01:50:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-19 01:50:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 497 transitions. [2020-08-19 01:50:48,983 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 497 transitions. Word has length 136 [2020-08-19 01:50:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:48,984 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 497 transitions. [2020-08-19 01:50:48,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:50:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 497 transitions. [2020-08-19 01:50:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 01:50:48,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:48,987 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] [2020-08-19 01:50:48,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:50:48,988 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2020-08-19 01:50:48,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:48,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365938300] [2020-08-19 01:50:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,264 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:50:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:50:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 01:50:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 01:50:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:50:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:50:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 01:50:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:50:49,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365938300] [2020-08-19 01:50:49,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:49,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:50:49,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668220691] [2020-08-19 01:50:49,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:49,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:49,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:49,448 INFO L87 Difference]: Start difference. First operand 418 states and 497 transitions. Second operand 12 states. [2020-08-19 01:50:49,927 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:50,162 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:50,409 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:50,954 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:51,199 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:51,433 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:52,301 INFO L93 Difference]: Finished difference Result 761 states and 937 transitions. [2020-08-19 01:50:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:50:52,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 01:50:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:52,307 INFO L225 Difference]: With dead ends: 761 [2020-08-19 01:50:52,307 INFO L226 Difference]: Without dead ends: 367 [2020-08-19 01:50:52,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:50:52,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-19 01:50:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2020-08-19 01:50:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-19 01:50:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2020-08-19 01:50:52,396 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 128 [2020-08-19 01:50:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:52,397 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2020-08-19 01:50:52,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2020-08-19 01:50:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 01:50:52,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:52,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:52,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:50:52,400 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2020-08-19 01:50:52,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:52,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76038965] [2020-08-19 01:50:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,657 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:50:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:50:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:50:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 01:50:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:50:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 01:50:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:50:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 01:50:52,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76038965] [2020-08-19 01:50:52,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:52,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:50:52,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350622686] [2020-08-19 01:50:52,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:50:52,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:52,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:50:52,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:50:52,833 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand 10 states. [2020-08-19 01:50:54,075 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:54,309 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:50:54,555 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:54,814 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:55,153 INFO L93 Difference]: Finished difference Result 632 states and 772 transitions. [2020-08-19 01:50:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:50:55,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 01:50:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:55,157 INFO L225 Difference]: With dead ends: 632 [2020-08-19 01:50:55,157 INFO L226 Difference]: Without dead ends: 372 [2020-08-19 01:50:55,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:50:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-19 01:50:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2020-08-19 01:50:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-19 01:50:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2020-08-19 01:50:55,266 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 132 [2020-08-19 01:50:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:55,267 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2020-08-19 01:50:55,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:50:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2020-08-19 01:50:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 01:50:55,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:55,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:55,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:50:55,274 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:55,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:55,274 INFO L82 PathProgramCache]: Analyzing trace with hash 249805299, now seen corresponding path program 1 times [2020-08-19 01:50:55,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:55,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204663750] [2020-08-19 01:50:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,703 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:50:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:50:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:50:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 01:50:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:50:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 01:50:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:50:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 01:50:55,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204663750] [2020-08-19 01:50:55,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:55,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:50:55,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640939434] [2020-08-19 01:50:55,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:50:55,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:55,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:50:55,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:50:55,859 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand 10 states. [2020-08-19 01:50:56,322 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:57,907 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:58,143 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:58,368 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:58,594 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:58,848 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:59,099 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2020-08-19 01:50:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:50:59,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 01:50:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:59,103 INFO L225 Difference]: With dead ends: 379 [2020-08-19 01:50:59,103 INFO L226 Difference]: Without dead ends: 376 [2020-08-19 01:50:59,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:50:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-19 01:50:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2020-08-19 01:50:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-19 01:50:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 409 transitions. [2020-08-19 01:50:59,162 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 409 transitions. Word has length 132 [2020-08-19 01:50:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:59,162 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 409 transitions. [2020-08-19 01:50:59,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:50:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 409 transitions. [2020-08-19 01:50:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 01:50:59,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:59,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:59,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:50:59,165 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1295460868, now seen corresponding path program 1 times [2020-08-19 01:50:59,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:59,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122799788] [2020-08-19 01:50:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,491 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:50:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:50:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:50:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 01:50:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:50:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 01:50:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 01:50:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 01:50:59,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122799788] [2020-08-19 01:50:59,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:59,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:50:59,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564986920] [2020-08-19 01:50:59,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:59,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:59,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:59,659 INFO L87 Difference]: Start difference. First operand 348 states and 409 transitions. Second operand 12 states. [2020-08-19 01:51:00,154 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:00,734 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:01,473 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:01,757 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:02,025 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:02,275 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:51:02,554 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:02,810 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:03,905 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:04,666 INFO L93 Difference]: Finished difference Result 832 states and 1064 transitions. [2020-08-19 01:51:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 01:51:04,667 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-19 01:51:04,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:04,671 INFO L225 Difference]: With dead ends: 832 [2020-08-19 01:51:04,671 INFO L226 Difference]: Without dead ends: 567 [2020-08-19 01:51:04,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:51:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-08-19 01:51:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 483. [2020-08-19 01:51:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-08-19 01:51:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 575 transitions. [2020-08-19 01:51:04,763 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 575 transitions. Word has length 136 [2020-08-19 01:51:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:04,764 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 575 transitions. [2020-08-19 01:51:04,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:51:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 575 transitions. [2020-08-19 01:51:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-19 01:51:04,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:04,767 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:51:04,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:51:04,768 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:04,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1491934830, now seen corresponding path program 2 times [2020-08-19 01:51:04,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:04,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906939185] [2020-08-19 01:51:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,105 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:51:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:51:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:51:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:51:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:51:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:51:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:51:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 01:51:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:51:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-19 01:51:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 01:51:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 01:51:05,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906939185] [2020-08-19 01:51:05,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:05,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:51:05,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769625622] [2020-08-19 01:51:05,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:51:05,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:05,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:51:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:51:05,447 INFO L87 Difference]: Start difference. First operand 483 states and 575 transitions. Second operand 13 states. [2020-08-19 01:51:06,506 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:06,781 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:51:08,334 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:51:08,594 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:08,842 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:09,295 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 01:51:10,773 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 01:51:11,031 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:51:11,322 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:51:11,576 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:51:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:12,459 INFO L93 Difference]: Finished difference Result 1322 states and 1661 transitions. [2020-08-19 01:51:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 01:51:12,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-19 01:51:12,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:12,465 INFO L225 Difference]: With dead ends: 1322 [2020-08-19 01:51:12,465 INFO L226 Difference]: Without dead ends: 920 [2020-08-19 01:51:12,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:51:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-08-19 01:51:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-08-19 01:51:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-19 01:51:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 924 transitions. [2020-08-19 01:51:12,652 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 924 transitions. Word has length 189 [2020-08-19 01:51:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:12,653 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 924 transitions. [2020-08-19 01:51:12,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:51:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 924 transitions. [2020-08-19 01:51:12,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-19 01:51:12,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:51:12,660 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, 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] [2020-08-19 01:51:12,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:51:12,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:51:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:51:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash 384547988, now seen corresponding path program 1 times [2020-08-19 01:51:12,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:51:12,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319955876] [2020-08-19 01:51:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:51:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:12,978 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:51:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:51:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:51:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:51:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:51:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:51:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:51:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:51:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:51:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:51:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:51:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:51:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:51:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:51:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 01:51:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:51:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:51:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:51:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-19 01:51:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 01:51:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:51:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-19 01:51:13,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319955876] [2020-08-19 01:51:13,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:51:13,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:51:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048771352] [2020-08-19 01:51:13,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:51:13,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:51:13,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:51:13,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:51:13,258 INFO L87 Difference]: Start difference. First operand 789 states and 924 transitions. Second operand 13 states. [2020-08-19 01:51:14,344 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:14,654 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:14,871 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:16,108 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:16,344 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:51:16,603 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:16,832 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:51:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:51:17,119 INFO L93 Difference]: Finished difference Result 1041 states and 1226 transitions. [2020-08-19 01:51:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:51:17,120 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-19 01:51:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:51:17,121 INFO L225 Difference]: With dead ends: 1041 [2020-08-19 01:51:17,121 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:51:17,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:51:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:51:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:51:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:51:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:51:17,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2020-08-19 01:51:17,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:51:17,125 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:51:17,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:51:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:51:17,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:51:17,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:51:17,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:51:18,569 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 246 [2020-08-19 01:51:19,863 WARN L193 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 248