/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:36:13,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:36:13,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:36:13,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:36:13,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:36:13,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:36:13,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:36:13,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:36:13,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:36:13,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:36:13,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:36:13,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:36:13,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:36:13,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:36:13,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:36:13,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:36:13,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:36:13,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:36:13,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:36:13,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:36:13,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:36:13,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:36:13,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:36:13,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:36:13,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:36:13,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:36:13,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:36:13,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:36:13,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:36:13,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:36:13,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:36:13,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:36:13,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:36:13,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:36:13,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:36:13,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:36:13,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:36:13,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:36:13,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:36:13,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:36:13,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:36:13,993 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 [2020-08-18 18:36:14,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:36:14,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:36:14,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:36:14,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:36:14,038 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:36:14,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:36:14,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:36:14,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:36:14,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:36:14,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:36:14,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:36:14,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:36:14,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:36:14,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:36:14,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:36:14,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:36:14,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:36:14,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:36:14,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:36:14,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:36:14,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:36:14,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:36:14,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:36:14,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:36:14,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:36:14,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:36:14,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:36:14,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:36:14,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:36:14,045 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:36:14,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:36:14,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:36:14,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:36:14,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:36:14,355 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:36:14,356 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-18 18:36:14,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d051a7e7f/3a5590a2fa4b4fd6878d9547df6efbee/FLAGe8ff75dd5 [2020-08-18 18:36:15,036 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:36:15,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-18 18:36:15,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d051a7e7f/3a5590a2fa4b4fd6878d9547df6efbee/FLAGe8ff75dd5 [2020-08-18 18:36:15,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d051a7e7f/3a5590a2fa4b4fd6878d9547df6efbee [2020-08-18 18:36:15,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:36:15,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:36:15,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:36:15,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:36:15,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:36:15,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:36:15" (1/1) ... [2020-08-18 18:36:15,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f1cfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:15, skipping insertion in model container [2020-08-18 18:36:15,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:36:15" (1/1) ... [2020-08-18 18:36:15,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:36:15,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:36:15,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:36:15,880 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:36:15,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:36:16,030 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:36:16,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16 WrapperNode [2020-08-18 18:36:16,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:36:16,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:36:16,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:36:16,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:36:16,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (1/1) ... [2020-08-18 18:36:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:36:16,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:36:16,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:36:16,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:36:16,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (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 [2020-08-18 18:36:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:36:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:36:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:36:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:36:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:36:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:36:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:36:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:36:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:36:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:36:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:36:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:36:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:36:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:36:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:36:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:36:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:36:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:36:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 18:36:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:36:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:36:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:36:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:36:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:36:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:36:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:36:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:36:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:36:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:36:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:36:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:36:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:36:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:36:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:36:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:36:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:36:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:36:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:36:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:36:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:36:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:36:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:36:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:36:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:36:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:36:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 18:36:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:36:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:36:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:36:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:36:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:36:17,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:36:17,242 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:36:17,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:36:17 BoogieIcfgContainer [2020-08-18 18:36:17,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:36:17,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:36:17,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:36:17,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:36:17,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:36:15" (1/3) ... [2020-08-18 18:36:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde5aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:36:17, skipping insertion in model container [2020-08-18 18:36:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:16" (2/3) ... [2020-08-18 18:36:17,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde5aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:36:17, skipping insertion in model container [2020-08-18 18:36:17,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:36:17" (3/3) ... [2020-08-18 18:36:17,256 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2020-08-18 18:36:17,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:36:17,275 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:36:17,289 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:36:17,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:36:17,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:36:17,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:36:17,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:36:17,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:36:17,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:36:17,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:36:17,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:36:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 18:36:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 18:36:17,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:17,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:17,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:17,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1347369271, now seen corresponding path program 1 times [2020-08-18 18:36:17,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:17,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584798035] [2020-08-18 18:36:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,121 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:18,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:36:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:36:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:18,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584798035] [2020-08-18 18:36:18,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:18,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:36:18,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102632106] [2020-08-18 18:36:18,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:36:18,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:18,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:36:18,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:36:18,318 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 4 states. [2020-08-18 18:36:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:19,313 INFO L93 Difference]: Finished difference Result 325 states and 415 transitions. [2020-08-18 18:36:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:36:19,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 18:36:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:19,333 INFO L225 Difference]: With dead ends: 325 [2020-08-18 18:36:19,333 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 18:36:19,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:36:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 18:36:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-08-18 18:36:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 18:36:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2020-08-18 18:36:19,459 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 59 [2020-08-18 18:36:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:19,460 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2020-08-18 18:36:19,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:36:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2020-08-18 18:36:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 18:36:19,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:19,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:19,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:36:19,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:19,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1814034675, now seen corresponding path program 1 times [2020-08-18 18:36:19,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:19,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263451928] [2020-08-18 18:36:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,860 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:36:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:36:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:36:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:19,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263451928] [2020-08-18 18:36:19,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:19,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:36:19,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919917383] [2020-08-18 18:36:19,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:36:19,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:19,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:36:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:36:19,925 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 5 states. [2020-08-18 18:36:20,407 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:21,396 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2020-08-18 18:36:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:36:21,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 18:36:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:21,403 INFO L225 Difference]: With dead ends: 266 [2020-08-18 18:36:21,404 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 18:36:21,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:36:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 18:36:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-18 18:36:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 18:36:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2020-08-18 18:36:21,497 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 60 [2020-08-18 18:36:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:21,498 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2020-08-18 18:36:21,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:36:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2020-08-18 18:36:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 18:36:21,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:21,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:21,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:36:21,502 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:21,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1518926539, now seen corresponding path program 1 times [2020-08-18 18:36:21,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:21,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450080270] [2020-08-18 18:36:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,858 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:21,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:36:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 18:36:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:21,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450080270] [2020-08-18 18:36:21,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:21,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:21,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218475245] [2020-08-18 18:36:21,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:21,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:21,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:21,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:22,000 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 9 states. [2020-08-18 18:36:22,334 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:22,646 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:22,864 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:23,095 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:24,311 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 18:36:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:36:24,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 18:36:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:24,316 INFO L225 Difference]: With dead ends: 279 [2020-08-18 18:36:24,318 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 18:36:24,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:36:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 18:36:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-18 18:36:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 18:36:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-08-18 18:36:24,363 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 65 [2020-08-18 18:36:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:24,363 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-08-18 18:36:24,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-08-18 18:36:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 18:36:24,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:24,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:24,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:36:24,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:24,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash 793046871, now seen corresponding path program 1 times [2020-08-18 18:36:24,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:24,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144884599] [2020-08-18 18:36:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,686 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:36:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 18:36:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 18:36:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:24,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144884599] [2020-08-18 18:36:24,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:24,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:36:24,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464146456] [2020-08-18 18:36:24,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:36:24,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:24,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:36:24,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:36:24,785 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 7 states. [2020-08-18 18:36:25,185 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:26,693 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:27,236 INFO L93 Difference]: Finished difference Result 391 states and 483 transitions. [2020-08-18 18:36:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:36:27,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 18:36:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:27,240 INFO L225 Difference]: With dead ends: 391 [2020-08-18 18:36:27,241 INFO L226 Difference]: Without dead ends: 281 [2020-08-18 18:36:27,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:36:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-18 18:36:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 235. [2020-08-18 18:36:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 18:36:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2020-08-18 18:36:27,292 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 78 [2020-08-18 18:36:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:27,292 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2020-08-18 18:36:27,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:36:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2020-08-18 18:36:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 18:36:27,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:27,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:27,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:36:27,294 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash -856462191, now seen corresponding path program 1 times [2020-08-18 18:36:27,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:27,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263881820] [2020-08-18 18:36:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,596 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:27,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:36:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 18:36:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:36:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:36:27,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263881820] [2020-08-18 18:36:27,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:27,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:27,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120185958] [2020-08-18 18:36:27,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:27,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:27,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:27,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:27,714 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 9 states. [2020-08-18 18:36:28,123 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:28,779 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:29,646 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:29,919 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:30,348 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:30,583 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:31,172 INFO L93 Difference]: Finished difference Result 487 states and 586 transitions. [2020-08-18 18:36:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:36:31,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 18:36:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:31,176 INFO L225 Difference]: With dead ends: 487 [2020-08-18 18:36:31,176 INFO L226 Difference]: Without dead ends: 280 [2020-08-18 18:36:31,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:36:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-18 18:36:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2020-08-18 18:36:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-18 18:36:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2020-08-18 18:36:31,223 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 92 [2020-08-18 18:36:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:31,223 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2020-08-18 18:36:31,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2020-08-18 18:36:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 18:36:31,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:31,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:31,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:36:31,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:31,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:31,226 INFO L82 PathProgramCache]: Analyzing trace with hash -357754488, now seen corresponding path program 1 times [2020-08-18 18:36:31,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:31,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312521366] [2020-08-18 18:36:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,482 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:36:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 18:36:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:36:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:31,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312521366] [2020-08-18 18:36:31,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:31,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:31,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204512507] [2020-08-18 18:36:31,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:31,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:31,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:31,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:31,618 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand 9 states. [2020-08-18 18:36:32,556 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:32,807 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:33,043 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:33,271 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:33,946 INFO L93 Difference]: Finished difference Result 487 states and 589 transitions. [2020-08-18 18:36:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:36:33,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-18 18:36:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:33,951 INFO L225 Difference]: With dead ends: 487 [2020-08-18 18:36:33,951 INFO L226 Difference]: Without dead ends: 281 [2020-08-18 18:36:33,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:36:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-18 18:36:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2020-08-18 18:36:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 18:36:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2020-08-18 18:36:34,013 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 108 [2020-08-18 18:36:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:34,013 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2020-08-18 18:36:34,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2020-08-18 18:36:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 18:36:34,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:34,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:34,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:36:34,016 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1570518214, now seen corresponding path program 1 times [2020-08-18 18:36:34,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:34,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492965854] [2020-08-18 18:36:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,308 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:34,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:36:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 18:36:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:36:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:34,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492965854] [2020-08-18 18:36:34,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:34,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:36:34,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771037138] [2020-08-18 18:36:34,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:36:34,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:34,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:36:34,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:36:34,460 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand 11 states. [2020-08-18 18:36:35,449 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:35,701 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:35,943 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:36,685 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:36,935 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:37,177 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:38,127 INFO L93 Difference]: Finished difference Result 497 states and 600 transitions. [2020-08-18 18:36:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:36:38,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 18:36:38,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:38,131 INFO L225 Difference]: With dead ends: 497 [2020-08-18 18:36:38,131 INFO L226 Difference]: Without dead ends: 286 [2020-08-18 18:36:38,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:36:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-18 18:36:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2020-08-18 18:36:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-18 18:36:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2020-08-18 18:36:38,174 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 108 [2020-08-18 18:36:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:38,174 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2020-08-18 18:36:38,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:36:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2020-08-18 18:36:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 18:36:38,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:38,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:38,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:36:38,176 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:38,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1329978085, now seen corresponding path program 1 times [2020-08-18 18:36:38,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:38,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289987421] [2020-08-18 18:36:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,424 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:38,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:36:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 18:36:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:36:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:38,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289987421] [2020-08-18 18:36:38,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:38,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:36:38,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370390513] [2020-08-18 18:36:38,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:36:38,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:38,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:36:38,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:36:38,579 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 7 states. [2020-08-18 18:36:38,916 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:39,408 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:41,300 INFO L93 Difference]: Finished difference Result 679 states and 838 transitions. [2020-08-18 18:36:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:36:41,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-18 18:36:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:41,304 INFO L225 Difference]: With dead ends: 679 [2020-08-18 18:36:41,304 INFO L226 Difference]: Without dead ends: 464 [2020-08-18 18:36:41,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:36:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-08-18 18:36:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 422. [2020-08-18 18:36:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-08-18 18:36:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 489 transitions. [2020-08-18 18:36:41,385 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 489 transitions. Word has length 108 [2020-08-18 18:36:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:41,386 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 489 transitions. [2020-08-18 18:36:41,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:36:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 489 transitions. [2020-08-18 18:36:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 18:36:41,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:41,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:41,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:36:41,388 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 825673247, now seen corresponding path program 1 times [2020-08-18 18:36:41,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:41,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89350051] [2020-08-18 18:36:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,732 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:36:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 18:36:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 18:36:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 18:36:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:41,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89350051] [2020-08-18 18:36:41,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:41,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:36:41,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525020778] [2020-08-18 18:36:41,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:36:41,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:41,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:36:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:36:41,922 INFO L87 Difference]: Start difference. First operand 422 states and 489 transitions. Second operand 12 states. [2020-08-18 18:36:42,327 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:42,976 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:44,066 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:44,366 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:44,617 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:44,887 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:45,149 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:46,485 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:46,720 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:47,587 INFO L93 Difference]: Finished difference Result 1174 states and 1444 transitions. [2020-08-18 18:36:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 18:36:47,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-18 18:36:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:47,593 INFO L225 Difference]: With dead ends: 1174 [2020-08-18 18:36:47,594 INFO L226 Difference]: Without dead ends: 854 [2020-08-18 18:36:47,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 18:36:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-18 18:36:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 732. [2020-08-18 18:36:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-18 18:36:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 840 transitions. [2020-08-18 18:36:47,779 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 840 transitions. Word has length 112 [2020-08-18 18:36:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:47,780 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 840 transitions. [2020-08-18 18:36:47,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:36:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 840 transitions. [2020-08-18 18:36:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-18 18:36:47,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:47,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:47,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:36:47,785 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:47,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1258980138, now seen corresponding path program 1 times [2020-08-18 18:36:47,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:47,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892896062] [2020-08-18 18:36:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,142 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:36:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:36:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:36:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 18:36:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 18:36:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 18:36:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:36:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 18:36:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 18:36:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-18 18:36:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892896062] [2020-08-18 18:36:48,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:36:48,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 18:36:48,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834370851] [2020-08-18 18:36:48,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:36:48,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:48,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:36:48,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:36:48,563 INFO L87 Difference]: Start difference. First operand 732 states and 840 transitions. Second operand 16 states. [2020-08-18 18:36:49,740 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:50,100 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 18:36:50,386 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:36:50,666 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:36:51,366 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:51,638 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:52,483 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:53,157 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:53,654 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:54,084 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:54,337 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:54,631 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:55,167 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:55,563 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:55,941 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:56,686 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:56,966 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:57,714 INFO L93 Difference]: Finished difference Result 1607 states and 1899 transitions. [2020-08-18 18:36:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 18:36:57,715 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-18 18:36:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:57,722 INFO L225 Difference]: With dead ends: 1607 [2020-08-18 18:36:57,722 INFO L226 Difference]: Without dead ends: 973 [2020-08-18 18:36:57,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 18:36:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-08-18 18:36:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 880. [2020-08-18 18:36:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-08-18 18:36:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1018 transitions. [2020-08-18 18:36:57,892 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1018 transitions. Word has length 172 [2020-08-18 18:36:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:57,896 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1018 transitions. [2020-08-18 18:36:57,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:36:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1018 transitions. [2020-08-18 18:36:57,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-18 18:36:57,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:57,905 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 18:36:57,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:36:57,905 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:57,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1319050440, now seen corresponding path program 1 times [2020-08-18 18:36:57,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:57,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926275572] [2020-08-18 18:36:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,220 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:36:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:36:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:36:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 18:36:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:36:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:36:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-18 18:36:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:36:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:36:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 18:36:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 18:36:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 18:36:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 18:36:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-08-18 18:36:58,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926275572] [2020-08-18 18:36:58,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:36:58,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:36:58,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187136132] [2020-08-18 18:36:58,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:36:58,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:58,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:36:58,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:36:58,787 INFO L87 Difference]: Start difference. First operand 880 states and 1018 transitions. Second operand 15 states. [2020-08-18 18:37:00,269 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:00,555 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:00,803 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:01,052 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:02,399 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:03,573 INFO L93 Difference]: Finished difference Result 2336 states and 2809 transitions. [2020-08-18 18:37:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 18:37:03,573 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-18 18:37:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:03,582 INFO L225 Difference]: With dead ends: 2336 [2020-08-18 18:37:03,583 INFO L226 Difference]: Without dead ends: 1389 [2020-08-18 18:37:03,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 18:37:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-18 18:37:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1170. [2020-08-18 18:37:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-08-18 18:37:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1383 transitions. [2020-08-18 18:37:03,792 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1383 transitions. Word has length 303 [2020-08-18 18:37:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:03,793 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1383 transitions. [2020-08-18 18:37:03,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 18:37:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1383 transitions. [2020-08-18 18:37:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-18 18:37:03,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:03,800 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 18:37:03,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:37:03,801 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:03,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1689540467, now seen corresponding path program 1 times [2020-08-18 18:37:03,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:03,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523060899] [2020-08-18 18:37:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,089 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:37:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:37:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 18:37:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:37:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:37:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 18:37:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:37:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:37:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 18:37:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-18 18:37:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 18:37:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-18 18:37:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 90 proven. 38 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-08-18 18:37:04,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523060899] [2020-08-18 18:37:04,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:04,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 18:37:04,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913171037] [2020-08-18 18:37:04,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:37:04,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:04,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:37:04,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:37:04,490 INFO L87 Difference]: Start difference. First operand 1170 states and 1383 transitions. Second operand 16 states. [2020-08-18 18:37:04,949 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:05,298 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 18:37:05,588 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:05,844 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:06,545 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:07,443 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:07,726 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:08,250 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:08,929 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:09,752 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:10,015 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:10,722 INFO L93 Difference]: Finished difference Result 2221 states and 2663 transitions. [2020-08-18 18:37:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 18:37:10,723 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 309 [2020-08-18 18:37:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:10,731 INFO L225 Difference]: With dead ends: 2221 [2020-08-18 18:37:10,732 INFO L226 Difference]: Without dead ends: 1172 [2020-08-18 18:37:10,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 18:37:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-18 18:37:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1122. [2020-08-18 18:37:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-08-18 18:37:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1309 transitions. [2020-08-18 18:37:10,972 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1309 transitions. Word has length 309 [2020-08-18 18:37:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:10,972 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1309 transitions. [2020-08-18 18:37:10,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:37:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1309 transitions. [2020-08-18 18:37:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-18 18:37:10,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:10,980 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 18:37:10,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:37:10,980 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1187991886, now seen corresponding path program 1 times [2020-08-18 18:37:10,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:10,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126780744] [2020-08-18 18:37:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,290 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:37:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:37:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 18:37:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:37:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:37:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-18 18:37:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:37:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:37:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-18 18:37:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 18:37:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 18:37:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 18:37:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 18:37:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 84 proven. 7 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-08-18 18:37:11,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126780744] [2020-08-18 18:37:11,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:11,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 18:37:11,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970829125] [2020-08-18 18:37:11,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 18:37:11,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:11,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 18:37:11,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:37:11,722 INFO L87 Difference]: Start difference. First operand 1122 states and 1309 transitions. Second operand 14 states. [2020-08-18 18:37:12,205 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:13,062 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:14,203 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:14,558 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:14,843 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192