/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:51:28,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:51:28,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:51:28,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:51:28,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:51:28,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:51:28,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:51:28,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:51:28,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:51:28,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:51:28,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:51:28,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:51:28,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:51:28,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:51:28,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:51:28,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:51:28,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:51:28,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:51:28,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:51:28,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:51:28,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:51:28,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:51:28,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:51:28,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:51:28,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:51:28,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:51:28,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:51:28,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:51:28,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:51:28,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:51:28,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:51:28,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:51:28,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:51:28,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:51:28,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:51:28,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:51:28,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:51:28,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:51:28,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:51:28,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:51:28,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:51:28,186 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 [2020-08-21 18:51:28,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:51:28,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:51:28,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:51:28,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:51:28,211 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:51:28,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:51:28,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:51:28,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:51:28,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:51:28,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:51:28,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:51:28,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:51:28,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:51:28,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:51:28,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:51:28,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:51:28,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:51:28,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:51:28,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:51:28,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:51:28,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:51:28,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:51:28,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:51:28,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:51:28,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:51:28,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:51:28,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:51:28,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:51:28,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:51:28,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:51:28,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:51:28,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:51:28,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:51:28,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:51:28,536 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:51:28,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-08-21 18:51:28,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78fed72ff/ca56900b33ab41d68dce48c6f3604a9d/FLAG0c95bb107 [2020-08-21 18:51:29,126 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:51:29,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-08-21 18:51:29,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78fed72ff/ca56900b33ab41d68dce48c6f3604a9d/FLAG0c95bb107 [2020-08-21 18:51:29,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78fed72ff/ca56900b33ab41d68dce48c6f3604a9d [2020-08-21 18:51:29,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:51:29,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:51:29,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:51:29,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:51:29,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:51:29,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:51:29" (1/1) ... [2020-08-21 18:51:29,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469b4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:29, skipping insertion in model container [2020-08-21 18:51:29,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:51:29" (1/1) ... [2020-08-21 18:51:29,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:51:29,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:51:30,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:51:30,029 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:51:30,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:51:30,196 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:51:30,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30 WrapperNode [2020-08-21 18:51:30,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:51:30,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:51:30,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:51:30,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:51:30,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (1/1) ... [2020-08-21 18:51:30,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:51:30,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:51:30,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:51:30,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:51:30,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (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 [2020-08-21 18:51:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:51:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:51:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:51:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:51:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:51:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:51:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:51:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:51:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:51:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:51:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:51:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:51:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:51:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:51:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:51:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:51:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:51:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:51:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:51:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:51:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:51:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:51:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:51:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:51:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:51:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:51:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:51:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:51:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:51:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:51:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:51:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:51:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:51:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:51:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:51:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:51:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:51:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:51:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:51:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:51:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:51:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:51:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:51:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:51:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:51:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:51:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:51:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:51:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:51:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:51:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:51:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:51:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:51:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:51:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:51:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:51:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:51:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:51:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:51:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:51:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:51:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:51:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:51:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:51:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:51:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:51:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:51:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:51:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:51:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:51:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:51:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:51:31,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:51:31,663 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:51:31,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:51:31 BoogieIcfgContainer [2020-08-21 18:51:31,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:51:31,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:51:31,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:51:31,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:51:31,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:51:29" (1/3) ... [2020-08-21 18:51:31,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c8cb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:51:31, skipping insertion in model container [2020-08-21 18:51:31,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:30" (2/3) ... [2020-08-21 18:51:31,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c8cb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:51:31, skipping insertion in model container [2020-08-21 18:51:31,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:51:31" (3/3) ... [2020-08-21 18:51:31,678 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2020-08-21 18:51:31,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:51:31,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:51:31,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:51:31,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:51:31,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:51:31,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:51:31,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:51:31,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:51:31,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:51:31,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:51:31,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:51:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-21 18:51:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:51:31,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:31,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:31,783 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1109188308, now seen corresponding path program 1 times [2020-08-21 18:51:31,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:31,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056423613] [2020-08-21 18:51:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,485 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:51:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:51:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:51:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:32,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056423613] [2020-08-21 18:51:32,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:32,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:51:32,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967634711] [2020-08-21 18:51:32,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:51:32,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:32,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:51:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:51:32,645 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-21 18:51:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:33,774 INFO L93 Difference]: Finished difference Result 309 states and 395 transitions. [2020-08-21 18:51:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:51:33,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 18:51:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:33,801 INFO L225 Difference]: With dead ends: 309 [2020-08-21 18:51:33,801 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 18:51:33,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:51:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 18:51:33,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 140. [2020-08-21 18:51:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-21 18:51:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2020-08-21 18:51:33,962 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 59 [2020-08-21 18:51:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:33,964 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2020-08-21 18:51:33,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:51:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2020-08-21 18:51:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 18:51:33,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:33,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:33,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:51:33,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash 813843432, now seen corresponding path program 1 times [2020-08-21 18:51:33,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:33,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233647921] [2020-08-21 18:51:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,348 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:51:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:51:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:51:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:34,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233647921] [2020-08-21 18:51:34,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:34,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:51:34,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749139947] [2020-08-21 18:51:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:51:34,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:51:34,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:51:34,431 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand 5 states. [2020-08-21 18:51:34,877 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:35,725 INFO L93 Difference]: Finished difference Result 250 states and 303 transitions. [2020-08-21 18:51:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:51:35,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 18:51:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:35,729 INFO L225 Difference]: With dead ends: 250 [2020-08-21 18:51:35,729 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 18:51:35,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:51:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 18:51:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2020-08-21 18:51:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 18:51:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-21 18:51:35,766 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 60 [2020-08-21 18:51:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:35,767 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-21 18:51:35,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:51:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-21 18:51:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 18:51:35,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:35,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:35,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:51:35,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 605286682, now seen corresponding path program 1 times [2020-08-21 18:51:35,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:35,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389427151] [2020-08-21 18:51:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,082 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:51:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:51:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:51:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:36,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389427151] [2020-08-21 18:51:36,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:36,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:36,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077523372] [2020-08-21 18:51:36,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:36,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:36,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:36,218 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 9 states. [2020-08-21 18:51:36,589 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:36,903 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:37,162 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:37,444 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:38,651 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-21 18:51:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:51:38,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 18:51:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:38,657 INFO L225 Difference]: With dead ends: 263 [2020-08-21 18:51:38,657 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 18:51:38,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:51:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 18:51:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2020-08-21 18:51:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 18:51:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2020-08-21 18:51:38,702 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 65 [2020-08-21 18:51:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:38,702 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2020-08-21 18:51:38,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2020-08-21 18:51:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 18:51:38,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:38,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:38,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:51:38,705 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:38,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1239264208, now seen corresponding path program 1 times [2020-08-21 18:51:38,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:38,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964636770] [2020-08-21 18:51:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,057 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:51:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:51:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 18:51:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:51:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:39,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964636770] [2020-08-21 18:51:39,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:39,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:51:39,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321282489] [2020-08-21 18:51:39,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:51:39,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:51:39,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:51:39,187 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand 7 states. [2020-08-21 18:51:39,546 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:40,960 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:41,486 INFO L93 Difference]: Finished difference Result 367 states and 456 transitions. [2020-08-21 18:51:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:51:41,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-21 18:51:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:41,491 INFO L225 Difference]: With dead ends: 367 [2020-08-21 18:51:41,491 INFO L226 Difference]: Without dead ends: 264 [2020-08-21 18:51:41,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:51:41,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-21 18:51:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 218. [2020-08-21 18:51:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 18:51:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2020-08-21 18:51:41,542 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 78 [2020-08-21 18:51:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:41,543 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2020-08-21 18:51:41,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:51:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2020-08-21 18:51:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:51:41,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:41,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:41,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:51:41,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:41,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:41,546 INFO L82 PathProgramCache]: Analyzing trace with hash 462053503, now seen corresponding path program 1 times [2020-08-21 18:51:41,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:41,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363989918] [2020-08-21 18:51:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,831 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:51:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:51:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:51:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:51:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:51:41,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363989918] [2020-08-21 18:51:41,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:41,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:41,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583781380] [2020-08-21 18:51:41,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:41,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:41,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:41,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:41,947 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand 9 states. [2020-08-21 18:51:42,319 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:43,027 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:43,650 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:43,944 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:44,434 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:44,655 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:45,224 INFO L93 Difference]: Finished difference Result 453 states and 550 transitions. [2020-08-21 18:51:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:51:45,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 18:51:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:45,229 INFO L225 Difference]: With dead ends: 453 [2020-08-21 18:51:45,229 INFO L226 Difference]: Without dead ends: 263 [2020-08-21 18:51:45,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:51:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-21 18:51:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 217. [2020-08-21 18:51:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-08-21 18:51:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2020-08-21 18:51:45,274 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 92 [2020-08-21 18:51:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:45,275 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2020-08-21 18:51:45,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2020-08-21 18:51:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:51:45,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:45,277 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] [2020-08-21 18:51:45,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:51:45,277 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:45,277 INFO L82 PathProgramCache]: Analyzing trace with hash -440444759, now seen corresponding path program 1 times [2020-08-21 18:51:45,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:45,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353171420] [2020-08-21 18:51:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,555 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:51:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:51:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:51:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:51:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:45,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353171420] [2020-08-21 18:51:45,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:45,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:45,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161683490] [2020-08-21 18:51:45,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:45,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:45,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:45,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:45,677 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand 9 states. [2020-08-21 18:51:46,676 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:46,902 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:51:47,146 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:47,386 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:48,058 INFO L93 Difference]: Finished difference Result 451 states and 544 transitions. [2020-08-21 18:51:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:51:48,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 18:51:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:48,061 INFO L225 Difference]: With dead ends: 451 [2020-08-21 18:51:48,061 INFO L226 Difference]: Without dead ends: 262 [2020-08-21 18:51:48,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:51:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-21 18:51:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 222. [2020-08-21 18:51:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-21 18:51:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 251 transitions. [2020-08-21 18:51:48,102 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 251 transitions. Word has length 93 [2020-08-21 18:51:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:48,102 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 251 transitions. [2020-08-21 18:51:48,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 251 transitions. [2020-08-21 18:51:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:51:48,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:48,104 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] [2020-08-21 18:51:48,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:51:48,105 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash 261155115, now seen corresponding path program 1 times [2020-08-21 18:51:48,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:48,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328535089] [2020-08-21 18:51:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,365 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:51:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:51:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:51:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:51:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:48,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328535089] [2020-08-21 18:51:48,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:48,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:51:48,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490218466] [2020-08-21 18:51:48,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:51:48,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:51:48,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:51:48,529 INFO L87 Difference]: Start difference. First operand 222 states and 251 transitions. Second operand 11 states. [2020-08-21 18:51:48,986 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:49,231 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:49,491 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:50,207 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:50,462 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:50,712 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:51,542 INFO L93 Difference]: Finished difference Result 463 states and 564 transitions. [2020-08-21 18:51:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:51:51,548 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 18:51:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:51,552 INFO L225 Difference]: With dead ends: 463 [2020-08-21 18:51:51,552 INFO L226 Difference]: Without dead ends: 269 [2020-08-21 18:51:51,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:51:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-21 18:51:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-21 18:51:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-21 18:51:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2020-08-21 18:51:51,614 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 93 [2020-08-21 18:51:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:51,615 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2020-08-21 18:51:51,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:51:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2020-08-21 18:51:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:51:51,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:51,617 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] [2020-08-21 18:51:51,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:51:51,617 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1986636012, now seen corresponding path program 1 times [2020-08-21 18:51:51,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:51,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372571696] [2020-08-21 18:51:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,889 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:51,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:51:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:51:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:51:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:51:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:52,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372571696] [2020-08-21 18:51:52,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:52,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:51:52,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082006464] [2020-08-21 18:51:52,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:51:52,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:52,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:51:52,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:51:52,021 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand 7 states. [2020-08-21 18:51:52,346 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:52,870 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:54,611 INFO L93 Difference]: Finished difference Result 645 states and 802 transitions. [2020-08-21 18:51:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:51:54,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 18:51:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:54,616 INFO L225 Difference]: With dead ends: 645 [2020-08-21 18:51:54,616 INFO L226 Difference]: Without dead ends: 447 [2020-08-21 18:51:54,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:51:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-08-21 18:51:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 405. [2020-08-21 18:51:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-08-21 18:51:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 471 transitions. [2020-08-21 18:51:54,690 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 471 transitions. Word has length 93 [2020-08-21 18:51:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:54,691 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 471 transitions. [2020-08-21 18:51:54,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:51:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 471 transitions. [2020-08-21 18:51:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 18:51:54,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:54,693 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] [2020-08-21 18:51:54,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:51:54,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:54,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1429929390, now seen corresponding path program 1 times [2020-08-21 18:51:54,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:54,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167159565] [2020-08-21 18:51:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,004 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:51:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:51:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 18:51:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 18:51:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:51:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:55,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167159565] [2020-08-21 18:51:55,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:55,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:51:55,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855147386] [2020-08-21 18:51:55,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:51:55,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:55,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:51:55,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:51:55,173 INFO L87 Difference]: Start difference. First operand 405 states and 471 transitions. Second operand 12 states. [2020-08-21 18:51:55,566 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:56,182 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:57,197 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:57,519 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:57,777 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:51:58,052 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:58,323 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:59,482 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:59,754 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:00,359 INFO L93 Difference]: Finished difference Result 1123 states and 1390 transitions. [2020-08-21 18:52:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:52:00,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 18:52:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:00,366 INFO L225 Difference]: With dead ends: 1123 [2020-08-21 18:52:00,367 INFO L226 Difference]: Without dead ends: 820 [2020-08-21 18:52:00,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:52:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-21 18:52:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 698. [2020-08-21 18:52:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-08-21 18:52:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 804 transitions. [2020-08-21 18:52:00,519 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 804 transitions. Word has length 97 [2020-08-21 18:52:00,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:00,520 INFO L479 AbstractCegarLoop]: Abstraction has 698 states and 804 transitions. [2020-08-21 18:52:00,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:52:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 804 transitions. [2020-08-21 18:52:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 18:52:00,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:00,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:00,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:52:00,525 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1557984819, now seen corresponding path program 1 times [2020-08-21 18:52:00,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:00,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41026281] [2020-08-21 18:52:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,880 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:52:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 18:52:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 18:52:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 18:52:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 18:52:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 18:52:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:52:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41026281] [2020-08-21 18:52:01,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:01,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:52:01,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698377201] [2020-08-21 18:52:01,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:52:01,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:52:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:52:01,263 INFO L87 Difference]: Start difference. First operand 698 states and 804 transitions. Second operand 16 states. [2020-08-21 18:52:01,991 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:02,359 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:02,648 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:02,890 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:03,518 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:03,774 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:04,490 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:04,822 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:05,659 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:05,913 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:06,172 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:06,462 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:06,971 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:07,362 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:07,699 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:08,264 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:08,524 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:09,025 INFO L93 Difference]: Finished difference Result 1539 states and 1827 transitions. [2020-08-21 18:52:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 18:52:09,026 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 18:52:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:09,032 INFO L225 Difference]: With dead ends: 1539 [2020-08-21 18:52:09,032 INFO L226 Difference]: Without dead ends: 939 [2020-08-21 18:52:09,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 18:52:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-21 18:52:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 846. [2020-08-21 18:52:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-21 18:52:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 982 transitions. [2020-08-21 18:52:09,179 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 982 transitions. Word has length 157 [2020-08-21 18:52:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:09,179 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 982 transitions. [2020-08-21 18:52:09,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:52:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 982 transitions. [2020-08-21 18:52:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-21 18:52:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:09,186 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:09,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:52:09,186 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:09,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:09,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2097362584, now seen corresponding path program 1 times [2020-08-21 18:52:09,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:09,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484130994] [2020-08-21 18:52:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,465 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:52:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:52:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 18:52:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:52:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-21 18:52:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:52:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 18:52:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-21 18:52:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 18:52:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-21 18:52:09,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484130994] [2020-08-21 18:52:09,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:09,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:52:09,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526207180] [2020-08-21 18:52:09,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:52:09,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:09,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:52:09,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:52:09,943 INFO L87 Difference]: Start difference. First operand 846 states and 982 transitions. Second operand 15 states. [2020-08-21 18:52:11,877 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:12,152 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:12,385 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:12,617 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:13,907 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:14,538 INFO L93 Difference]: Finished difference Result 2234 states and 2701 transitions. [2020-08-21 18:52:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:52:14,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-21 18:52:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:14,547 INFO L225 Difference]: With dead ends: 2234 [2020-08-21 18:52:14,548 INFO L226 Difference]: Without dead ends: 1321 [2020-08-21 18:52:14,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 18:52:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-08-21 18:52:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1119. [2020-08-21 18:52:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-08-21 18:52:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1329 transitions. [2020-08-21 18:52:14,748 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1329 transitions. Word has length 277 [2020-08-21 18:52:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:14,749 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1329 transitions. [2020-08-21 18:52:14,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:52:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1329 transitions. [2020-08-21 18:52:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 18:52:14,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:14,754 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:14,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:52:14,754 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash -924921395, now seen corresponding path program 1 times [2020-08-21 18:52:14,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:14,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676117787] [2020-08-21 18:52:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,072 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:52:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:52:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:52:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 18:52:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:52:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 18:52:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 18:52:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 18:52:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 18:52:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:52:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 91 proven. 36 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-08-21 18:52:15,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676117787] [2020-08-21 18:52:15,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:15,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:52:15,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577250248] [2020-08-21 18:52:15,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:52:15,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:15,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:52:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:52:15,498 INFO L87 Difference]: Start difference. First operand 1119 states and 1329 transitions. Second operand 16 states. [2020-08-21 18:52:15,957 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:16,299 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:16,588 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:16,835 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:17,535 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:18,320 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:18,691 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:18,960 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:19,635 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:20,454 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:20,710 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:21,258 INFO L93 Difference]: Finished difference Result 2119 states and 2555 transitions. [2020-08-21 18:52:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:52:21,259 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 18:52:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:21,266 INFO L225 Difference]: With dead ends: 2119 [2020-08-21 18:52:21,266 INFO L226 Difference]: Without dead ends: 1121 [2020-08-21 18:52:21,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 18:52:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-08-21 18:52:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1071. [2020-08-21 18:52:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-21 18:52:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1255 transitions. [2020-08-21 18:52:21,547 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1255 transitions. Word has length 283 [2020-08-21 18:52:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:21,548 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1255 transitions. [2020-08-21 18:52:21,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:52:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1255 transitions. [2020-08-21 18:52:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-21 18:52:21,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:21,553 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:21,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:52:21,554 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1544148796, now seen corresponding path program 1 times [2020-08-21 18:52:21,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:21,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889093210] [2020-08-21 18:52:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,860 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:52:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:52:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:52:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:52:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-21 18:52:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:52:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:52:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-21 18:52:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 18:52:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-21 18:52:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-21 18:52:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-08-21 18:52:22,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889093210] [2020-08-21 18:52:22,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:22,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:52:22,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670216684] [2020-08-21 18:52:22,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:52:22,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:22,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:52:22,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:52:22,236 INFO L87 Difference]: Start difference. First operand 1071 states and 1255 transitions. Second operand 14 states. [2020-08-21 18:52:22,675 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:23,488 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:25,839 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:26,121 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:26,383 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:26,642 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:52:26,946 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:27,207 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:52:27,677 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-21 18:52:27,939 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:52:28,237 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:52:28,596 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 18:52:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:29,522 INFO L93 Difference]: Finished difference Result 3085 states and 3690 transitions. [2020-08-21 18:52:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 18:52:29,532 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 280 [2020-08-21 18:52:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted.