/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:53:13,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:53:13,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:53:13,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:53:13,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:53:13,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:53:13,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:53:13,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:53:13,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:53:13,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:53:13,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:53:13,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:53:13,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:53:13,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:53:13,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:53:13,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:53:13,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:53:13,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:53:13,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:53:13,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:53:13,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:53:13,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:53:13,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:53:13,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:53:13,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:53:13,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:53:13,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:53:13,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:53:13,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:53:13,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:53:13,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:53:13,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:53:13,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:53:13,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:53:13,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:53:13,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:53:13,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:53:13,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:53:13,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:53:13,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:53:13,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:53:13,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:53:13,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:53:13,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:53:13,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:53:13,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:53:13,130 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:53:13,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:53:13,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:53:13,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:53:13,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:53:13,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:53:13,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:53:13,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:53:13,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:53:13,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:53:13,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:53:13,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:53:13,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:53:13,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:53:13,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:53:13,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:53:13,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:53:13,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:53:13,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:53:13,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:53:13,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:53:13,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:53:13,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:53:13,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:53:13,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:53:13,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:53:13,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:53:13,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:53:13,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:53:13,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:53:13,499 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:53:13,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-18 16:53:13,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85e0c40d6/3e5be5eed9a64046b505a2d6d737471b/FLAGa66d2003c [2020-08-18 16:53:14,073 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:53:14,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-18 16:53:14,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85e0c40d6/3e5be5eed9a64046b505a2d6d737471b/FLAGa66d2003c [2020-08-18 16:53:14,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85e0c40d6/3e5be5eed9a64046b505a2d6d737471b [2020-08-18 16:53:14,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:53:14,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:53:14,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:53:14,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:53:14,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:53:14,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:14,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14, skipping insertion in model container [2020-08-18 16:53:14,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:14,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:53:14,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:53:14,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:53:14,781 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:53:14,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:53:14,985 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:53:14,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14 WrapperNode [2020-08-18 16:53:14,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:53:14,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:53:14,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:53:14,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:53:15,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... [2020-08-18 16:53:15,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:53:15,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:53:15,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:53:15,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:53:15,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:53:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:53:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:53:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:53:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:53:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:53:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:53:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:53:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:53:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:53:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:53:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:53:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:53:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:53:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:53:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:53:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:53:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:53:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:53:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:53:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:53:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:53:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:53:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:53:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:53:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:53:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:53:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:53:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:53:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:53:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:53:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:53:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:53:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:53:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:53:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:53:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:53:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:53:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:53:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:53:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:53:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:53:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:53:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:53:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:53:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:53:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:53:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:53:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:53:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:53:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:53:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:53:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:53:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:53:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:53:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:53:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:53:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:53:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:53:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:53:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:53:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:53:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:53:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:53:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:53:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:53:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:53:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:53:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:53:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:53:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:53:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:53:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:53:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:53:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:53:16,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:53:16,360 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:53:16,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:53:16 BoogieIcfgContainer [2020-08-18 16:53:16,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:53:16,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:53:16,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:53:16,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:53:16,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:53:14" (1/3) ... [2020-08-18 16:53:16,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc9973a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:53:16, skipping insertion in model container [2020-08-18 16:53:16,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:53:14" (2/3) ... [2020-08-18 16:53:16,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc9973a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:53:16, skipping insertion in model container [2020-08-18 16:53:16,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:53:16" (3/3) ... [2020-08-18 16:53:16,381 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-08-18 16:53:16,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:53:16,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:53:16,413 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:53:16,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:53:16,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:53:16,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:53:16,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:53:16,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:53:16,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:53:16,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:53:16,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:53:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 16:53:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:53:16,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:16,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:16,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:16,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1016037874, now seen corresponding path program 1 times [2020-08-18 16:53:16,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:16,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074845698] [2020-08-18 16:53:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,211 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:53:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:53:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:17,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074845698] [2020-08-18 16:53:17,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:17,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:53:17,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095617373] [2020-08-18 16:53:17,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:53:17,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:17,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:53:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:53:17,390 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-08-18 16:53:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:18,635 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2020-08-18 16:53:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:53:18,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:53:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:18,652 INFO L225 Difference]: With dead ends: 302 [2020-08-18 16:53:18,653 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 16:53:18,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:53:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 16:53:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2020-08-18 16:53:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-18 16:53:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-18 16:53:18,749 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 51 [2020-08-18 16:53:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:18,749 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-18 16:53:18,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:53:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-18 16:53:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:53:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:18,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:18,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:53:18,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2062541652, now seen corresponding path program 1 times [2020-08-18 16:53:18,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:18,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452816223] [2020-08-18 16:53:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,074 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:53:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:19,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452816223] [2020-08-18 16:53:19,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:19,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:53:19,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833404453] [2020-08-18 16:53:19,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:53:19,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:19,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:53:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:53:19,156 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 5 states. [2020-08-18 16:53:19,600 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:20,594 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2020-08-18 16:53:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:53:20,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:53:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:20,597 INFO L225 Difference]: With dead ends: 247 [2020-08-18 16:53:20,598 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 16:53:20,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:53:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 16:53:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 16:53:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 16:53:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-18 16:53:20,638 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 52 [2020-08-18 16:53:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:20,639 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-18 16:53:20,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:53:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-18 16:53:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:53:20,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:20,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:53:20,643 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1086390402, now seen corresponding path program 1 times [2020-08-18 16:53:20,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:20,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246033604] [2020-08-18 16:53:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,008 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:21,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:53:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:21,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246033604] [2020-08-18 16:53:21,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:21,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:53:21,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183813030] [2020-08-18 16:53:21,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:53:21,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:21,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:53:21,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:53:21,124 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 9 states. [2020-08-18 16:53:21,549 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:21,909 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:22,160 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:22,389 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:23,621 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2020-08-18 16:53:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:53:23,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 16:53:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:23,624 INFO L225 Difference]: With dead ends: 256 [2020-08-18 16:53:23,625 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 16:53:23,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:53:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 16:53:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 16:53:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 16:53:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 16:53:23,661 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 56 [2020-08-18 16:53:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:23,661 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 16:53:23,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:53:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 16:53:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 16:53:23,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:23,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:23,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:53:23,665 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:23,665 INFO L82 PathProgramCache]: Analyzing trace with hash -848651131, now seen corresponding path program 1 times [2020-08-18 16:53:23,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:23,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585388108] [2020-08-18 16:53:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:23,965 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:23,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:53:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 16:53:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 16:53:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:24,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585388108] [2020-08-18 16:53:24,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:24,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:53:24,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286309997] [2020-08-18 16:53:24,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:53:24,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:24,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:53:24,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:53:24,107 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2020-08-18 16:53:24,437 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:25,600 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:26,204 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2020-08-18 16:53:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:53:26,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-18 16:53:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:26,209 INFO L225 Difference]: With dead ends: 355 [2020-08-18 16:53:26,210 INFO L226 Difference]: Without dead ends: 257 [2020-08-18 16:53:26,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:53:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-18 16:53:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-08-18 16:53:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 16:53:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2020-08-18 16:53:26,259 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 69 [2020-08-18 16:53:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:26,260 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2020-08-18 16:53:26,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:53:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2020-08-18 16:53:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 16:53:26,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:26,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:26,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:53:26,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1442987939, now seen corresponding path program 1 times [2020-08-18 16:53:26,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:26,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502516509] [2020-08-18 16:53:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,623 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:26,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:53:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:53:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:53:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:26,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502516509] [2020-08-18 16:53:26,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:26,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:53:26,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188313307] [2020-08-18 16:53:26,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:53:26,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:26,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:53:26,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:53:26,724 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand 9 states. [2020-08-18 16:53:27,102 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:28,055 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:28,370 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:28,917 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:29,145 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:30,222 INFO L93 Difference]: Finished difference Result 624 states and 785 transitions. [2020-08-18 16:53:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:53:30,223 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 16:53:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:30,227 INFO L225 Difference]: With dead ends: 624 [2020-08-18 16:53:30,227 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 16:53:30,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:53:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 16:53:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2020-08-18 16:53:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-08-18 16:53:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2020-08-18 16:53:30,319 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 83 [2020-08-18 16:53:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:30,320 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2020-08-18 16:53:30,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:53:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2020-08-18 16:53:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 16:53:30,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:30,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:30,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:53:30,322 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:30,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash -142547263, now seen corresponding path program 1 times [2020-08-18 16:53:30,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:30,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141396352] [2020-08-18 16:53:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,640 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:30,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 16:53:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:53:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:53:30,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141396352] [2020-08-18 16:53:30,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:30,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:30,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310920177] [2020-08-18 16:53:30,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:30,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:30,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:30,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:30,772 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand 10 states. [2020-08-18 16:53:31,234 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:32,375 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:33,418 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:33,666 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:33,944 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:34,316 INFO L93 Difference]: Finished difference Result 818 states and 1011 transitions. [2020-08-18 16:53:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:53:34,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-18 16:53:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:34,322 INFO L225 Difference]: With dead ends: 818 [2020-08-18 16:53:34,322 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 16:53:34,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:53:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 16:53:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-18 16:53:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 16:53:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 423 transitions. [2020-08-18 16:53:34,405 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 423 transitions. Word has length 87 [2020-08-18 16:53:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:34,405 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 423 transitions. [2020-08-18 16:53:34,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 423 transitions. [2020-08-18 16:53:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:53:34,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:34,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:34,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:53:34,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:34,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1138633269, now seen corresponding path program 1 times [2020-08-18 16:53:34,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:34,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199379939] [2020-08-18 16:53:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,673 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:53:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:53:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:53:34,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199379939] [2020-08-18 16:53:34,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:34,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:53:34,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405927388] [2020-08-18 16:53:34,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:53:34,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:53:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:53:34,829 INFO L87 Difference]: Start difference. First operand 369 states and 423 transitions. Second operand 10 states. [2020-08-18 16:53:35,822 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:36,074 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:53:36,306 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:36,565 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:37,785 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2020-08-18 16:53:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:53:37,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 16:53:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:37,790 INFO L225 Difference]: With dead ends: 825 [2020-08-18 16:53:37,791 INFO L226 Difference]: Without dead ends: 484 [2020-08-18 16:53:37,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:53:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-18 16:53:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 379. [2020-08-18 16:53:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 16:53:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2020-08-18 16:53:37,892 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 103 [2020-08-18 16:53:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:37,893 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2020-08-18 16:53:37,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:53:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2020-08-18 16:53:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:53:37,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:37,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:37,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:53:37,898 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:37,898 INFO L82 PathProgramCache]: Analyzing trace with hash 789639433, now seen corresponding path program 1 times [2020-08-18 16:53:37,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:37,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453711864] [2020-08-18 16:53:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,186 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:53:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:53:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:53:38,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453711864] [2020-08-18 16:53:38,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:38,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:53:38,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780536853] [2020-08-18 16:53:38,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:53:38,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:38,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:53:38,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:53:38,389 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 12 states. [2020-08-18 16:53:38,910 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:39,156 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:39,401 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:40,072 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:40,334 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:40,612 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:53:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:41,885 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2020-08-18 16:53:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:53:41,886 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-18 16:53:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:41,891 INFO L225 Difference]: With dead ends: 845 [2020-08-18 16:53:41,891 INFO L226 Difference]: Without dead ends: 494 [2020-08-18 16:53:41,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:53:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-08-18 16:53:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 387. [2020-08-18 16:53:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-18 16:53:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 441 transitions. [2020-08-18 16:53:41,979 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 441 transitions. Word has length 103 [2020-08-18 16:53:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:41,980 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 441 transitions. [2020-08-18 16:53:41,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:53:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 441 transitions. [2020-08-18 16:53:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:53:41,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:41,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:41,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:53:41,984 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:41,984 INFO L82 PathProgramCache]: Analyzing trace with hash 549099304, now seen corresponding path program 1 times [2020-08-18 16:53:41,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:41,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692876740] [2020-08-18 16:53:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,317 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:53:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:53:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:53:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:53:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:53:42,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692876740] [2020-08-18 16:53:42,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:53:42,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:53:42,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456869388] [2020-08-18 16:53:42,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:53:42,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:42,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:53:42,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:53:42,517 INFO L87 Difference]: Start difference. First operand 387 states and 441 transitions. Second operand 8 states. [2020-08-18 16:53:43,125 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:43,797 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:45,947 INFO L93 Difference]: Finished difference Result 1164 states and 1513 transitions. [2020-08-18 16:53:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:53:45,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-08-18 16:53:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:45,953 INFO L225 Difference]: With dead ends: 1164 [2020-08-18 16:53:45,953 INFO L226 Difference]: Without dead ends: 805 [2020-08-18 16:53:45,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:53:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-08-18 16:53:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 673. [2020-08-18 16:53:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-08-18 16:53:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 795 transitions. [2020-08-18 16:53:46,063 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 795 transitions. Word has length 103 [2020-08-18 16:53:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:46,064 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 795 transitions. [2020-08-18 16:53:46,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:53:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 795 transitions. [2020-08-18 16:53:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:53:46,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:46,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:46,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:53:46,067 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:46,067 INFO L82 PathProgramCache]: Analyzing trace with hash 290063790, now seen corresponding path program 1 times [2020-08-18 16:53:46,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:46,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830681240] [2020-08-18 16:53:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,358 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:53:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:53:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:53:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:53:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:53:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:53:46,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830681240] [2020-08-18 16:53:46,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:53:46,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 16:53:46,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844816125] [2020-08-18 16:53:46,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 16:53:46,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 16:53:46,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:53:46,685 INFO L87 Difference]: Start difference. First operand 673 states and 795 transitions. Second operand 18 states. [2020-08-18 16:53:47,399 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:47,875 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:48,128 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:48,368 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:48,985 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:49,912 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:50,219 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:50,486 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:50,756 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:51,059 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:51,307 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:51,859 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:53:52,427 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:53:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:53:54,221 INFO L93 Difference]: Finished difference Result 1422 states and 1767 transitions. [2020-08-18 16:53:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-18 16:53:54,222 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-18 16:53:54,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:53:54,226 INFO L225 Difference]: With dead ends: 1422 [2020-08-18 16:53:54,226 INFO L226 Difference]: Without dead ends: 777 [2020-08-18 16:53:54,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 16:53:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-18 16:53:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 654. [2020-08-18 16:53:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-08-18 16:53:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 763 transitions. [2020-08-18 16:53:54,359 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 763 transitions. Word has length 107 [2020-08-18 16:53:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:53:54,360 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 763 transitions. [2020-08-18 16:53:54,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 16:53:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 763 transitions. [2020-08-18 16:53:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 16:53:54,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:53:54,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:53:54,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:53:54,367 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:53:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:53:54,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1933824326, now seen corresponding path program 1 times [2020-08-18 16:53:54,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:53:54,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017789258] [2020-08-18 16:53:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:53:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,724 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:53:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:53:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:53:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:53:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:53:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:53:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:53:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:53:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:53:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:53:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:53:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:53:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 16:53:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:53:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:53:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:53:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:53:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:55,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 16:53:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:55,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 16:53:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:53:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 16:53:55,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017789258] [2020-08-18 16:53:55,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:53:55,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:53:55,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669615490] [2020-08-18 16:53:55,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:53:55,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:53:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:53:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:53:55,060 INFO L87 Difference]: Start difference. First operand 654 states and 763 transitions. Second operand 19 states. [2020-08-18 16:53:55,727 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:56,039 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:56,289 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:56,531 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:53:57,179 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:53:58,133 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:58,454 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:58,733 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:59,012 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:59,324 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:53:59,572 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:00,786 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:01,024 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:01,290 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:01,543 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:02,475 INFO L93 Difference]: Finished difference Result 1213 states and 1509 transitions. [2020-08-18 16:54:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-18 16:54:02,476 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-18 16:54:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:02,477 INFO L225 Difference]: With dead ends: 1213 [2020-08-18 16:54:02,477 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:54:02,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 16:54:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:54:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:54:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:54:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:54:02,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-18 16:54:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:02,487 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:54:02,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:54:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:54:02,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:54:02,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:54:02,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:54:03,355 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-18 16:54:03,555 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-18 16:54:03,827 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-18 16:54:04,241 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-18 16:54:05,736 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-18 16:54:07,174 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 206 [2020-08-18 16:54:07,298 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-18 16:54:08,443 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 16:54:09,032 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-18 16:54:10,100 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-18 16:54:10,415 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18 [2020-08-18 16:54:10,907 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-08-18 16:54:11,089 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 16:54:11,265 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-18 16:54:11,431 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25