/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:09:43,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:09:43,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:09:44,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:09:44,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:09:44,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:09:44,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:09:44,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:09:44,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:09:44,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:09:44,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:09:44,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:09:44,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:09:44,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:09:44,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:09:44,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:09:44,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:09:44,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:09:44,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:09:44,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:09:44,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:09:44,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:09:44,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:09:44,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:09:44,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:09:44,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:09:44,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:09:44,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:09:44,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:09:44,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:09:44,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:09:44,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:09:44,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:09:44,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:09:44,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:09:44,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:09:44,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:09:44,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:09:44,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:09:44,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:09:44,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:09:44,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 06:09:44,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:09:44,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:09:44,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:09:44,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:09:44,078 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:09:44,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:09:44,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:09:44,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:09:44,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:09:44,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:09:44,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:09:44,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:09:44,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:09:44,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:09:44,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:09:44,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:09:44,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:09:44,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:09:44,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:09:44,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:09:44,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:09:44,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:09:44,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:09:44,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:09:44,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:09:44,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:09:44,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:09:44,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:09:44,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:09:44,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:09:44,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:09:44,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:09:44,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:09:44,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:09:44,439 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:09:44,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-22 06:09:44,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e512decdf/af6211fe2c484ad587aaf404063107d5/FLAG646546b1b [2020-08-22 06:09:45,050 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:09:45,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-22 06:09:45,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e512decdf/af6211fe2c484ad587aaf404063107d5/FLAG646546b1b [2020-08-22 06:09:45,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e512decdf/af6211fe2c484ad587aaf404063107d5 [2020-08-22 06:09:45,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:09:45,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:09:45,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:09:45,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:09:45,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:09:45,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:45" (1/1) ... [2020-08-22 06:09:45,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:45, skipping insertion in model container [2020-08-22 06:09:45,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:45" (1/1) ... [2020-08-22 06:09:45,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:09:45,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:09:45,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:09:45,894 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:09:45,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:09:46,018 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:09:46,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46 WrapperNode [2020-08-22 06:09:46,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:09:46,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:09:46,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:09:46,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:09:46,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... [2020-08-22 06:09:46,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:09:46,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:09:46,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:09:46,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:09:46,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:09:46,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:09:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:09:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:09:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:09:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:09:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:09:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:09:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 06:09:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:09:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:09:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 06:09:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 06:09:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:09:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 06:09:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:09:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:09:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:09:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:09:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:09:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:09:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:09:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:09:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 06:09:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:09:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:09:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:09:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:09:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:09:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:09:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:09:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:09:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:09:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:09:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:09:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:09:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:09:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:09:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:09:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:09:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:09:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 06:09:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 06:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 06:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 06:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:09:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:09:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:09:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:09:47,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:09:47,256 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:09:47,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:47 BoogieIcfgContainer [2020-08-22 06:09:47,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:09:47,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:09:47,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:09:47,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:09:47,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:09:45" (1/3) ... [2020-08-22 06:09:47,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0b6365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:47, skipping insertion in model container [2020-08-22 06:09:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:46" (2/3) ... [2020-08-22 06:09:47,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0b6365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:47, skipping insertion in model container [2020-08-22 06:09:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:47" (3/3) ... [2020-08-22 06:09:47,271 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-08-22 06:09:47,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:09:47,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:09:47,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:09:47,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:09:47,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:09:47,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:09:47,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:09:47,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:09:47,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:09:47,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:09:47,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:09:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-22 06:09:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 06:09:47,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:47,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:47,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-08-22 06:09:47,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:47,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133822745] [2020-08-22 06:09:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,077 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:09:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:09:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:48,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133822745] [2020-08-22 06:09:48,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:48,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:09:48,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946665813] [2020-08-22 06:09:48,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:09:48,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:48,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:09:48,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:09:48,239 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-22 06:09:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:49,478 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-08-22 06:09:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:09:49,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 06:09:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:49,496 INFO L225 Difference]: With dead ends: 343 [2020-08-22 06:09:49,496 INFO L226 Difference]: Without dead ends: 185 [2020-08-22 06:09:49,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:09:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-22 06:09:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-22 06:09:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-22 06:09:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-08-22 06:09:49,601 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-08-22 06:09:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:49,602 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-08-22 06:09:49,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:09:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-08-22 06:09:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 06:09:49,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:49,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:49,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:09:49,609 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:49,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-08-22 06:09:49,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:49,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602349855] [2020-08-22 06:09:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,908 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:09:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:49,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602349855] [2020-08-22 06:09:49,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:49,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:09:49,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99502258] [2020-08-22 06:09:49,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:09:49,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:49,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:09:49,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:09:49,952 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-08-22 06:09:50,346 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:51,292 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-08-22 06:09:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:09:51,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 06:09:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:51,295 INFO L225 Difference]: With dead ends: 270 [2020-08-22 06:09:51,296 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 06:09:51,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:09:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 06:09:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-22 06:09:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 06:09:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-08-22 06:09:51,361 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-08-22 06:09:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:51,361 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-08-22 06:09:51,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:09:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-08-22 06:09:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 06:09:51,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:51,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:51,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:09:51,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:51,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:51,365 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-08-22 06:09:51,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:51,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203843101] [2020-08-22 06:09:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,738 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:09:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:09:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:51,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203843101] [2020-08-22 06:09:51,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:51,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:09:51,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721016162] [2020-08-22 06:09:51,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:09:51,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:09:51,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:09:51,829 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-08-22 06:09:52,182 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:52,517 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:52,752 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:52,982 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:53,673 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:55,621 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-08-22 06:09:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:09:55,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 06:09:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:55,628 INFO L225 Difference]: With dead ends: 476 [2020-08-22 06:09:55,628 INFO L226 Difference]: Without dead ends: 360 [2020-08-22 06:09:55,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:09:55,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-22 06:09:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-22 06:09:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-22 06:09:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-08-22 06:09:55,700 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-08-22 06:09:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:55,701 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-08-22 06:09:55,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:09:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-08-22 06:09:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 06:09:55,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:55,704 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] [2020-08-22 06:09:55,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:09:55,704 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-08-22 06:09:55,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:55,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435127921] [2020-08-22 06:09:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,071 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:56,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:09:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:09:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:56,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435127921] [2020-08-22 06:09:56,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:56,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 06:09:56,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925489348] [2020-08-22 06:09:56,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:09:56,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:56,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:09:56,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:09:56,220 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-08-22 06:09:56,611 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:56,902 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:57,155 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:57,396 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:57,912 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:58,773 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:59,152 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:59,521 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:59,783 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:10:00,068 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:00,458 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:10:00,802 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:10:01,160 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:03,271 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-08-22 06:10:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 06:10:03,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 06:10:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:03,282 INFO L225 Difference]: With dead ends: 1213 [2020-08-22 06:10:03,282 INFO L226 Difference]: Without dead ends: 939 [2020-08-22 06:10:03,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 06:10:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-22 06:10:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-08-22 06:10:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-08-22 06:10:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-08-22 06:10:03,507 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-08-22 06:10:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:03,508 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-08-22 06:10:03,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:10:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-08-22 06:10:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 06:10:03,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:03,513 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] [2020-08-22 06:10:03,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:10:03,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-08-22 06:10:03,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:03,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722968669] [2020-08-22 06:10:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,760 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:03,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:10:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:10:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:10:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 06:10:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:10:03,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722968669] [2020-08-22 06:10:03,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:10:03,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:10:03,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231641968] [2020-08-22 06:10:03,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:10:03,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:03,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:10:03,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:10:03,828 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-08-22 06:10:04,135 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:06,001 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-08-22 06:10:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:10:06,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 06:10:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:06,009 INFO L225 Difference]: With dead ends: 1979 [2020-08-22 06:10:06,010 INFO L226 Difference]: Without dead ends: 1161 [2020-08-22 06:10:06,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:10:06,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-08-22 06:10:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-08-22 06:10:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-08-22 06:10:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-08-22 06:10:06,295 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-08-22 06:10:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:06,296 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-08-22 06:10:06,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:10:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-08-22 06:10:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 06:10:06,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:06,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:06,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:10:06,300 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:06,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:06,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-08-22 06:10:06,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:06,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738231848] [2020-08-22 06:10:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,735 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:06,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:10:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:10:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 06:10:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:10:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:10:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:10:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 06:10:06,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738231848] [2020-08-22 06:10:06,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:06,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:10:06,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724461596] [2020-08-22 06:10:06,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:10:06,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:06,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:10:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:10:06,902 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-08-22 06:10:07,564 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 06:10:08,116 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:10,219 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:12,045 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-08-22 06:10:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 06:10:12,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 06:10:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:12,054 INFO L225 Difference]: With dead ends: 2051 [2020-08-22 06:10:12,054 INFO L226 Difference]: Without dead ends: 1278 [2020-08-22 06:10:12,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 06:10:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-22 06:10:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-08-22 06:10:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-22 06:10:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-08-22 06:10:12,283 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-08-22 06:10:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:12,284 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-08-22 06:10:12,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:10:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-08-22 06:10:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 06:10:12,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:12,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:12,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:10:12,290 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash 321074684, now seen corresponding path program 1 times [2020-08-22 06:10:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:12,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475925772] [2020-08-22 06:10:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,553 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:10:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:10:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:10:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 06:10:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:10:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 06:10:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 06:10:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 06:10:12,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475925772] [2020-08-22 06:10:12,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:12,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:10:12,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101713331] [2020-08-22 06:10:12,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:10:12,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:10:12,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:10:12,845 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 10 states. [2020-08-22 06:10:14,599 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:14,934 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:10:15,247 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:15,463 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:16,713 INFO L93 Difference]: Finished difference Result 2491 states and 3270 transitions. [2020-08-22 06:10:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:10:16,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-22 06:10:16,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:16,722 INFO L225 Difference]: With dead ends: 2491 [2020-08-22 06:10:16,723 INFO L226 Difference]: Without dead ends: 1334 [2020-08-22 06:10:16,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:10:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-08-22 06:10:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1211. [2020-08-22 06:10:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-08-22 06:10:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1485 transitions. [2020-08-22 06:10:17,006 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1485 transitions. Word has length 143 [2020-08-22 06:10:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:17,007 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1485 transitions. [2020-08-22 06:10:17,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:10:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1485 transitions. [2020-08-22 06:10:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 06:10:17,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:17,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:17,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:10:17,014 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1297900230, now seen corresponding path program 1 times [2020-08-22 06:10:17,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:17,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158998851] [2020-08-22 06:10:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,339 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:10:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:10:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:10:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 06:10:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:10:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 06:10:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 06:10:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 06:10:17,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158998851] [2020-08-22 06:10:17,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:17,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:10:17,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719494052] [2020-08-22 06:10:17,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:10:17,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:17,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:10:17,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:10:17,550 INFO L87 Difference]: Start difference. First operand 1211 states and 1485 transitions. Second operand 12 states. [2020-08-22 06:10:18,291 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:18,530 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:18,767 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:19,411 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:19,692 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:19,936 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:21,206 INFO L93 Difference]: Finished difference Result 2221 states and 2811 transitions. [2020-08-22 06:10:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:10:21,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-22 06:10:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:21,213 INFO L225 Difference]: With dead ends: 2221 [2020-08-22 06:10:21,214 INFO L226 Difference]: Without dead ends: 1034 [2020-08-22 06:10:21,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:10:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-22 06:10:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 978. [2020-08-22 06:10:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-22 06:10:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1184 transitions. [2020-08-22 06:10:21,392 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1184 transitions. Word has length 143 [2020-08-22 06:10:21,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:21,393 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1184 transitions. [2020-08-22 06:10:21,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:10:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1184 transitions. [2020-08-22 06:10:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 06:10:21,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:21,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:21,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:10:21,397 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-08-22 06:10:21,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:21,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125444791] [2020-08-22 06:10:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,642 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:10:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:10:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:10:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:10:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:10:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 06:10:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 06:10:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:10:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 06:10:21,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125444791] [2020-08-22 06:10:21,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:21,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:10:21,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972446608] [2020-08-22 06:10:21,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:10:21,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:21,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:10:21,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:10:21,838 INFO L87 Difference]: Start difference. First operand 978 states and 1184 transitions. Second operand 10 states. [2020-08-22 06:10:23,548 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:23,784 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:10:24,042 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:24,280 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:24,656 INFO L93 Difference]: Finished difference Result 1865 states and 2314 transitions. [2020-08-22 06:10:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:10:24,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-22 06:10:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:24,663 INFO L225 Difference]: With dead ends: 1865 [2020-08-22 06:10:24,663 INFO L226 Difference]: Without dead ends: 1066 [2020-08-22 06:10:24,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:10:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-08-22 06:10:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1010. [2020-08-22 06:10:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-08-22 06:10:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1218 transitions. [2020-08-22 06:10:24,833 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1218 transitions. Word has length 147 [2020-08-22 06:10:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:24,834 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1218 transitions. [2020-08-22 06:10:24,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:10:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1218 transitions. [2020-08-22 06:10:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 06:10:24,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:24,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:24,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:10:24,838 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-08-22 06:10:24,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:24,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350789836] [2020-08-22 06:10:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,175 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:25,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:10:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:10:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:10:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:10:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:10:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 06:10:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 06:10:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:10:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 06:10:25,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350789836] [2020-08-22 06:10:25,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:25,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:10:25,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70372872] [2020-08-22 06:10:25,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:10:25,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:10:25,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:10:25,324 INFO L87 Difference]: Start difference. First operand 1010 states and 1218 transitions. Second operand 10 states. [2020-08-22 06:10:25,682 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:27,389 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:27,689 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:27,933 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:28,164 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:28,445 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:10:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:28,874 INFO L93 Difference]: Finished difference Result 1087 states and 1336 transitions. [2020-08-22 06:10:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 06:10:28,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-22 06:10:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:28,882 INFO L225 Difference]: With dead ends: 1087 [2020-08-22 06:10:28,882 INFO L226 Difference]: Without dead ends: 1084 [2020-08-22 06:10:28,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 06:10:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-22 06:10:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1010. [2020-08-22 06:10:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-08-22 06:10:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1213 transitions. [2020-08-22 06:10:29,083 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1213 transitions. Word has length 147 [2020-08-22 06:10:29,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:29,083 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1213 transitions. [2020-08-22 06:10:29,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:10:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1213 transitions. [2020-08-22 06:10:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 06:10:29,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:29,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:29,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:10:29,088 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:29,089 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-08-22 06:10:29,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:29,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953824162] [2020-08-22 06:10:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,381 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:10:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:10:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:10:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:10:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:10:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 06:10:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 06:10:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 06:10:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 06:10:29,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953824162] [2020-08-22 06:10:29,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:29,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:10:29,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522278044] [2020-08-22 06:10:29,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:10:29,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:10:29,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:10:29,591 INFO L87 Difference]: Start difference. First operand 1010 states and 1213 transitions. Second operand 12 states. [2020-08-22 06:10:29,968 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:30,584 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:31,085 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:31,368 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:31,632 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:31,871 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:10:32,145 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:10:32,418 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:10:34,120 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:34,844 INFO L93 Difference]: Finished difference Result 2425 states and 3146 transitions. [2020-08-22 06:10:34,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 06:10:34,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-22 06:10:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:34,854 INFO L225 Difference]: With dead ends: 2425 [2020-08-22 06:10:34,855 INFO L226 Difference]: Without dead ends: 1594 [2020-08-22 06:10:34,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 06:10:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-08-22 06:10:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1344. [2020-08-22 06:10:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-08-22 06:10:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1649 transitions. [2020-08-22 06:10:35,076 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1649 transitions. Word has length 151 [2020-08-22 06:10:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:10:35,077 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1649 transitions. [2020-08-22 06:10:35,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:10:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1649 transitions. [2020-08-22 06:10:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 06:10:35,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:10:35,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:10:35,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:10:35,084 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:10:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:10:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-08-22 06:10:35,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:10:35,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962679009] [2020-08-22 06:10:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:10:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,395 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:10:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:10:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:10:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:10:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:10:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:10:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:10:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:10:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:10:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 06:10:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:10:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:10:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 06:10:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 06:10:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:10:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 06:10:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:10:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 06:10:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 06:10:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:10:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 06:10:35,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962679009] [2020-08-22 06:10:35,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:10:35,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 06:10:35,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400393089] [2020-08-22 06:10:35,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 06:10:35,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:10:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 06:10:35,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:10:35,802 INFO L87 Difference]: Start difference. First operand 1344 states and 1649 transitions. Second operand 13 states. [2020-08-22 06:10:36,877 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:37,181 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:10:39,282 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 06:10:39,539 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:10:39,784 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:10:40,233 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-22 06:10:42,100 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-22 06:10:42,377 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 06:10:42,697 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:10:42,976 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:10:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:10:43,967 INFO L93 Difference]: Finished difference Result 3585 states and 4671 transitions. [2020-08-22 06:10:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 06:10:43,967 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2020-08-22 06:10:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:10:43,982 INFO L225 Difference]: With dead ends: 3585 [2020-08-22 06:10:43,983 INFO L226 Difference]: Without dead ends: 2416 [2020-08-22 06:10:43,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 06:10:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states.