/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:06:38,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:06:38,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:06:38,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:06:38,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:06:38,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:06:38,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:06:38,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:06:38,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:06:38,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:06:38,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:06:38,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:06:38,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:06:38,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:06:38,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:06:38,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:06:38,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:06:38,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:06:38,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:06:38,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:06:38,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:06:38,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:06:38,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:06:38,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:06:38,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:06:38,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:06:38,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:06:38,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:06:38,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:06:38,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:06:38,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:06:38,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:06:38,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:06:38,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:06:38,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:06:38,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:06:38,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:06:38,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:06:38,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:06:38,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:06:38,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:06:38,959 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 20:06:38,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:06:38,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:06:38,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:06:38,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:06:38,990 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:06:38,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:06:38,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:06:38,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:06:38,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:06:38,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:06:38,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:06:38,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:06:38,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:06:38,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:06:38,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:06:38,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:06:38,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:06:38,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:06:38,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:06:38,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:06:38,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:06:38,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:06:38,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:06:38,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:06:38,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:06:38,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:06:38,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:06:38,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:06:38,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:06:38,998 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:06:39,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:06:39,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:06:39,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:06:39,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:06:39,330 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:06:39,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2020-08-18 20:06:39,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/715a96cba/6e203af79e0b42b0a2747454bb767b14/FLAGf7412a5da [2020-08-18 20:06:39,900 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:06:39,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2020-08-18 20:06:39,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/715a96cba/6e203af79e0b42b0a2747454bb767b14/FLAGf7412a5da [2020-08-18 20:06:40,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/715a96cba/6e203af79e0b42b0a2747454bb767b14 [2020-08-18 20:06:40,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:06:40,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:06:40,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:06:40,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:06:40,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:06:40,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:40,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186d1561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40, skipping insertion in model container [2020-08-18 20:06:40,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:40,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:06:40,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:06:40,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:06:40,685 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:06:40,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:06:40,923 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:06:40,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40 WrapperNode [2020-08-18 20:06:40,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:06:40,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:06:40,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:06:40,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:06:40,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:40,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:40,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:40,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:41,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:41,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:41,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (1/1) ... [2020-08-18 20:06:41,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:06:41,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:06:41,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:06:41,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:06:41,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (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 20:06:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:06:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:06:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:06:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:06:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:06:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:06:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:06:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:06:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:06:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:06:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:06:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:06:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:06:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:06:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:06:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:06:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:06:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:06:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:06:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:06:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:06:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:06:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:06:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:06:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:06:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:06:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:06:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:06:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:06:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:06:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:06:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:06:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:06:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:06:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:06:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:06:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:06:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:06:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:06:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:06:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:06:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:06:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:06:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:06:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:06:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:06:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:06:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:06:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:06:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:06:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:06:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:06:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:06:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:06:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:06:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:06:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:06:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:06:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:06:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:06:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:06:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:06:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:06:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:06:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:06:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:06:42,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:06:42,221 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:06:42,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:06:42 BoogieIcfgContainer [2020-08-18 20:06:42,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:06:42,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:06:42,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:06:42,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:06:42,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:06:40" (1/3) ... [2020-08-18 20:06:42,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a06fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:06:42, skipping insertion in model container [2020-08-18 20:06:42,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:40" (2/3) ... [2020-08-18 20:06:42,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a06fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:06:42, skipping insertion in model container [2020-08-18 20:06:42,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:06:42" (3/3) ... [2020-08-18 20:06:42,235 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2020-08-18 20:06:42,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:06:42,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:06:42,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:06:42,295 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:06:42,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:06:42,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:06:42,296 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:06:42,296 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:06:42,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:06:42,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:06:42,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:06:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-18 20:06:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:06:42,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:42,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:42,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash -154299971, now seen corresponding path program 1 times [2020-08-18 20:06:42,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:42,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464932421] [2020-08-18 20:06:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,021 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:06:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:06:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:43,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464932421] [2020-08-18 20:06:43,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:43,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:06:43,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116303041] [2020-08-18 20:06:43,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:06:43,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:43,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:06:43,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:06:43,190 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-18 20:06:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:44,328 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-18 20:06:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:06:44,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:06:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:44,345 INFO L225 Difference]: With dead ends: 296 [2020-08-18 20:06:44,345 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 20:06:44,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 20:06:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 20:06:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 133. [2020-08-18 20:06:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 20:06:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-18 20:06:44,453 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 51 [2020-08-18 20:06:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:44,453 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-18 20:06:44,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:06:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-18 20:06:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:06:44,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:44,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:44,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:06:44,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:44,463 INFO L82 PathProgramCache]: Analyzing trace with hash 401693438, now seen corresponding path program 1 times [2020-08-18 20:06:44,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:44,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540966444] [2020-08-18 20:06:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,874 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:44,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:06:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:44,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540966444] [2020-08-18 20:06:44,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:44,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:06:44,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14833982] [2020-08-18 20:06:44,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:06:44,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:44,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:06:44,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:06:44,951 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 5 states. [2020-08-18 20:06:45,375 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:46,181 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2020-08-18 20:06:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:06:46,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:06:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:46,185 INFO L225 Difference]: With dead ends: 241 [2020-08-18 20:06:46,185 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 20:06:46,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:06:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 20:06:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-08-18 20:06:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 20:06:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-18 20:06:46,228 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-18 20:06:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:46,228 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-18 20:06:46,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:06:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-18 20:06:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 20:06:46,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:46,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:46,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:06:46,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1332267464, now seen corresponding path program 1 times [2020-08-18 20:06:46,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:46,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101822010] [2020-08-18 20:06:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,541 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:06:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:06:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:46,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101822010] [2020-08-18 20:06:46,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:46,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:06:46,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788812643] [2020-08-18 20:06:46,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:06:46,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:06:46,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:06:46,665 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 9 states. [2020-08-18 20:06:47,043 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:47,357 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:47,602 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:47,852 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:49,021 INFO L93 Difference]: Finished difference Result 250 states and 311 transitions. [2020-08-18 20:06:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:06:49,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 20:06:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:49,025 INFO L225 Difference]: With dead ends: 250 [2020-08-18 20:06:49,025 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 20:06:49,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 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 20:06:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 20:06:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-08-18 20:06:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 20:06:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-18 20:06:49,060 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 56 [2020-08-18 20:06:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:49,060 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-18 20:06:49,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:06:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-18 20:06:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 20:06:49,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:49,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:49,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:06:49,063 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash -877153324, now seen corresponding path program 1 times [2020-08-18 20:06:49,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:49,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149925162] [2020-08-18 20:06:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,324 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:06:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:06:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:06:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:49,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149925162] [2020-08-18 20:06:49,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:49,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:06:49,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292383545] [2020-08-18 20:06:49,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:06:49,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:49,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:06:49,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:06:49,432 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 7 states. [2020-08-18 20:06:49,798 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:51,009 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:51,670 INFO L93 Difference]: Finished difference Result 344 states and 433 transitions. [2020-08-18 20:06:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:06:51,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-18 20:06:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:51,677 INFO L225 Difference]: With dead ends: 344 [2020-08-18 20:06:51,677 INFO L226 Difference]: Without dead ends: 248 [2020-08-18 20:06:51,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:06:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-18 20:06:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2020-08-18 20:06:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 20:06:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-18 20:06:51,748 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 69 [2020-08-18 20:06:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:51,748 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-18 20:06:51,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:06:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-18 20:06:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:06:51,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:51,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:51,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:06:51,751 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1061705923, now seen corresponding path program 1 times [2020-08-18 20:06:51,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:51,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341956951] [2020-08-18 20:06:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,058 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:06:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:06:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:06:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:52,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341956951] [2020-08-18 20:06:52,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:52,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:06:52,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562160780] [2020-08-18 20:06:52,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:06:52,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:52,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:06:52,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:06:52,202 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 9 states. [2020-08-18 20:06:52,552 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:53,745 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:54,026 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:54,284 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:54,513 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:55,445 INFO L93 Difference]: Finished difference Result 597 states and 752 transitions. [2020-08-18 20:06:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:06:55,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 20:06:55,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:55,450 INFO L225 Difference]: With dead ends: 597 [2020-08-18 20:06:55,451 INFO L226 Difference]: Without dead ends: 423 [2020-08-18 20:06:55,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:06:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-18 20:06:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 352. [2020-08-18 20:06:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-18 20:06:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 404 transitions. [2020-08-18 20:06:55,542 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 404 transitions. Word has length 83 [2020-08-18 20:06:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:55,543 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 404 transitions. [2020-08-18 20:06:55,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:06:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 404 transitions. [2020-08-18 20:06:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 20:06:55,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:55,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:55,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:06:55,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:55,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1506381919, now seen corresponding path program 1 times [2020-08-18 20:06:55,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:55,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636888224] [2020-08-18 20:06:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,863 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:06:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:06:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:06:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:56,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636888224] [2020-08-18 20:06:56,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:56,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:06:56,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267906522] [2020-08-18 20:06:56,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:06:56,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:56,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:06:56,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:06:56,006 INFO L87 Difference]: Start difference. First operand 352 states and 404 transitions. Second operand 10 states. [2020-08-18 20:06:56,452 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:57,550 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:57,769 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:58,015 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:58,292 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:59,417 INFO L93 Difference]: Finished difference Result 782 states and 967 transitions. [2020-08-18 20:06:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:06:59,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-18 20:06:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:59,422 INFO L225 Difference]: With dead ends: 782 [2020-08-18 20:06:59,423 INFO L226 Difference]: Without dead ends: 458 [2020-08-18 20:06:59,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:06:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-08-18 20:06:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 351. [2020-08-18 20:06:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 20:06:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-18 20:06:59,495 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 87 [2020-08-18 20:06:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:59,496 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-18 20:06:59,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:06:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-18 20:06:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:06:59,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:59,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:59,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:06:59,498 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1049604760, now seen corresponding path program 1 times [2020-08-18 20:06:59,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:59,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743984801] [2020-08-18 20:06:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,741 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:59,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:06:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:06:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:06:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:59,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743984801] [2020-08-18 20:06:59,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:59,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:06:59,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600072523] [2020-08-18 20:06:59,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:06:59,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:59,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:06:59,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:06:59,955 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 10 states. [2020-08-18 20:07:01,121 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:01,397 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:07:01,650 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:01,899 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:02,805 INFO L93 Difference]: Finished difference Result 785 states and 976 transitions. [2020-08-18 20:07:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:07:02,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 20:07:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:02,812 INFO L225 Difference]: With dead ends: 785 [2020-08-18 20:07:02,812 INFO L226 Difference]: Without dead ends: 462 [2020-08-18 20:07:02,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:07:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-18 20:07:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 361. [2020-08-18 20:07:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 20:07:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 411 transitions. [2020-08-18 20:07:02,876 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 411 transitions. Word has length 88 [2020-08-18 20:07:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:02,877 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 411 transitions. [2020-08-18 20:07:02,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:07:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 411 transitions. [2020-08-18 20:07:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:07:02,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:02,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:02,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:07:02,879 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:02,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1751204634, now seen corresponding path program 1 times [2020-08-18 20:07:02,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:02,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149667161] [2020-08-18 20:07:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,162 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:07:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:07:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:07:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:07:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:03,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149667161] [2020-08-18 20:07:03,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:03,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:07:03,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085123138] [2020-08-18 20:07:03,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:07:03,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:07:03,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:07:03,350 INFO L87 Difference]: Start difference. First operand 361 states and 411 transitions. Second operand 12 states. [2020-08-18 20:07:03,880 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:04,121 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:04,354 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:05,012 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:05,278 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:05,524 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:06,703 INFO L93 Difference]: Finished difference Result 809 states and 1018 transitions. [2020-08-18 20:07:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:07:06,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-18 20:07:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:06,708 INFO L225 Difference]: With dead ends: 809 [2020-08-18 20:07:06,708 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 20:07:06,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:07:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 20:07:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-18 20:07:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 20:07:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 419 transitions. [2020-08-18 20:07:06,804 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 419 transitions. Word has length 88 [2020-08-18 20:07:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:06,804 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 419 transitions. [2020-08-18 20:07:06,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:07:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 419 transitions. [2020-08-18 20:07:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:07:06,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:06,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:06,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:07:06,808 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash -818281765, now seen corresponding path program 1 times [2020-08-18 20:07:06,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:06,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178444349] [2020-08-18 20:07:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,115 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:07:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:07:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:07:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:07:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:07,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178444349] [2020-08-18 20:07:07,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:07,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:07:07,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107473699] [2020-08-18 20:07:07,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:07:07,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:07,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:07:07,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:07:07,245 INFO L87 Difference]: Start difference. First operand 369 states and 419 transitions. Second operand 8 states. [2020-08-18 20:07:07,643 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:08,141 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:10,319 INFO L93 Difference]: Finished difference Result 1128 states and 1469 transitions. [2020-08-18 20:07:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:07:10,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-18 20:07:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:10,327 INFO L225 Difference]: With dead ends: 1128 [2020-08-18 20:07:10,327 INFO L226 Difference]: Without dead ends: 787 [2020-08-18 20:07:10,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 20:07:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-18 20:07:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 655. [2020-08-18 20:07:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-18 20:07:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 773 transitions. [2020-08-18 20:07:10,467 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 773 transitions. Word has length 88 [2020-08-18 20:07:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:10,469 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 773 transitions. [2020-08-18 20:07:10,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:07:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 773 transitions. [2020-08-18 20:07:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 20:07:10,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:10,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:10,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:07:10,472 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:10,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:10,473 INFO L82 PathProgramCache]: Analyzing trace with hash -470187979, now seen corresponding path program 1 times [2020-08-18 20:07:10,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:10,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551616438] [2020-08-18 20:07:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,742 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:07:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 20:07:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 20:07:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:10,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551616438] [2020-08-18 20:07:10,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:10,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:07:10,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903274674] [2020-08-18 20:07:10,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:07:10,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:07:10,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:07:10,851 INFO L87 Difference]: Start difference. First operand 655 states and 773 transitions. Second operand 8 states. [2020-08-18 20:07:11,457 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:13,863 INFO L93 Difference]: Finished difference Result 1292 states and 1674 transitions. [2020-08-18 20:07:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:07:13,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-18 20:07:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:13,873 INFO L225 Difference]: With dead ends: 1292 [2020-08-18 20:07:13,874 INFO L226 Difference]: Without dead ends: 1289 [2020-08-18 20:07:13,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:07:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-08-18 20:07:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1091. [2020-08-18 20:07:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-08-18 20:07:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1300 transitions. [2020-08-18 20:07:14,080 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1300 transitions. Word has length 92 [2020-08-18 20:07:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:14,081 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1300 transitions. [2020-08-18 20:07:14,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:07:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1300 transitions. [2020-08-18 20:07:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:07:14,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:14,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 20:07:14,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:07:14,092 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:14,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1507801122, now seen corresponding path program 1 times [2020-08-18 20:07:14,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:14,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370749147] [2020-08-18 20:07:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,405 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:07:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:07:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:07:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 20:07:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 20:07:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 20:07:14,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370749147] [2020-08-18 20:07:14,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:14,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 20:07:14,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75284967] [2020-08-18 20:07:14,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:07:14,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:14,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:07:14,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:07:14,681 INFO L87 Difference]: Start difference. First operand 1091 states and 1300 transitions. Second operand 13 states. [2020-08-18 20:07:15,337 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:15,576 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:15,849 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:17,054 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:18,432 INFO L93 Difference]: Finished difference Result 1954 states and 2438 transitions. [2020-08-18 20:07:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 20:07:18,433 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-18 20:07:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:18,442 INFO L225 Difference]: With dead ends: 1954 [2020-08-18 20:07:18,442 INFO L226 Difference]: Without dead ends: 1015 [2020-08-18 20:07:18,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-18 20:07:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-18 20:07:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 892. [2020-08-18 20:07:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-08-18 20:07:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1050 transitions. [2020-08-18 20:07:18,655 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1050 transitions. Word has length 150 [2020-08-18 20:07:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:18,656 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1050 transitions. [2020-08-18 20:07:18,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:07:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1050 transitions. [2020-08-18 20:07:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 20:07:18,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:18,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:18,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:07:18,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:18,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:18,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1309638405, now seen corresponding path program 1 times [2020-08-18 20:07:18,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:18,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679755361] [2020-08-18 20:07:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,062 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:07:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:07:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:07:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:07:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:07:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 20:07:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 20:07:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 20:07:19,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679755361] [2020-08-18 20:07:19,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:19,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 20:07:19,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354555468] [2020-08-18 20:07:19,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:07:19,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:19,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:07:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:07:19,394 INFO L87 Difference]: Start difference. First operand 892 states and 1050 transitions. Second operand 15 states. [2020-08-18 20:07:19,911 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:20,884 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:22,853 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 20:07:23,322 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 20:07:23,801 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 20:07:24,681 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 20:07:24,948 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:25,190 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:25,421 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:27,113 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 20:07:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:27,988 INFO L93 Difference]: Finished difference Result 2848 states and 3670 transitions. [2020-08-18 20:07:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-18 20:07:27,991 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-08-18 20:07:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:28,003 INFO L225 Difference]: With dead ends: 2848 [2020-08-18 20:07:28,004 INFO L226 Difference]: Without dead ends: 2108 [2020-08-18 20:07:28,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=754, Invalid=3028, Unknown=0, NotChecked=0, Total=3782 [2020-08-18 20:07:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2020-08-18 20:07:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1816. [2020-08-18 20:07:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-08-18 20:07:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2157 transitions. [2020-08-18 20:07:28,455 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2157 transitions. Word has length 152 [2020-08-18 20:07:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:28,456 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2157 transitions. [2020-08-18 20:07:28,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 20:07:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2157 transitions. [2020-08-18 20:07:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 20:07:28,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:28,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:28,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:07:28,461 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1237251847, now seen corresponding path program 1 times [2020-08-18 20:07:28,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:28,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490868979] [2020-08-18 20:07:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,759 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:07:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:07:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:07:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:07:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:07:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 20:07:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 20:07:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 20:07:29,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490868979] [2020-08-18 20:07:29,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:29,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 20:07:29,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731695150] [2020-08-18 20:07:29,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:07:29,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:29,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:07:29,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:07:29,026 INFO L87 Difference]: Start difference. First operand 1816 states and 2157 transitions. Second operand 15 states. [2020-08-18 20:07:29,716 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:29,955 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:30,192 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:31,696 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:31,951 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:32,192 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:32,459 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:32,715 INFO L93 Difference]: Finished difference Result 2571 states and 3119 transitions. [2020-08-18 20:07:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:07:32,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-08-18 20:07:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:32,717 INFO L225 Difference]: With dead ends: 2571 [2020-08-18 20:07:32,717 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:07:32,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-08-18 20:07:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:07:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:07:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:07:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:07:32,726 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-18 20:07:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:32,727 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:07:32,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 20:07:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:07:32,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:07:32,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 20:07:32,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:07:36,391 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 343 DAG size of output: 302