/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:07:10,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:07:10,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:07:10,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:07:10,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:07:10,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:07:10,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:07:10,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:07:10,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:07:10,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:07:10,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:07:10,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:07:10,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:07:10,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:07:10,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:07:10,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:07:10,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:07:10,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:07:10,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:07:10,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:07:10,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:07:10,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:07:10,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:07:10,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:07:10,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:07:10,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:07:10,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:07:10,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:07:10,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:07:10,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:07:10,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:07:10,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:07:10,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:07:10,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:07:10,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:07:10,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:07:10,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:07:10,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:07:10,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:07:10,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:07:10,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:07:10,441 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 13:07:10,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:07:10,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:07:10,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:07:10,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:07:10,469 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:07:10,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:07:10,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:07:10,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:07:10,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:07:10,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:07:10,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:07:10,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:07:10,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:07:10,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:07:10,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:07:10,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:07:10,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:07:10,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:07:10,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:07:10,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:07:10,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:07:10,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:07:10,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:07:10,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:07:10,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:07:10,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:07:10,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:07:10,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:07:10,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:07:10,473 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 -> false [2020-08-21 13:07:10,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:07:10,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:07:10,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:07:10,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:07:10,795 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:07:10,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-21 13:07:10,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d6a34dc7/67e729ba07cb40d9a17577b99d416c5b/FLAGf3778d380 [2020-08-21 13:07:11,348 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:07:11,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-21 13:07:11,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d6a34dc7/67e729ba07cb40d9a17577b99d416c5b/FLAGf3778d380 [2020-08-21 13:07:11,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d6a34dc7/67e729ba07cb40d9a17577b99d416c5b [2020-08-21 13:07:11,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:07:11,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:07:11,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:07:11,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:07:11,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:07:11,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:07:11" (1/1) ... [2020-08-21 13:07:11,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9a5625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:11, skipping insertion in model container [2020-08-21 13:07:11,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:07:11" (1/1) ... [2020-08-21 13:07:11,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:07:11,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:07:12,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:07:12,140 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:07:12,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:07:12,265 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:07:12,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12 WrapperNode [2020-08-21 13:07:12,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:07:12,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:07:12,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:07:12,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:07:12,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (1/1) ... [2020-08-21 13:07:12,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:07:12,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:07:12,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:07:12,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:07:12,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (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 13:07:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:07:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:07:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:07:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:07:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:07:12,449 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:07:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:07:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:07:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:07:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:07:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:07:12,451 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:07:12,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:07:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:07:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:07:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:07:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:07:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:07:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:07:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:07:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:07:12,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:07:12,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:07:12,454 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:07:12,454 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:07:12,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:07:12,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:07:12,456 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:07:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:07:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:07:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:07:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:07:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:07:12,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:07:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:07:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:07:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:07:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:07:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:07:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:07:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:07:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:07:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:07:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:07:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:07:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:07:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:07:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:07:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:07:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:07:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:07:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:07:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:07:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:07:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:07:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:07:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:07:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:07:13,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:07:13,487 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:07:13,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:07:13 BoogieIcfgContainer [2020-08-21 13:07:13,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:07:13,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:07:13,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:07:13,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:07:13,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:07:11" (1/3) ... [2020-08-21 13:07:13,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdce73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:07:13, skipping insertion in model container [2020-08-21 13:07:13,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:12" (2/3) ... [2020-08-21 13:07:13,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdce73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:07:13, skipping insertion in model container [2020-08-21 13:07:13,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:07:13" (3/3) ... [2020-08-21 13:07:13,501 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-21 13:07:13,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:07:13,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:07:13,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:07:13,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:07:13,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:07:13,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:07:13,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:07:13,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:07:13,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:07:13,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:07:13,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:07:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-21 13:07:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:07:13,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:13,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:13,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:13,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:13,605 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-21 13:07:13,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:13,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813081352] [2020-08-21 13:07:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,287 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:14,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:07:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:07:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:14,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813081352] [2020-08-21 13:07:14,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:14,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:07:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141646135] [2020-08-21 13:07:14,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:07:14,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:07:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:07:14,423 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-21 13:07:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:15,586 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-21 13:07:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:07:15,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 13:07:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:15,604 INFO L225 Difference]: With dead ends: 301 [2020-08-21 13:07:15,604 INFO L226 Difference]: Without dead ends: 168 [2020-08-21 13:07:15,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:07:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-21 13:07:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-21 13:07:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 13:07:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-21 13:07:15,705 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-21 13:07:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:15,705 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-21 13:07:15,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:07:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-21 13:07:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:07:15,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:15,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:15,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:07:15,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:15,711 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-21 13:07:15,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:15,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130139916] [2020-08-21 13:07:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,076 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:07:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:16,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130139916] [2020-08-21 13:07:16,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:16,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:07:16,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879169837] [2020-08-21 13:07:16,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:07:16,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:16,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:07:16,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:07:16,134 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-21 13:07:16,581 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:17,547 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-21 13:07:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:07:17,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 13:07:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:17,552 INFO L225 Difference]: With dead ends: 240 [2020-08-21 13:07:17,552 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 13:07:17,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:07:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 13:07:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-21 13:07:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 13:07:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-21 13:07:17,596 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-21 13:07:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:17,596 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-21 13:07:17,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:07:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-21 13:07:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 13:07:17,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:17,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:17,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:07:17,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:17,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-21 13:07:17,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:17,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518157161] [2020-08-21 13:07:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:17,959 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:17,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:07:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:07:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:18,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518157161] [2020-08-21 13:07:18,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:18,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:07:18,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009881190] [2020-08-21 13:07:18,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:07:18,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:18,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:07:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:07:18,123 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-21 13:07:18,610 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:18,934 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:19,214 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:19,456 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:20,229 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:22,023 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-21 13:07:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:07:22,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 13:07:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:22,032 INFO L225 Difference]: With dead ends: 423 [2020-08-21 13:07:22,033 INFO L226 Difference]: Without dead ends: 326 [2020-08-21 13:07:22,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:07:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-21 13:07:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-21 13:07:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-21 13:07:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-21 13:07:22,149 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-21 13:07:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:22,150 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-21 13:07:22,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:07:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-21 13:07:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 13:07:22,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:22,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:22,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:07:22,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-21 13:07:22,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:22,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361061719] [2020-08-21 13:07:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,477 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:07:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:07:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:07:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:22,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361061719] [2020-08-21 13:07:22,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:22,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:07:22,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091034804] [2020-08-21 13:07:22,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:07:22,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:22,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:07:22,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:07:22,612 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-21 13:07:23,018 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:24,003 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:24,400 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:24,705 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:25,000 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:26,211 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-21 13:07:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:07:26,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 13:07:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:26,219 INFO L225 Difference]: With dead ends: 845 [2020-08-21 13:07:26,219 INFO L226 Difference]: Without dead ends: 608 [2020-08-21 13:07:26,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 13:07:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-21 13:07:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-21 13:07:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 13:07:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-21 13:07:26,334 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-21 13:07:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:26,334 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-21 13:07:26,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:07:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-21 13:07:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 13:07:26,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:26,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:26,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:07:26,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:26,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-21 13:07:26,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:26,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979908180] [2020-08-21 13:07:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,600 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:07:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:07:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:07:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:26,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979908180] [2020-08-21 13:07:26,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:26,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:07:26,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157745826] [2020-08-21 13:07:26,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:07:26,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:07:26,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:07:26,754 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-21 13:07:27,126 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:28,139 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:28,431 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:28,731 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:29,386 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:30,573 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-21 13:07:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 13:07:30,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 13:07:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:30,588 INFO L225 Difference]: With dead ends: 1339 [2020-08-21 13:07:30,589 INFO L226 Difference]: Without dead ends: 889 [2020-08-21 13:07:30,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:07:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-21 13:07:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-21 13:07:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-21 13:07:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-21 13:07:30,755 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-21 13:07:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:30,755 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-21 13:07:30,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:07:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-21 13:07:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:07:30,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:30,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:30,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:07:30,759 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:30,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-21 13:07:30,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:30,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518855078] [2020-08-21 13:07:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,078 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:07:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:07:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:31,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518855078] [2020-08-21 13:07:31,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:31,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:07:31,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160533963] [2020-08-21 13:07:31,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:07:31,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:31,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:07:31,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:07:31,233 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-21 13:07:31,823 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:32,891 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:33,151 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:07:33,448 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:33,725 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:35,871 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-21 13:07:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:07:35,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 13:07:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:35,886 INFO L225 Difference]: With dead ends: 2350 [2020-08-21 13:07:35,886 INFO L226 Difference]: Without dead ends: 1685 [2020-08-21 13:07:35,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-21 13:07:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-21 13:07:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-21 13:07:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-21 13:07:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-21 13:07:36,303 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-21 13:07:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:36,304 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-21 13:07:36,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:07:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-21 13:07:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:07:36,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:36,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:36,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:07:36,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-21 13:07:36,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:36,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495078869] [2020-08-21 13:07:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,617 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:07:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:07:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:36,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495078869] [2020-08-21 13:07:36,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:36,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:07:36,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211676164] [2020-08-21 13:07:36,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:07:36,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:36,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:07:36,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:07:36,780 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-21 13:07:38,070 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:38,365 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:07:38,626 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:38,890 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:40,127 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-21 13:07:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:07:40,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 13:07:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:40,139 INFO L225 Difference]: With dead ends: 2904 [2020-08-21 13:07:40,139 INFO L226 Difference]: Without dead ends: 1685 [2020-08-21 13:07:40,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:07:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-21 13:07:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-21 13:07:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-21 13:07:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-21 13:07:40,397 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-21 13:07:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:40,399 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-21 13:07:40,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:07:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-21 13:07:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:07:40,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:40,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:40,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:07:40,403 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-21 13:07:40,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:40,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226187961] [2020-08-21 13:07:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,675 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:07:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:07:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:40,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226187961] [2020-08-21 13:07:40,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:40,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:07:40,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848482289] [2020-08-21 13:07:40,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:07:40,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:40,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:07:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:07:40,849 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-21 13:07:41,397 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:41,638 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:41,874 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:42,647 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:42,912 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:43,146 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:44,453 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-21 13:07:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:07:44,454 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-21 13:07:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:44,464 INFO L225 Difference]: With dead ends: 2600 [2020-08-21 13:07:44,464 INFO L226 Difference]: Without dead ends: 1341 [2020-08-21 13:07:44,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:07:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-21 13:07:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-21 13:07:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-21 13:07:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-21 13:07:44,670 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-21 13:07:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:44,670 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-21 13:07:44,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:07:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-21 13:07:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 13:07:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:44,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:44,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:07:44,674 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-21 13:07:44,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:44,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306225109] [2020-08-21 13:07:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:44,981 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:07:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:07:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:07:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 13:07:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 13:07:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:45,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306225109] [2020-08-21 13:07:45,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:45,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:07:45,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314308062] [2020-08-21 13:07:45,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:07:45,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:07:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:07:45,091 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-21 13:07:45,565 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:48,284 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-21 13:07:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 13:07:48,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-21 13:07:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:48,300 INFO L225 Difference]: With dead ends: 2130 [2020-08-21 13:07:48,300 INFO L226 Difference]: Without dead ends: 2127 [2020-08-21 13:07:48,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:07:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-21 13:07:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-21 13:07:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-21 13:07:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-21 13:07:48,710 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-21 13:07:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:48,713 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-21 13:07:48,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:07:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-21 13:07:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 13:07:48,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:48,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:48,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:07:48,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:48,723 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-21 13:07:48,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:48,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253428834] [2020-08-21 13:07:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,019 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:07:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:07:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:07:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:07:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:07:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 13:07:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:07:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:07:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 13:07:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 13:07:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 13:07:49,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253428834] [2020-08-21 13:07:49,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:07:49,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 13:07:49,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654523441] [2020-08-21 13:07:49,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 13:07:49,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:49,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 13:07:49,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:07:49,321 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-21 13:07:50,047 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:50,361 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:07:50,623 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:07:50,906 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:07:51,640 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:52,249 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:52,657 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:55,006 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:55,265 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:55,545 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:55,808 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:56,089 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:56,347 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:56,649 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:56,902 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:57,840 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-21 13:07:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 13:07:57,841 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-21 13:07:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:57,853 INFO L225 Difference]: With dead ends: 3563 [2020-08-21 13:07:57,854 INFO L226 Difference]: Without dead ends: 1939 [2020-08-21 13:07:57,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 13:07:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-21 13:07:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-21 13:07:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-21 13:07:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-21 13:07:58,221 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-21 13:07:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:58,221 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-21 13:07:58,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 13:07:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-21 13:07:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:07:58,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:58,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:58,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:07:58,230 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:58,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-21 13:07:58,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:58,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064495028] [2020-08-21 13:07:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,558 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:58,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:07:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:07:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:07:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:07:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:07:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 13:07:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:07:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 13:07:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 13:07:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 13:07:58,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064495028] [2020-08-21 13:07:58,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:07:58,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:07:58,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525358936] [2020-08-21 13:07:58,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:07:58,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:58,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:07:58,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:07:58,879 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-21 13:07:59,676 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:08:00,017 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:00,245 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:00,914 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:02,235 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:03,966 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-21 13:08:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-21 13:08:03,967 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-21 13:08:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:03,978 INFO L225 Difference]: With dead ends: 2988 [2020-08-21 13:08:03,978 INFO L226 Difference]: Without dead ends: 1734 [2020-08-21 13:08:03,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 13:08:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-21 13:08:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-21 13:08:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-21 13:08:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-21 13:08:04,292 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-21 13:08:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:04,293 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-21 13:08:04,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:08:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-21 13:08:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-21 13:08:04,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:08:04,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:04,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:08:04,300 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:08:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:08:04,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-21 13:08:04,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:08:04,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706643507] [2020-08-21 13:08:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:08:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,568 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:08:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:08:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:08:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:08:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:08:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:08:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:08:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:08:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:08:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:08:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:08:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:08:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 13:08:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 13:08:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 13:08:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 13:08:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-21 13:08:04,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706643507] [2020-08-21 13:08:04,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:08:04,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:08:04,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802522020] [2020-08-21 13:08:04,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:08:04,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:08:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:08:04,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:08:04,778 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-21 13:08:05,611 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:07,239 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-21 13:08:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 13:08:07,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-21 13:08:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:07,240 INFO L225 Difference]: With dead ends: 1918 [2020-08-21 13:08:07,240 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:08:07,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 13:08:07,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:08:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:08:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:08:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:08:07,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-21 13:08:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:07,246 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:08:07,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:08:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:08:07,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:08:07,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:08:07,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.