/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:16:05,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:16:05,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:16:05,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:16:05,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:16:05,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:16:05,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:16:05,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:16:05,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:16:05,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:16:05,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:16:05,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:16:05,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:16:05,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:16:05,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:16:05,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:16:05,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:16:05,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:16:05,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:16:05,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:16:05,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:16:05,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:16:05,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:16:05,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:16:05,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:16:05,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:16:05,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:16:05,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:16:05,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:16:05,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:16:05,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:16:05,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:16:05,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:16:05,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:16:05,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:16:05,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:16:05,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:16:05,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:16:05,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:16:05,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:16:05,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:16:05,397 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 19:16:05,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:16:05,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:16:05,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:16:05,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:16:05,421 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:16:05,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:16:05,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:16:05,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:16:05,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:16:05,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:16:05,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:16:05,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:16:05,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:16:05,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:16:05,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:16:05,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:16:05,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:16:05,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:16:05,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:16:05,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:16:05,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:16:05,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:16:05,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:16:05,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:16:05,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:16:05,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:16:05,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:16:05,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:16:05,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:16:05,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:16:05,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:16:05,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:16:05,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:16:05,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:16:05,720 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:16:05,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 19:16:05,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba83957d/2d36ac4fd6314a28aaf59f650706a482/FLAG3384dfecd [2020-08-18 19:16:06,283 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:16:06,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 19:16:06,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba83957d/2d36ac4fd6314a28aaf59f650706a482/FLAG3384dfecd [2020-08-18 19:16:06,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba83957d/2d36ac4fd6314a28aaf59f650706a482 [2020-08-18 19:16:06,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:16:06,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:16:06,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:16:06,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:16:06,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:16:06,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:16:06" (1/1) ... [2020-08-18 19:16:06,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:06, skipping insertion in model container [2020-08-18 19:16:06,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:16:06" (1/1) ... [2020-08-18 19:16:06,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:16:06,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:16:07,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:16:07,219 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:16:07,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:16:07,323 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:16:07,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07 WrapperNode [2020-08-18 19:16:07,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:16:07,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:16:07,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:16:07,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:16:07,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (1/1) ... [2020-08-18 19:16:07,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:16:07,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:16:07,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:16:07,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:16:07,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (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 19:16:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:16:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:16:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:16:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:16:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:16:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:16:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:16:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:16:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:16:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:16:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:16:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:16:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:16:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:16:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:16:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:16:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:16:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:16:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:16:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:16:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:16:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:16:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:16:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:16:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:16:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:16:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:16:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:16:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:16:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:16:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:16:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:16:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:16:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:16:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:16:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:16:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:16:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:16:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:16:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:16:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:16:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:16:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:16:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:16:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:16:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:16:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:16:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:16:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:16:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:16:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:16:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:16:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:16:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:16:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:16:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:16:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:16:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:16:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:16:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:16:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:16:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:16:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:16:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:16:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:16:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:16:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:16:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:16:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:16:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:16:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:16:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:16:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:16:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:16:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:16:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:16:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:16:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:16:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:16:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:16:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:16:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:16:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:16:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:16:08,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:16:08,574 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:16:08,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:16:08 BoogieIcfgContainer [2020-08-18 19:16:08,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:16:08,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:16:08,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:16:08,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:16:08,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:16:06" (1/3) ... [2020-08-18 19:16:08,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cad5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:16:08, skipping insertion in model container [2020-08-18 19:16:08,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:16:07" (2/3) ... [2020-08-18 19:16:08,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cad5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:16:08, skipping insertion in model container [2020-08-18 19:16:08,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:16:08" (3/3) ... [2020-08-18 19:16:08,587 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-18 19:16:08,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:16:08,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:16:08,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:16:08,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:16:08,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:16:08,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:16:08,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:16:08,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:16:08,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:16:08,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:16:08,641 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:16:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 19:16:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:16:08,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:08,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:08,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-18 19:16:08,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:08,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220129585] [2020-08-18 19:16:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,351 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:16:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:16:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:09,428 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 19:16:09,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220129585] [2020-08-18 19:16:09,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:09,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:16:09,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811513978] [2020-08-18 19:16:09,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:16:09,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:16:09,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:16:09,455 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-18 19:16:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:10,524 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 19:16:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:16:10,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:16:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:10,540 INFO L225 Difference]: With dead ends: 306 [2020-08-18 19:16:10,540 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 19:16:10,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:16:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 19:16:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 19:16:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 19:16:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 19:16:10,637 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 19:16:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:10,638 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 19:16:10,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:16:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 19:16:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:16:10,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:10,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:10,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:16:10,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:10,643 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-18 19:16:10,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:10,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659881850] [2020-08-18 19:16:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,966 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:16:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:16:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:11,005 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 19:16:11,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659881850] [2020-08-18 19:16:11,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:11,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:16:11,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535640054] [2020-08-18 19:16:11,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:16:11,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:11,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:16:11,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:16:11,008 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 19:16:11,394 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:12,155 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 19:16:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:16:12,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:16:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:12,160 INFO L225 Difference]: With dead ends: 235 [2020-08-18 19:16:12,160 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 19:16:12,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:16:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 19:16:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 19:16:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 19:16:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 19:16:12,198 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 19:16:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:12,199 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 19:16:12,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:16:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 19:16:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:16:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:12,202 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 19:16:12,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:16:12,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-18 19:16:12,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:12,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269899255] [2020-08-18 19:16:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,506 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:16:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:16:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,623 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 19:16:12,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269899255] [2020-08-18 19:16:12,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:12,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:16:12,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769261788] [2020-08-18 19:16:12,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:16:12,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:12,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:16:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:16:12,629 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 19:16:12,963 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:13,254 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:13,523 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:13,749 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:14,873 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 19:16:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:16:14,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 19:16:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:14,877 INFO L225 Difference]: With dead ends: 248 [2020-08-18 19:16:14,877 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 19:16:14,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 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 19:16:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 19:16:14,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 19:16:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 19:16:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 19:16:14,913 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 19:16:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:14,914 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 19:16:14,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:16:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 19:16:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:16:14,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:14,916 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 19:16:14,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:16:14,917 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:14,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-18 19:16:14,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:14,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464926318] [2020-08-18 19:16:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,184 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:15,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:16:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:16:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 19:16:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:15,288 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 19:16:15,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464926318] [2020-08-18 19:16:15,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:15,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:16:15,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685729907] [2020-08-18 19:16:15,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:16:15,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:16:15,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:16:15,292 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 19:16:15,644 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:16,729 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:17,360 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 19:16:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:16:17,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 19:16:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:17,365 INFO L225 Difference]: With dead ends: 345 [2020-08-18 19:16:17,365 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 19:16:17,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:16:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 19:16:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 19:16:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 19:16:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 19:16:17,420 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 19:16:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:17,421 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 19:16:17,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:16:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 19:16:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 19:16:17,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:17,423 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 19:16:17,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:16:17,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:17,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-18 19:16:17,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:17,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101953122] [2020-08-18 19:16:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,690 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:17,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:16:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 19:16:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:16:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:17,858 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 19:16:17,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101953122] [2020-08-18 19:16:17,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:17,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:16:17,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701244104] [2020-08-18 19:16:17,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:16:17,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:17,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:16:17,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:16:17,868 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-18 19:16:18,268 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:19,325 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:19,600 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:19,828 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:20,040 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:20,320 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:21,352 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-18 19:16:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:16:21,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 19:16:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:21,359 INFO L225 Difference]: With dead ends: 607 [2020-08-18 19:16:21,360 INFO L226 Difference]: Without dead ends: 428 [2020-08-18 19:16:21,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:16:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-18 19:16:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-18 19:16:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 19:16:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-18 19:16:21,440 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-18 19:16:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:21,440 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-18 19:16:21,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:16:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-18 19:16:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 19:16:21,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:21,442 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 19:16:21,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:16:21,443 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:21,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-18 19:16:21,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:21,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053684482] [2020-08-18 19:16:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,702 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:16:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:16:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:21,803 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 19:16:21,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053684482] [2020-08-18 19:16:21,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:21,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:16:21,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069611061] [2020-08-18 19:16:21,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:16:21,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:21,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:16:21,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:16:21,806 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-18 19:16:22,157 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:23,205 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:23,418 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:23,673 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:23,945 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:24,185 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:25,154 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-18 19:16:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:16:25,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 19:16:25,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:25,160 INFO L225 Difference]: With dead ends: 470 [2020-08-18 19:16:25,160 INFO L226 Difference]: Without dead ends: 467 [2020-08-18 19:16:25,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:16:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-18 19:16:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-18 19:16:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 19:16:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 19:16:25,235 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-18 19:16:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:25,235 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 19:16:25,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 19:16:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 19:16:25,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:25,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:25,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:16:25,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-18 19:16:25,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:25,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167646931] [2020-08-18 19:16:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,497 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:16:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 19:16:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:25,613 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 19:16:25,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167646931] [2020-08-18 19:16:25,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:25,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:16:25,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429823042] [2020-08-18 19:16:25,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:16:25,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:25,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:16:25,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:16:25,615 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-18 19:16:26,440 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:26,674 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:16:26,916 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:27,146 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:28,117 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-18 19:16:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:16:28,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 19:16:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:28,122 INFO L225 Difference]: With dead ends: 808 [2020-08-18 19:16:28,122 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 19:16:28,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:16:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 19:16:28,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-18 19:16:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-18 19:16:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-18 19:16:28,205 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-18 19:16:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:28,205 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-18 19:16:28,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-18 19:16:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 19:16:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:28,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:28,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:16:28,208 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:28,208 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-18 19:16:28,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:28,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437584850] [2020-08-18 19:16:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,478 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:28,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:16:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 19:16:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:28,607 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 19:16:28,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437584850] [2020-08-18 19:16:28,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:28,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:16:28,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522383651] [2020-08-18 19:16:28,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:16:28,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:28,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:16:28,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:16:28,610 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-18 19:16:29,899 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:30,175 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:30,387 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:30,971 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:31,214 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:31,445 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:32,558 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-18 19:16:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:16:32,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 19:16:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:32,562 INFO L225 Difference]: With dead ends: 832 [2020-08-18 19:16:32,562 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 19:16:32,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:16:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 19:16:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-18 19:16:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 19:16:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-18 19:16:32,631 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-18 19:16:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:32,632 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-18 19:16:32,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:16:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-18 19:16:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 19:16:32,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:32,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:32,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:16:32,634 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-18 19:16:32,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:32,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814269654] [2020-08-18 19:16:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,865 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:16:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 19:16:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:33,032 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 19:16:33,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814269654] [2020-08-18 19:16:33,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:33,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:16:33,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399044890] [2020-08-18 19:16:33,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:16:33,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:16:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:16:33,036 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-18 19:16:33,401 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:33,894 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:36,003 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-18 19:16:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:16:36,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 19:16:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:36,013 INFO L225 Difference]: With dead ends: 1174 [2020-08-18 19:16:36,013 INFO L226 Difference]: Without dead ends: 819 [2020-08-18 19:16:36,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:16:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-18 19:16:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-18 19:16:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-18 19:16:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-18 19:16:36,259 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-18 19:16:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:36,261 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-18 19:16:36,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:16:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-18 19:16:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 19:16:36,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:36,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:36,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:16:36,268 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-18 19:16:36,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:36,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046160489] [2020-08-18 19:16:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:16:36,375 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:16:36,375 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:16:36,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:16:36,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:16:36 BoogieIcfgContainer [2020-08-18 19:16:36,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:16:36,433 INFO L168 Benchmark]: Toolchain (without parser) took 29781.97 ms. Allocated memory was 139.5 MB in the beginning and 630.2 MB in the end (delta: 490.7 MB). Free memory was 101.2 MB in the beginning and 513.5 MB in the end (delta: -412.3 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,435 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.24 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 168.6 MB in the end (delta: -67.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,442 INFO L168 Benchmark]: Boogie Preprocessor took 133.42 ms. Allocated memory is still 201.9 MB. Free memory was 168.6 MB in the beginning and 163.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,446 INFO L168 Benchmark]: RCFGBuilder took 1121.57 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 163.9 MB in the beginning and 193.0 MB in the end (delta: -29.1 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,447 INFO L168 Benchmark]: TraceAbstraction took 27844.73 ms. Allocated memory was 235.4 MB in the beginning and 630.2 MB in the end (delta: 394.8 MB). Free memory was 193.0 MB in the beginning and 513.5 MB in the end (delta: -320.5 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:36,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.24 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 168.6 MB in the end (delta: -67.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.42 ms. Allocated memory is still 201.9 MB. Free memory was 168.6 MB in the beginning and 163.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1121.57 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 163.9 MB in the beginning and 193.0 MB in the end (delta: -29.1 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27844.73 ms. Allocated memory was 235.4 MB in the beginning and 630.2 MB in the end (delta: 394.8 MB). Free memory was 193.0 MB in the beginning and 513.5 MB in the end (delta: -320.5 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1083 SDtfs, 1822 SDslu, 981 SDs, 0 SdLazy, 5107 SolverSat, 1184 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...