/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:22:23,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:22:23,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:22:23,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:22:23,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:22:23,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:22:23,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:22:23,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:22:23,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:22:23,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:22:23,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:22:23,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:22:23,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:22:23,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:22:23,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:22:23,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:22:23,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:22:23,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:22:23,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:22:23,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:22:23,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:22:23,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:22:23,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:22:23,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:22:23,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:22:23,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:22:23,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:22:23,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:22:23,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:22:23,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:22:23,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:22:23,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:22:23,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:22:23,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:22:23,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:22:23,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:22:23,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:22:23,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:22:23,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:22:23,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:22:23,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:22:23,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:22:23,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:22:23,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:22:23,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:22:23,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:22:23,493 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:22:23,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:22:23,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:22:23,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:22:23,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:22:23,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:22:23,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:22:23,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:22:23,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:22:23,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:22:23,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:22:23,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:22:23,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:22:23,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:22:23,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:22:23,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:22:23,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:22:23,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:23,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:22:23,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:22:23,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:22:23,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:22:23,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:22:23,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:22:23,828 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:22:23,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-18 10:22:23,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f35ee7b/1b26e15d3bc1432097ca33ec7b50eba7/FLAG7b208fd4d [2020-08-18 10:22:24,472 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:22:24,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-18 10:22:24,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f35ee7b/1b26e15d3bc1432097ca33ec7b50eba7/FLAG7b208fd4d [2020-08-18 10:22:24,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f35ee7b/1b26e15d3bc1432097ca33ec7b50eba7 [2020-08-18 10:22:24,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:22:24,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:22:24,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:24,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:22:24,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:22:24,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:24" (1/1) ... [2020-08-18 10:22:24,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:24, skipping insertion in model container [2020-08-18 10:22:24,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:24" (1/1) ... [2020-08-18 10:22:24,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:22:24,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:22:25,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:25,226 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:22:25,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:25,349 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:22:25,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25 WrapperNode [2020-08-18 10:22:25,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:25,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:22:25,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:22:25,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:22:25,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... [2020-08-18 10:22:25,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:22:25,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:22:25,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:22:25,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:22:25,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:22:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:22:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:22:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:22:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:22:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:22:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:22:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:22:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:22:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:22:25,515 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:22:25,515 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:22:25,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:22:25,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:22:25,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:22:25,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:22:25,516 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:22:25,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:22:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:22:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:22:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:22:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:22:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:22:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:22:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:22:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:22:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:22:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:22:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:22:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:22:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:22:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:22:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:22:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:22:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:22:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:22:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:22:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:22:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:22:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:22:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:22:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:22:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:22:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:22:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:22:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:22:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:22:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:22:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:22:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:22:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:22:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:22:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:22:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:22:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:22:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:22:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:22:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:22:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:22:25,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:22:26,627 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:22:26,627 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:22:26,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:26 BoogieIcfgContainer [2020-08-18 10:22:26,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:22:26,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:22:26,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:22:26,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:22:26,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:22:24" (1/3) ... [2020-08-18 10:22:26,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222153dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:26, skipping insertion in model container [2020-08-18 10:22:26,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:25" (2/3) ... [2020-08-18 10:22:26,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222153dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:26, skipping insertion in model container [2020-08-18 10:22:26,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:26" (3/3) ... [2020-08-18 10:22:26,641 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-18 10:22:26,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:22:26,660 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:22:26,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:22:26,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:22:26,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:22:26,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:22:26,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:22:26,703 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:22:26,703 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:22:26,703 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:22:26,703 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:22:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-18 10:22:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:22:26,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:26,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:26,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-18 10:22:26,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:26,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263714250] [2020-08-18 10:22:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,410 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:22:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:22:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:22:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:27,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263714250] [2020-08-18 10:22:27,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:27,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:22:27,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583276357] [2020-08-18 10:22:27,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:22:27,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:27,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:22:27,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:27,560 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-18 10:22:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:28,719 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-18 10:22:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:22:28,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:22:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:28,737 INFO L225 Difference]: With dead ends: 287 [2020-08-18 10:22:28,738 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 10:22:28,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 10:22:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 10:22:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 10:22:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-18 10:22:28,831 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-18 10:22:28,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:28,831 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-18 10:22:28,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:22:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-18 10:22:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:22:28,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:28,836 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] [2020-08-18 10:22:28,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:22:28,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:28,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-18 10:22:28,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:28,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731436022] [2020-08-18 10:22:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,190 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:22:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:22:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:29,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731436022] [2020-08-18 10:22:29,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:29,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:22:29,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682473582] [2020-08-18 10:22:29,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:22:29,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:29,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:22:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:22:29,279 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-18 10:22:29,714 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:30,497 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-18 10:22:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:22:30,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:22:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:30,503 INFO L225 Difference]: With dead ends: 220 [2020-08-18 10:22:30,503 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 10:22:30,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:22:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 10:22:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 10:22:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 10:22:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-18 10:22:30,540 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-18 10:22:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:30,540 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-18 10:22:30,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:22:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-18 10:22:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:22:30,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:30,543 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] [2020-08-18 10:22:30,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:22:30,544 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-18 10:22:30,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:30,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585310461] [2020-08-18 10:22:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,905 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:30,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:22:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:22:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:22:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:31,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585310461] [2020-08-18 10:22:31,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:31,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:31,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622667669] [2020-08-18 10:22:31,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:31,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:31,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:31,002 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-18 10:22:31,351 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:31,658 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:31,922 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:32,150 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:33,201 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-18 10:22:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:22:33,203 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 10:22:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:33,206 INFO L225 Difference]: With dead ends: 229 [2020-08-18 10:22:33,207 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 10:22:33,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:22:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 10:22:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 10:22:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 10:22:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-18 10:22:33,241 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-18 10:22:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:33,242 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-18 10:22:33,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-18 10:22:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:22:33,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:33,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:33,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:22:33,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:33,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-18 10:22:33,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:33,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261252525] [2020-08-18 10:22:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,528 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:22:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:22:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:22:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:22:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:33,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261252525] [2020-08-18 10:22:33,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:33,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:22:33,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007468149] [2020-08-18 10:22:33,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:22:33,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:33,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:22:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:22:33,669 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-18 10:22:34,006 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:35,084 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:35,657 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-18 10:22:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:22:35,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 10:22:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:35,666 INFO L225 Difference]: With dead ends: 324 [2020-08-18 10:22:35,666 INFO L226 Difference]: Without dead ends: 234 [2020-08-18 10:22:35,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:22:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-18 10:22:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-18 10:22:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 10:22:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-18 10:22:35,729 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-18 10:22:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:35,730 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-18 10:22:35,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:22:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-18 10:22:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:22:35,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:35,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:35,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:22:35,732 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-18 10:22:35,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:35,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069422419] [2020-08-18 10:22:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,012 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:36,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:22:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 10:22:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:22:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:22:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:36,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069422419] [2020-08-18 10:22:36,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:36,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:36,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614837165] [2020-08-18 10:22:36,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:36,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:36,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:36,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:36,166 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-18 10:22:36,547 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:37,807 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:38,063 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:38,314 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:38,529 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:39,148 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-18 10:22:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:22:39,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 10:22:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:39,154 INFO L225 Difference]: With dead ends: 528 [2020-08-18 10:22:39,154 INFO L226 Difference]: Without dead ends: 359 [2020-08-18 10:22:39,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:22:39,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-18 10:22:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-18 10:22:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-18 10:22:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-18 10:22:39,227 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-18 10:22:39,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:39,227 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-18 10:22:39,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-18 10:22:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:22:39,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:39,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:39,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:22:39,231 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-18 10:22:39,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:39,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634604898] [2020-08-18 10:22:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,510 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 10:22:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:22:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:22:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:39,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634604898] [2020-08-18 10:22:39,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:39,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:22:39,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669705019] [2020-08-18 10:22:39,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:22:39,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:22:39,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:22:39,677 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-18 10:22:40,118 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:40,671 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:42,142 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:43,648 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-18 10:22:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:22:43,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 10:22:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:43,655 INFO L225 Difference]: With dead ends: 770 [2020-08-18 10:22:43,655 INFO L226 Difference]: Without dead ends: 590 [2020-08-18 10:22:43,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:22:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-18 10:22:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-18 10:22:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 10:22:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-18 10:22:43,762 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-18 10:22:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:43,763 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-18 10:22:43,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:22:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-18 10:22:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:22:43,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:43,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:43,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:22:43,766 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:43,766 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-18 10:22:43,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:43,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578879464] [2020-08-18 10:22:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,077 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:44,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 10:22:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:22:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:22:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:44,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578879464] [2020-08-18 10:22:44,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:44,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:44,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245139413] [2020-08-18 10:22:44,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:44,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:44,194 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-18 10:22:45,016 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:45,243 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:45,485 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:46,408 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-18 10:22:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:22:46,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-18 10:22:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:46,415 INFO L225 Difference]: With dead ends: 947 [2020-08-18 10:22:46,416 INFO L226 Difference]: Without dead ends: 566 [2020-08-18 10:22:46,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:22:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-18 10:22:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-18 10:22:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 10:22:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-18 10:22:46,509 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-18 10:22:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:46,509 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-18 10:22:46,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-18 10:22:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:22:46,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:46,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:46,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:22:46,512 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-18 10:22:46,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:46,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098552710] [2020-08-18 10:22:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,773 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 10:22:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:22:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:22:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:46,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098552710] [2020-08-18 10:22:46,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:46,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:22:46,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953880796] [2020-08-18 10:22:46,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:22:46,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:46,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:22:46,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:22:46,974 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-18 10:22:47,545 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:47,792 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:48,009 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:48,637 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:48,890 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:49,152 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:49,383 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:50,413 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-18 10:22:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:22:50,414 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 10:22:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:50,418 INFO L225 Difference]: With dead ends: 1071 [2020-08-18 10:22:50,418 INFO L226 Difference]: Without dead ends: 571 [2020-08-18 10:22:50,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 10:22:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-18 10:22:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-18 10:22:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-18 10:22:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-18 10:22:50,538 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-18 10:22:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:50,539 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-18 10:22:50,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:22:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-18 10:22:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 10:22:50,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:50,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:50,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:22:50,542 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-18 10:22:50,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:50,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915300394] [2020-08-18 10:22:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,848 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:22:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 10:22:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 10:22:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:22:51,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915300394] [2020-08-18 10:22:51,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:22:51,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:22:51,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128368997] [2020-08-18 10:22:51,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:22:51,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:22:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:22:51,080 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-18 10:22:51,750 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:52,408 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:53,175 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:53,498 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:53,803 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:54,054 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:22:54,343 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:22:54,600 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:22:55,066 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-18 10:22:55,310 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:22:55,579 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:22:55,861 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 10:22:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:57,733 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-18 10:22:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:22:57,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-18 10:22:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:57,741 INFO L225 Difference]: With dead ends: 1563 [2020-08-18 10:22:57,741 INFO L226 Difference]: Without dead ends: 1056 [2020-08-18 10:22:57,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-18 10:22:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-18 10:22:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-18 10:22:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-18 10:22:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-18 10:22:57,939 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-18 10:22:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:57,940 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-18 10:22:57,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:22:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-18 10:22:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 10:22:57,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:57,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:57,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:22:57,944 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:57,944 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-18 10:22:57,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:57,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530465492] [2020-08-18 10:22:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,226 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:22:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:22:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:22:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:22:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 10:22:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:22:58,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530465492] [2020-08-18 10:22:58,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:58,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 10:22:58,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400274754] [2020-08-18 10:22:58,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 10:22:58,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 10:22:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:22:58,380 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-18 10:22:59,150 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:59,400 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:59,659 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:00,216 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:01,042 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:01,463 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:02,090 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:02,361 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:02,648 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:04,223 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-18 10:23:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 10:23:04,223 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-18 10:23:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:04,230 INFO L225 Difference]: With dead ends: 2050 [2020-08-18 10:23:04,231 INFO L226 Difference]: Without dead ends: 1076 [2020-08-18 10:23:04,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-18 10:23:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-18 10:23:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-18 10:23:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-18 10:23:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-18 10:23:04,390 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-18 10:23:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:04,391 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-18 10:23:04,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 10:23:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-18 10:23:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 10:23:04,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:04,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:04,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:23:04,394 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:04,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-18 10:23:04,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:04,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98953060] [2020-08-18 10:23:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,712 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:23:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:23:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:23:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 10:23:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:23:04,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98953060] [2020-08-18 10:23:04,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:23:04,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 10:23:04,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440453315] [2020-08-18 10:23:04,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:23:04,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:04,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:23:04,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:23:04,890 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-18 10:23:05,699 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:05,944 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:06,175 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:07,163 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:07,672 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:07,975 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:08,237 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:08,880 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-18 10:23:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:23:08,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-18 10:23:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:08,882 INFO L225 Difference]: With dead ends: 1575 [2020-08-18 10:23:08,882 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 10:23:08,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-18 10:23:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 10:23:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 10:23:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 10:23:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 10:23:08,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-18 10:23:08,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:08,888 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 10:23:08,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:23:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 10:23:08,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 10:23:08,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:23:08,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 10:23:09,982 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-18 10:23:11,532 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-18 10:23:11,903 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-18 10:23:13,535 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-18 10:23:14,551 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 10:23:15,694 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-18 10:23:16,509 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-18 10:23:16,676 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 10:23:16,841 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 10:23:17,009 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-18 10:23:17,631 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-18 10:23:18,795 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-18 10:23:19,388 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-18 10:23:19,570 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-18 10:23:19,742 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 10:23:20,337 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-18 10:23:21,155 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-18 10:23:21,323 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 10:23:21,533 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:21,696 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 10:23:22,492 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-18 10:23:22,757 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-18 10:23:22,926 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 10:23:24,069 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2020-08-18 10:23:24,236 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1 [2020-08-18 10:23:25,389 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 171 DAG size of output: 31