/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:56:07,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:56:07,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:56:07,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:56:07,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:56:07,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:56:07,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:56:07,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:56:07,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:56:07,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:56:07,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:56:07,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:56:07,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:56:07,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:56:07,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:56:07,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:56:07,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:56:07,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:56:07,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:56:07,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:56:07,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:56:07,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:56:07,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:56:07,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:56:07,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:56:07,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:56:07,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:56:07,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:56:07,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:56:07,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:56:07,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:56:07,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:56:07,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:56:07,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:56:07,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:56:07,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:56:07,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:56:07,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:56:07,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:56:07,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:56:07,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:56:07,532 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 13:56:07,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:56:07,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:56:07,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:56:07,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:56:07,556 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:56:07,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:56:07,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:56:07,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:56:07,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:56:07,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:56:07,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:56:07,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:56:07,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:56:07,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:56:07,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:56:07,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:56:07,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:56:07,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:56:07,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:56:07,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:56:07,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:56:07,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:56:07,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:56:07,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:56:07,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:56:07,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:56:07,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:56:07,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:56:07,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:56:07,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> log-additional-information=true; [2020-08-21 13:56:07,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:56:07,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:56:07,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:56:07,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:56:07,844 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:56:07,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-21 13:56:07,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4f7e7c84/dd16128628444d15a60dcbd1085f615b/FLAGa3e43fc1f [2020-08-21 13:56:08,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:56:08,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-21 13:56:08,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4f7e7c84/dd16128628444d15a60dcbd1085f615b/FLAGa3e43fc1f [2020-08-21 13:56:08,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4f7e7c84/dd16128628444d15a60dcbd1085f615b [2020-08-21 13:56:08,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:56:08,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:56:08,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:56:08,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:56:08,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:56:08,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:56:08" (1/1) ... [2020-08-21 13:56:08,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a9d3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:08, skipping insertion in model container [2020-08-21 13:56:08,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:56:08" (1/1) ... [2020-08-21 13:56:08,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:56:08,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:56:09,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:56:09,091 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:56:09,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:56:09,329 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:56:09,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09 WrapperNode [2020-08-21 13:56:09,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:56:09,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:56:09,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:56:09,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:56:09,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (1/1) ... [2020-08-21 13:56:09,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:56:09,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:56:09,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:56:09,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:56:09,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (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 13:56:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:56:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:56:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:56:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:56:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:56:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:56:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:56:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:56:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:56:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:56:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:56:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:56:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:56:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:56:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:56:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:56:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:56:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:56:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:56:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 13:56:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:56:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:56:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:56:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:56:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:56:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:56:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:56:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:56:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:56:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:56:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:56:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:56:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:56:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:56:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:56:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:56:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:56:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:56:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:56:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:56:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:56:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:56:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:56:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:56:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:56:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:56:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:56:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:56:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:56:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:56:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:56:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:56:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:56:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:56:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:56:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:56:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:56:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:56:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:56:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:56:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:56:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 13:56:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:56:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:56:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:56:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:56:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:56:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:56:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:56:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:56:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:56:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:56:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:56:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:56:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:56:10,557 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:56:10,557 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:56:10,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:56:10 BoogieIcfgContainer [2020-08-21 13:56:10,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:56:10,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:56:10,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:56:10,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:56:10,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:56:08" (1/3) ... [2020-08-21 13:56:10,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd8724f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:56:10, skipping insertion in model container [2020-08-21 13:56:10,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:56:09" (2/3) ... [2020-08-21 13:56:10,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd8724f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:56:10, skipping insertion in model container [2020-08-21 13:56:10,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:56:10" (3/3) ... [2020-08-21 13:56:10,571 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-21 13:56:10,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:56:10,588 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:56:10,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:56:10,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:56:10,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:56:10,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:56:10,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:56:10,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:56:10,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:56:10,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:56:10,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:56:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-21 13:56:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:56:10,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:10,661 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 13:56:10,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:10,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-21 13:56:10,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:10,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619800479] [2020-08-21 13:56:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,304 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:11,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:56:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:56:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:11,407 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 13:56:11,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619800479] [2020-08-21 13:56:11,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:11,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:56:11,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126022187] [2020-08-21 13:56:11,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:56:11,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:11,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:56:11,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:56:11,433 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-21 13:56:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:12,545 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-21 13:56:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:56:12,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 13:56:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:12,562 INFO L225 Difference]: With dead ends: 343 [2020-08-21 13:56:12,563 INFO L226 Difference]: Without dead ends: 190 [2020-08-21 13:56:12,568 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 13:56:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-21 13:56:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-21 13:56:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-21 13:56:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-21 13:56:12,684 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-21 13:56:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:12,685 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-21 13:56:12,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:56:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-21 13:56:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:56:12,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:12,689 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 13:56:12,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:56:12,690 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:12,690 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-21 13:56:12,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:12,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779139405] [2020-08-21 13:56:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,060 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:56:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:56:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:13,115 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 13:56:13,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779139405] [2020-08-21 13:56:13,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:13,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:56:13,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271614153] [2020-08-21 13:56:13,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:56:13,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:13,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:56:13,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:56:13,119 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-21 13:56:13,571 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:14,601 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-21 13:56:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:56:14,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 13:56:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:14,606 INFO L225 Difference]: With dead ends: 282 [2020-08-21 13:56:14,606 INFO L226 Difference]: Without dead ends: 180 [2020-08-21 13:56:14,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:56:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-21 13:56:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-21 13:56:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-21 13:56:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-21 13:56:14,650 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-21 13:56:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:14,651 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-21 13:56:14,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:56:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-21 13:56:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 13:56:14,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:14,654 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 13:56:14,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:56:14,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-21 13:56:14,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:14,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127617399] [2020-08-21 13:56:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:14,965 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:56:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:56:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:15,066 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 13:56:15,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127617399] [2020-08-21 13:56:15,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:15,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:56:15,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060526326] [2020-08-21 13:56:15,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:56:15,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:15,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:56:15,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:56:15,069 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-21 13:56:15,459 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:15,762 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:15,998 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:16,225 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:16,968 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:19,167 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-21 13:56:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:56:19,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 13:56:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:19,173 INFO L225 Difference]: With dead ends: 487 [2020-08-21 13:56:19,173 INFO L226 Difference]: Without dead ends: 370 [2020-08-21 13:56:19,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:56:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-21 13:56:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-21 13:56:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 13:56:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-21 13:56:19,255 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-21 13:56:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:19,255 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-21 13:56:19,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:56:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-21 13:56:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 13:56:19,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:19,259 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 13:56:19,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:56:19,259 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-21 13:56:19,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:19,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168709557] [2020-08-21 13:56:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,559 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:56:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:56:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:56:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,679 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 13:56:19,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168709557] [2020-08-21 13:56:19,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:19,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:56:19,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265123038] [2020-08-21 13:56:19,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:56:19,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:19,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:56:19,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:56:19,682 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-21 13:56:20,071 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:21,007 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:21,429 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:21,741 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:22,004 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:23,621 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-21 13:56:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:56:23,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 13:56:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:23,629 INFO L225 Difference]: With dead ends: 973 [2020-08-21 13:56:23,629 INFO L226 Difference]: Without dead ends: 696 [2020-08-21 13:56:23,631 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 13:56:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-21 13:56:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-21 13:56:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-21 13:56:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-21 13:56:23,761 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-21 13:56:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:23,762 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-21 13:56:23,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:56:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-21 13:56:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 13:56:23,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:23,767 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 13:56:23,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:56:23,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:23,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-21 13:56:23,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:23,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678934462] [2020-08-21 13:56:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,056 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:56:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:56:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:56:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,178 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 13:56:24,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678934462] [2020-08-21 13:56:24,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:24,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:56:24,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624218957] [2020-08-21 13:56:24,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:56:24,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:24,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:56:24,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:56:24,183 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-21 13:56:24,618 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:25,576 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:25,847 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:26,109 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:26,826 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:28,385 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-21 13:56:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 13:56:28,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 13:56:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:28,406 INFO L225 Difference]: With dead ends: 1531 [2020-08-21 13:56:28,407 INFO L226 Difference]: Without dead ends: 1001 [2020-08-21 13:56:28,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:56:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-21 13:56:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-21 13:56:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-21 13:56:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-21 13:56:28,616 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-21 13:56:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:28,617 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-21 13:56:28,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:56:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-21 13:56:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 13:56:28,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:28,621 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, 1] [2020-08-21 13:56:28,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:56:28,622 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-21 13:56:28,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:28,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674828893] [2020-08-21 13:56:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,910 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:28,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:56:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 13:56:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:56:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,047 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 13:56:29,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674828893] [2020-08-21 13:56:29,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:29,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:56:29,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803996632] [2020-08-21 13:56:29,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:56:29,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:56:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:56:29,049 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-21 13:56:30,192 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:30,453 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:56:30,711 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:30,949 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:32,239 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-21 13:56:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:56:32,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 13:56:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:32,247 INFO L225 Difference]: With dead ends: 1854 [2020-08-21 13:56:32,247 INFO L226 Difference]: Without dead ends: 1077 [2020-08-21 13:56:32,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:56:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-21 13:56:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-21 13:56:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-21 13:56:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-21 13:56:32,416 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-21 13:56:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:32,416 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-21 13:56:32,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:56:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-21 13:56:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 13:56:32,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:32,421 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, 1] [2020-08-21 13:56:32,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:56:32,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-21 13:56:32,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:32,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861603908] [2020-08-21 13:56:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,701 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:56:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 13:56:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:56:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,887 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 13:56:32,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861603908] [2020-08-21 13:56:32,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:32,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:56:32,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007751031] [2020-08-21 13:56:32,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:56:32,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:32,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:56:32,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:56:32,900 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-21 13:56:33,442 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:33,705 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:33,936 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:34,720 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:34,962 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:35,210 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:36,681 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-21 13:56:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:56:36,682 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-21 13:56:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:36,690 INFO L225 Difference]: With dead ends: 1908 [2020-08-21 13:56:36,691 INFO L226 Difference]: Without dead ends: 1105 [2020-08-21 13:56:36,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 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 13:56:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-21 13:56:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-21 13:56:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 13:56:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-21 13:56:36,858 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-21 13:56:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:36,858 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-21 13:56:36,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:56:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-21 13:56:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 13:56:36,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:36,861 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, 1] [2020-08-21 13:56:36,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:56:36,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:36,862 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-21 13:56:36,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:36,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926571307] [2020-08-21 13:56:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,094 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:56:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 13:56:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:56:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,233 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 13:56:37,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926571307] [2020-08-21 13:56:37,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:37,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:56:37,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537954340] [2020-08-21 13:56:37,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:56:37,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:37,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:56:37,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:56:37,236 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-21 13:56:37,644 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:38,155 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:40,926 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-21 13:56:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:56:40,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 13:56:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:40,945 INFO L225 Difference]: With dead ends: 2850 [2020-08-21 13:56:40,945 INFO L226 Difference]: Without dead ends: 2031 [2020-08-21 13:56:40,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 13:56:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-21 13:56:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-21 13:56:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 13:56:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-21 13:56:41,335 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-21 13:56:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:41,336 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-21 13:56:41,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:56:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-21 13:56:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 13:56:41,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:41,341 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, 1, 1, 1, 1, 1] [2020-08-21 13:56:41,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:56:41,341 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-21 13:56:41,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:41,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161328285] [2020-08-21 13:56:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,598 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:56:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:56:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 13:56:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:41,699 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 13:56:41,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161328285] [2020-08-21 13:56:41,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:41,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:56:41,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396773457] [2020-08-21 13:56:41,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:56:41,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:41,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:56:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:56:41,701 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-21 13:56:42,092 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:44,942 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-21 13:56:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 13:56:44,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-21 13:56:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:44,966 INFO L225 Difference]: With dead ends: 3406 [2020-08-21 13:56:44,966 INFO L226 Difference]: Without dead ends: 3403 [2020-08-21 13:56:44,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:56:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-21 13:56:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-21 13:56:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-21 13:56:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-21 13:56:45,613 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-21 13:56:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:45,615 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-21 13:56:45,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:56:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-21 13:56:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-21 13:56:45,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:45,627 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, 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] [2020-08-21 13:56:45,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:56:45,627 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1055495760, now seen corresponding path program 1 times [2020-08-21 13:56:45,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:45,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494640593] [2020-08-21 13:56:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,919 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:56:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:56:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 13:56:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 13:56:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 13:56:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 13:56:46,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494640593] [2020-08-21 13:56:46,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:56:46,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:56:46,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235719789] [2020-08-21 13:56:46,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:56:46,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:46,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:56:46,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:56:46,147 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 13 states. [2020-08-21 13:56:46,832 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:47,163 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:47,619 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:49,067 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:50,576 INFO L93 Difference]: Finished difference Result 5316 states and 6984 transitions. [2020-08-21 13:56:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 13:56:50,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-21 13:56:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:50,593 INFO L225 Difference]: With dead ends: 5316 [2020-08-21 13:56:50,594 INFO L226 Difference]: Without dead ends: 2866 [2020-08-21 13:56:50,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 13:56:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2020-08-21 13:56:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2558. [2020-08-21 13:56:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2558 states. [2020-08-21 13:56:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3019 transitions. [2020-08-21 13:56:51,144 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3019 transitions. Word has length 160 [2020-08-21 13:56:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:51,144 INFO L479 AbstractCegarLoop]: Abstraction has 2558 states and 3019 transitions. [2020-08-21 13:56:51,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:56:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3019 transitions. [2020-08-21 13:56:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-21 13:56:51,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:51,152 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, 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 13:56:51,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:56:51,153 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-21 13:56:51,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:51,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635895895] [2020-08-21 13:56:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,431 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:56:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:56:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 13:56:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 13:56:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-21 13:56:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 13:56:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-21 13:56:51,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635895895] [2020-08-21 13:56:51,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:56:51,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:56:51,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215675168] [2020-08-21 13:56:51,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:56:51,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:51,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:56:51,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:56:51,800 INFO L87 Difference]: Start difference. First operand 2558 states and 3019 transitions. Second operand 10 states. [2020-08-21 13:56:52,844 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:54,810 INFO L93 Difference]: Finished difference Result 3168 states and 3876 transitions. [2020-08-21 13:56:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 13:56:54,811 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-21 13:56:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:54,818 INFO L225 Difference]: With dead ends: 3168 [2020-08-21 13:56:54,818 INFO L226 Difference]: Without dead ends: 1113 [2020-08-21 13:56:54,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 13:56:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-21 13:56:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-21 13:56:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-21 13:56:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1150 transitions. [2020-08-21 13:56:55,003 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1150 transitions. Word has length 170 [2020-08-21 13:56:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:55,004 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1150 transitions. [2020-08-21 13:56:55,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:56:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1150 transitions. [2020-08-21 13:56:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-21 13:56:55,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:55,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:55,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:56:55,009 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-21 13:56:55,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:55,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496580045] [2020-08-21 13:56:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,296 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:56:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:56:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:56:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 13:56:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:56:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:56:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 13:56:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 13:56:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 13:56:55,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496580045] [2020-08-21 13:56:55,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:56:55,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 13:56:55,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380444576] [2020-08-21 13:56:55,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 13:56:55,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:55,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 13:56:55,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:56:55,601 INFO L87 Difference]: Start difference. First operand 990 states and 1150 transitions. Second operand 19 states. [2020-08-21 13:56:56,566 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:56,885 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:56:57,141 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:56:57,372 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:56:58,063 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:59,147 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:59,509 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:00,776 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:01,023 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:01,350 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:01,590 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:01,837 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:02,085 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:02,344 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:02,589 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:57:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:57:03,630 INFO L93 Difference]: Finished difference Result 1901 states and 2276 transitions. [2020-08-21 13:57:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 13:57:03,631 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-08-21 13:57:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:57:03,632 INFO L225 Difference]: With dead ends: 1901 [2020-08-21 13:57:03,632 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:57:03,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 13:57:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:57:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:57:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:57:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:57:03,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-08-21 13:57:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:57:03,639 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:57:03,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 13:57:03,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:57:03,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:57:03,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:57:03,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.