/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:27:43,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:27:43,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:27:43,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:27:43,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:27:43,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:27:43,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:27:43,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:27:43,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:27:43,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:27:43,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:27:43,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:27:43,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:27:43,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:27:43,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:27:43,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:27:43,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:27:43,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:27:43,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:27:43,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:27:43,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:27:43,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:27:43,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:27:43,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:27:43,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:27:43,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:27:43,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:27:43,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:27:43,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:27:43,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:27:43,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:27:43,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:27:43,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:27:43,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:27:43,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:27:43,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:27:43,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:27:43,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:27:43,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:27:43,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:27:43,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:27:43,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:27:43,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:27:43,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:27:43,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:27:43,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:27:43,267 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:27:43,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:27:43,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:27:43,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:27:43,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:27:43,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:27:43,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:27:43,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:27:43,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:27:43,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:27:43,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:27:43,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:27:43,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:27:43,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:27:43,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:27:43,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:27:43,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:27:43,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:43,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:27:43,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:27:43,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:27:43,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:27:43,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:27:43,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:27:43,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:27:43,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:27:43,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:27:43,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:27:43,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:27:43,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:27:43,591 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:27:43,592 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-08-18 18:27:43,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8b6f6af/e5866e3a7c3e40f18ee077b2a8a92022/FLAGaa2eeacb3 [2020-08-18 18:27:44,156 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:27:44,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-08-18 18:27:44,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8b6f6af/e5866e3a7c3e40f18ee077b2a8a92022/FLAGaa2eeacb3 [2020-08-18 18:27:44,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8b6f6af/e5866e3a7c3e40f18ee077b2a8a92022 [2020-08-18 18:27:44,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:27:44,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:27:44,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:44,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:27:44,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:27:44,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:44" (1/1) ... [2020-08-18 18:27:44,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54116fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:44, skipping insertion in model container [2020-08-18 18:27:44,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:44" (1/1) ... [2020-08-18 18:27:44,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:27:44,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:27:45,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:45,030 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:27:45,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:45,178 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:27:45,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45 WrapperNode [2020-08-18 18:27:45,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:45,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:27:45,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:27:45,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:27:45,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... [2020-08-18 18:27:45,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:27:45,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:27:45,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:27:45,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:27:45,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:27:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:27:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:27:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:27:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:27:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 18:27:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:27:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:27:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:27:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:27:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:27:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:27:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:27:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:27:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:27:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:27:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:27:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:27:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:27:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:27:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:27:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:27:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:27:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:27:45,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:27:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:27:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:27:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:27:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:27:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:27:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:27:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:27:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:27:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:27:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:27:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:27:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:27:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:27:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:27:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:27:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:27:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:27:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:27:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:27:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:27:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:27:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:27:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:27:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:27:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:27:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:27:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:27:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:27:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:27:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:27:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:27:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:27:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:27:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:27:45,358 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:27:45,358 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:27:45,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:27:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:27:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:27:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:27:46,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:27:46,407 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:27:46,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:46 BoogieIcfgContainer [2020-08-18 18:27:46,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:27:46,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:27:46,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:27:46,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:27:46,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:27:44" (1/3) ... [2020-08-18 18:27:46,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11435840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:46, skipping insertion in model container [2020-08-18 18:27:46,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:45" (2/3) ... [2020-08-18 18:27:46,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11435840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:46, skipping insertion in model container [2020-08-18 18:27:46,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:46" (3/3) ... [2020-08-18 18:27:46,421 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2020-08-18 18:27:46,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:27:46,439 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:27:46,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:27:46,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:27:46,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:27:46,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:27:46,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:27:46,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:27:46,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:27:46,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:27:46,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:27:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 18:27:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:27:46,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:46,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:46,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:46,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1417441614, now seen corresponding path program 1 times [2020-08-18 18:27:46,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:46,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543250211] [2020-08-18 18:27:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,171 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:47,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:27:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:47,310 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 18:27:47,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543250211] [2020-08-18 18:27:47,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:47,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:27:47,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861056070] [2020-08-18 18:27:47,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:27:47,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:27:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:47,340 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-18 18:27:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:48,600 INFO L93 Difference]: Finished difference Result 312 states and 408 transitions. [2020-08-18 18:27:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:27:48,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:27:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:48,626 INFO L225 Difference]: With dead ends: 312 [2020-08-18 18:27:48,627 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 18:27:48,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 18:27:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-08-18 18:27:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 18:27:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-18 18:27:48,723 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-18 18:27:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:48,724 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-18 18:27:48,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:27:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-18 18:27:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:27:48,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:48,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:48,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:27:48,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:48,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1689810546, now seen corresponding path program 1 times [2020-08-18 18:27:48,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:48,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731513004] [2020-08-18 18:27:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,045 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:27:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:27:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,092 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 18:27:49,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731513004] [2020-08-18 18:27:49,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:49,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:27:49,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785901589] [2020-08-18 18:27:49,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:27:49,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:49,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:27:49,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:27:49,096 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-18 18:27:49,535 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:50,415 INFO L93 Difference]: Finished difference Result 241 states and 295 transitions. [2020-08-18 18:27:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:27:50,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:27:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:50,419 INFO L225 Difference]: With dead ends: 241 [2020-08-18 18:27:50,420 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 18:27:50,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:27:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 18:27:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-08-18 18:27:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 18:27:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-18 18:27:50,459 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-18 18:27:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:50,460 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-18 18:27:50,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:27:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-18 18:27:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:27:50,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:50,462 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 18:27:50,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:27:50,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1011180464, now seen corresponding path program 1 times [2020-08-18 18:27:50,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:50,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417009475] [2020-08-18 18:27:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,825 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:27:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:50,899 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 18:27:50,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417009475] [2020-08-18 18:27:50,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:50,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:50,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862271387] [2020-08-18 18:27:50,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:50,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:50,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:50,902 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-18 18:27:51,313 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:51,670 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:51,919 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:52,162 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:53,387 INFO L93 Difference]: Finished difference Result 254 states and 313 transitions. [2020-08-18 18:27:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:27:53,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 18:27:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:53,394 INFO L225 Difference]: With dead ends: 254 [2020-08-18 18:27:53,394 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 18:27:53,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:27:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 18:27:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-08-18 18:27:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 18:27:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2020-08-18 18:27:53,458 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 52 [2020-08-18 18:27:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:53,458 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2020-08-18 18:27:53,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:27:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2020-08-18 18:27:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 18:27:53,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:53,468 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] [2020-08-18 18:27:53,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:27:53,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:53,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:53,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1017334303, now seen corresponding path program 1 times [2020-08-18 18:27:53,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:53,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401239661] [2020-08-18 18:27:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,826 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:27:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:27:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 18:27:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:53,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401239661] [2020-08-18 18:27:53,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:53,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:27:53,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018146241] [2020-08-18 18:27:53,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:27:53,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:27:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:27:53,951 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand 6 states. [2020-08-18 18:27:54,289 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:55,453 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:56,195 INFO L93 Difference]: Finished difference Result 356 states and 440 transitions. [2020-08-18 18:27:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:27:56,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 18:27:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:56,203 INFO L225 Difference]: With dead ends: 356 [2020-08-18 18:27:56,204 INFO L226 Difference]: Without dead ends: 255 [2020-08-18 18:27:56,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:27:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-18 18:27:56,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-18 18:27:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-18 18:27:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 241 transitions. [2020-08-18 18:27:56,252 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 241 transitions. Word has length 65 [2020-08-18 18:27:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:56,253 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 241 transitions. [2020-08-18 18:27:56,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:27:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 241 transitions. [2020-08-18 18:27:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 18:27:56,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:56,255 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] [2020-08-18 18:27:56,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:27:56,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:56,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1244154125, now seen corresponding path program 1 times [2020-08-18 18:27:56,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:56,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529421254] [2020-08-18 18:27:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,567 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:56,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:27:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:27:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:27:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 18:27:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:56,685 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 18:27:56,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529421254] [2020-08-18 18:27:56,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:56,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:56,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757563749] [2020-08-18 18:27:56,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:56,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:56,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:56,687 INFO L87 Difference]: Start difference. First operand 212 states and 241 transitions. Second operand 8 states. [2020-08-18 18:27:57,118 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:58,073 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:58,390 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:58,921 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:59,147 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:59,445 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:00,362 INFO L93 Difference]: Finished difference Result 634 states and 779 transitions. [2020-08-18 18:28:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:28:00,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 18:28:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:00,368 INFO L225 Difference]: With dead ends: 634 [2020-08-18 18:28:00,368 INFO L226 Difference]: Without dead ends: 446 [2020-08-18 18:28:00,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:28:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-08-18 18:28:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 379. [2020-08-18 18:28:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 18:28:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 432 transitions. [2020-08-18 18:28:00,459 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 432 transitions. Word has length 79 [2020-08-18 18:28:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:00,460 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 432 transitions. [2020-08-18 18:28:00,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:28:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 432 transitions. [2020-08-18 18:28:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 18:28:00,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:00,462 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 18:28:00,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:28:00,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1996569391, now seen corresponding path program 1 times [2020-08-18 18:28:00,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:00,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981522477] [2020-08-18 18:28:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,750 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 18:28:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 18:28:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,884 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 18:28:00,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981522477] [2020-08-18 18:28:00,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:00,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:28:00,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657880417] [2020-08-18 18:28:00,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:00,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:00,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:00,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:00,887 INFO L87 Difference]: Start difference. First operand 379 states and 432 transitions. Second operand 9 states. [2020-08-18 18:28:01,260 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:02,367 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:02,652 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:03,565 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:03,819 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:04,070 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:04,374 INFO L93 Difference]: Finished difference Result 488 states and 612 transitions. [2020-08-18 18:28:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:28:04,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 18:28:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:04,384 INFO L225 Difference]: With dead ends: 488 [2020-08-18 18:28:04,384 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 18:28:04,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:28:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 18:28:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-18 18:28:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 18:28:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 431 transitions. [2020-08-18 18:28:04,456 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 431 transitions. Word has length 83 [2020-08-18 18:28:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:04,456 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 431 transitions. [2020-08-18 18:28:04,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 431 transitions. [2020-08-18 18:28:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 18:28:04,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:04,459 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] [2020-08-18 18:28:04,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:28:04,459 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:04,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1098775200, now seen corresponding path program 1 times [2020-08-18 18:28:04,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:04,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366546462] [2020-08-18 18:28:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,699 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:04,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:28:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:28:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:28:04,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366546462] [2020-08-18 18:28:04,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:04,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:28:04,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277935515] [2020-08-18 18:28:04,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:04,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:04,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:04,839 INFO L87 Difference]: Start difference. First operand 379 states and 431 transitions. Second operand 9 states. [2020-08-18 18:28:05,738 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:06,000 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:28:06,234 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:06,460 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:07,496 INFO L93 Difference]: Finished difference Result 848 states and 1052 transitions. [2020-08-18 18:28:07,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:07,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-08-18 18:28:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:07,501 INFO L225 Difference]: With dead ends: 848 [2020-08-18 18:28:07,501 INFO L226 Difference]: Without dead ends: 493 [2020-08-18 18:28:07,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:28:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-08-18 18:28:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 389. [2020-08-18 18:28:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-08-18 18:28:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 441 transitions. [2020-08-18 18:28:07,591 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 441 transitions. Word has length 99 [2020-08-18 18:28:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:07,591 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 441 transitions. [2020-08-18 18:28:07,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 441 transitions. [2020-08-18 18:28:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 18:28:07,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:07,594 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] [2020-08-18 18:28:07,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:28:07,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:07,595 INFO L82 PathProgramCache]: Analyzing trace with hash -205288862, now seen corresponding path program 1 times [2020-08-18 18:28:07,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:07,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085747037] [2020-08-18 18:28:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,849 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:28:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:28:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:28:08,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085747037] [2020-08-18 18:28:08,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:08,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:28:08,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128205679] [2020-08-18 18:28:08,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:28:08,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:08,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:28:08,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:28:08,017 INFO L87 Difference]: Start difference. First operand 389 states and 441 transitions. Second operand 11 states. [2020-08-18 18:28:08,670 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:08,898 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:09,126 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:09,767 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:10,005 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:10,236 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:11,411 INFO L93 Difference]: Finished difference Result 868 states and 1074 transitions. [2020-08-18 18:28:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:28:11,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-08-18 18:28:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:11,422 INFO L225 Difference]: With dead ends: 868 [2020-08-18 18:28:11,423 INFO L226 Difference]: Without dead ends: 503 [2020-08-18 18:28:11,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:28:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-08-18 18:28:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 397. [2020-08-18 18:28:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-18 18:28:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 449 transitions. [2020-08-18 18:28:11,566 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 449 transitions. Word has length 99 [2020-08-18 18:28:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:11,566 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 449 transitions. [2020-08-18 18:28:11,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:28:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 449 transitions. [2020-08-18 18:28:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 18:28:11,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:11,572 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] [2020-08-18 18:28:11,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:28:11,572 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:11,573 INFO L82 PathProgramCache]: Analyzing trace with hash -213048221, now seen corresponding path program 1 times [2020-08-18 18:28:11,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:11,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476126818] [2020-08-18 18:28:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,833 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:28:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:28:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:28:12,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476126818] [2020-08-18 18:28:12,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:12,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:28:12,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51636158] [2020-08-18 18:28:12,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:28:12,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:12,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:28:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:28:12,039 INFO L87 Difference]: Start difference. First operand 397 states and 449 transitions. Second operand 7 states. [2020-08-18 18:28:12,563 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:13,066 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:15,341 INFO L93 Difference]: Finished difference Result 1210 states and 1548 transitions. [2020-08-18 18:28:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:28:15,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-08-18 18:28:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:15,348 INFO L225 Difference]: With dead ends: 1210 [2020-08-18 18:28:15,348 INFO L226 Difference]: Without dead ends: 837 [2020-08-18 18:28:15,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:28:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-18 18:28:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 717. [2020-08-18 18:28:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-18 18:28:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 843 transitions. [2020-08-18 18:28:15,505 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 843 transitions. Word has length 99 [2020-08-18 18:28:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:15,507 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 843 transitions. [2020-08-18 18:28:15,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:28:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 843 transitions. [2020-08-18 18:28:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 18:28:15,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:15,511 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 18:28:15,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:28:15,511 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1140072279, now seen corresponding path program 1 times [2020-08-18 18:28:15,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:15,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050249883] [2020-08-18 18:28:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,778 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:28:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:28:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:28:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:28:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:28:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,106 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 18:28:16,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050249883] [2020-08-18 18:28:16,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:28:16,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 18:28:16,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610651094] [2020-08-18 18:28:16,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 18:28:16,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:16,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 18:28:16,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 18:28:16,110 INFO L87 Difference]: Start difference. First operand 717 states and 843 transitions. Second operand 17 states. [2020-08-18 18:28:16,760 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:17,086 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:17,338 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:17,573 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:18,199 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:19,206 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:19,519 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:19,787 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:20,043 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:20,346 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:20,608 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:21,195 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 18:28:21,746 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 18:28:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:23,844 INFO L93 Difference]: Finished difference Result 1499 states and 1843 transitions. [2020-08-18 18:28:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 18:28:23,845 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-08-18 18:28:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:23,851 INFO L225 Difference]: With dead ends: 1499 [2020-08-18 18:28:23,851 INFO L226 Difference]: Without dead ends: 806 [2020-08-18 18:28:23,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 18:28:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-08-18 18:28:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 689. [2020-08-18 18:28:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-18 18:28:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 797 transitions. [2020-08-18 18:28:23,982 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 797 transitions. Word has length 103 [2020-08-18 18:28:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:23,982 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 797 transitions. [2020-08-18 18:28:23,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 18:28:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 797 transitions. [2020-08-18 18:28:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 18:28:23,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:23,986 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, 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] [2020-08-18 18:28:23,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:28:23,987 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:23,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1934361844, now seen corresponding path program 1 times [2020-08-18 18:28:23,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:23,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711801204] [2020-08-18 18:28:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,333 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:28:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:28:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:28:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 18:28:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 18:28:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 18:28:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:28:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 18:28:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 18:28:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 18:28:24,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711801204] [2020-08-18 18:28:24,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:28:24,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 18:28:24,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519368169] [2020-08-18 18:28:24,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 18:28:24,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:24,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 18:28:24,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:28:24,704 INFO L87 Difference]: Start difference. First operand 689 states and 797 transitions. Second operand 18 states. [2020-08-18 18:28:25,864 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:26,191 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:26,474 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:26,727 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:27,415 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:28,463 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:28,788 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:29,075 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:29,340 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:29,674 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:29,930 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:30,993 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:31,226 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:31,512 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:31,754 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:32,541 INFO L93 Difference]: Finished difference Result 1274 states and 1566 transitions. [2020-08-18 18:28:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-18 18:28:32,542 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 155 [2020-08-18 18:28:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:32,543 INFO L225 Difference]: With dead ends: 1274 [2020-08-18 18:28:32,543 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:28:32,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2020-08-18 18:28:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:28:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:28:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:28:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:28:32,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-18 18:28:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:32,550 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:28:32,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 18:28:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:28:32,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:28:32,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:28:32,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:28:33,616 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 18:28:33,745 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-18 18:28:34,291 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 197 [2020-08-18 18:28:34,417 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 18:28:35,758 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-18 18:28:37,105 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 263 [2020-08-18 18:28:38,731 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 263 [2020-08-18 18:28:39,668 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-18 18:28:40,207 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-18 18:28:40,396 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 18 [2020-08-18 18:28:40,916 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-18 18:28:41,424 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 24 [2020-08-18 18:28:41,587 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 18:28:41,751 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-18 18:28:41,917 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 18:28:42,437 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 24