/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:00:35,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:00:35,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:00:35,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:00:35,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:00:35,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:00:35,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:00:35,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:00:35,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:00:35,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:00:35,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:00:35,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:00:35,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:00:35,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:00:35,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:00:35,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:00:35,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:00:35,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:00:35,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:00:35,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:00:35,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:00:35,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:00:35,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:00:35,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:00:35,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:00:35,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:00:35,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:00:35,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:00:35,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:00:35,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:00:35,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:00:35,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:00:35,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:00:35,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:00:35,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:00:35,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:00:35,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:00:35,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:00:35,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:00:35,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:00:35,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:00:35,331 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 12:00:35,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:00:35,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:00:35,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:00:35,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:00:35,373 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:00:35,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:00:35,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:00:35,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:00:35,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:00:35,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:00:35,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:00:35,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:00:35,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:00:35,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:00:35,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:00:35,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:00:35,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:00:35,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:00:35,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:00:35,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:00:35,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:00:35,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:00:35,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:00:35,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:00:35,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:00:35,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:00:35,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:00:35,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:00:35,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:00:35,379 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:00:35,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:00:35,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:00:35,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:00:35,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:00:35,704 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:00:35,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-18 12:00:35,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34d889291/81232074c5514a82b2da6d6a6bc18e4c/FLAG551a775df [2020-08-18 12:00:36,281 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:00:36,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-18 12:00:36,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34d889291/81232074c5514a82b2da6d6a6bc18e4c/FLAG551a775df [2020-08-18 12:00:36,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34d889291/81232074c5514a82b2da6d6a6bc18e4c [2020-08-18 12:00:36,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:00:36,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:00:36,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:00:36,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:00:36,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:00:36,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:00:36" (1/1) ... [2020-08-18 12:00:36,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76127e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:36, skipping insertion in model container [2020-08-18 12:00:36,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:00:36" (1/1) ... [2020-08-18 12:00:36,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:00:36,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:00:37,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:00:37,137 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:00:37,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:00:37,260 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:00:37,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37 WrapperNode [2020-08-18 12:00:37,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:00:37,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:00:37,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:00:37,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:00:37,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (1/1) ... [2020-08-18 12:00:37,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:00:37,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:00:37,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:00:37,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:00:37,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (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 12:00:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:00:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:00:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:00:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:00:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:00:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:00:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:00:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:00:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:00:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:00:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:00:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:00:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:00:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:00:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:00:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:00:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:00:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:00:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:00:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:00:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:00:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:00:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:00:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:00:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:00:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:00:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:00:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:00:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:00:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:00:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:00:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 12:00:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:00:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:00:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:00:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:00:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:00:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:00:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:00:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:00:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:00:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:00:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:00:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:00:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:00:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:00:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:00:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:00:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:00:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:00:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:00:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:00:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:00:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:00:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:00:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:00:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:00:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:00:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:00:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:00:38,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:00:38,568 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:00:38,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:00:38 BoogieIcfgContainer [2020-08-18 12:00:38,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:00:38,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:00:38,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:00:38,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:00:38,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:00:36" (1/3) ... [2020-08-18 12:00:38,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e75928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:00:38, skipping insertion in model container [2020-08-18 12:00:38,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:00:37" (2/3) ... [2020-08-18 12:00:38,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e75928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:00:38, skipping insertion in model container [2020-08-18 12:00:38,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:00:38" (3/3) ... [2020-08-18 12:00:38,583 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-08-18 12:00:38,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:00:38,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:00:38,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:00:38,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:00:38,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:00:38,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:00:38,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:00:38,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:00:38,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:00:38,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:00:38,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:00:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 12:00:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 12:00:38,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:00:38,677 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 12:00:38,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:00:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:00:38,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1144967718, now seen corresponding path program 1 times [2020-08-18 12:00:38,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:00:38,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279444806] [2020-08-18 12:00:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:00:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,379 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:00:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:00:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:00:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:00:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:00:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:00:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:00:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:00:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:39,504 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 12:00:39,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279444806] [2020-08-18 12:00:39,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:00:39,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 12:00:39,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430865277] [2020-08-18 12:00:39,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 12:00:39,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:00:39,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 12:00:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 12:00:39,533 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-18 12:00:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:00:40,776 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2020-08-18 12:00:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 12:00:40,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 12:00:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:00:40,792 INFO L225 Difference]: With dead ends: 293 [2020-08-18 12:00:40,792 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 12:00:40,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 12:00:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 12:00:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 12:00:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 12:00:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 12:00:40,881 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-18 12:00:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:00:40,881 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 12:00:40,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 12:00:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 12:00:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 12:00:40,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:00:40,885 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 12:00:40,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:00:40,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:00:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:00:40,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1860542733, now seen corresponding path program 1 times [2020-08-18 12:00:40,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:00:40,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598736321] [2020-08-18 12:00:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:00:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,286 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:00:41,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:00:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:00:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:00:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:00:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:00:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:00:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 12:00:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:41,330 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 12:00:41,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598736321] [2020-08-18 12:00:41,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:00:41,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:00:41,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205728622] [2020-08-18 12:00:41,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:00:41,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:00:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:00:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:00:41,334 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-18 12:00:41,799 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:00:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:00:42,627 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2020-08-18 12:00:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:00:42,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 12:00:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:00:42,631 INFO L225 Difference]: With dead ends: 226 [2020-08-18 12:00:42,632 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 12:00:42,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:00:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 12:00:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-18 12:00:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 12:00:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-18 12:00:42,674 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-18 12:00:42,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:00:42,674 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-18 12:00:42,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:00:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-18 12:00:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 12:00:42,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:00:42,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:00:42,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:00:42,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:00:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:00:42,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1943742618, now seen corresponding path program 1 times [2020-08-18 12:00:42,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:00:42,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313554500] [2020-08-18 12:00:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:00:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,035 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:00:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:00:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:00:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:00:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:00:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:00:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:00:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 12:00:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:43,173 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 12:00:43,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313554500] [2020-08-18 12:00:43,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:00:43,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:00:43,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659324177] [2020-08-18 12:00:43,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:00:43,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:00:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:00:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:00:43,176 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-18 12:00:43,592 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:00:43,927 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:44,179 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:44,418 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:00:45,530 INFO L93 Difference]: Finished difference Result 235 states and 287 transitions. [2020-08-18 12:00:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:00:45,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 12:00:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:00:45,535 INFO L225 Difference]: With dead ends: 235 [2020-08-18 12:00:45,535 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 12:00:45,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:00:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 12:00:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-18 12:00:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 12:00:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-18 12:00:45,572 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 51 [2020-08-18 12:00:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:00:45,573 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-18 12:00:45,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:00:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-18 12:00:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 12:00:45,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:00:45,575 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] [2020-08-18 12:00:45,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:00:45,575 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:00:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:00:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1699182139, now seen corresponding path program 1 times [2020-08-18 12:00:45,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:00:45,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125493770] [2020-08-18 12:00:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:00:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,888 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:00:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:00:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:00:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:00:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:00:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:00:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 12:00:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:00:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 12:00:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:45,971 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 12:00:45,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125493770] [2020-08-18 12:00:45,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:00:45,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:00:45,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037216055] [2020-08-18 12:00:45,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:00:45,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:00:45,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:00:45,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:00:45,975 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 6 states. [2020-08-18 12:00:46,312 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:00:47,415 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:00:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:00:48,040 INFO L93 Difference]: Finished difference Result 327 states and 403 transitions. [2020-08-18 12:00:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:00:48,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 12:00:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:00:48,045 INFO L225 Difference]: With dead ends: 327 [2020-08-18 12:00:48,045 INFO L226 Difference]: Without dead ends: 234 [2020-08-18 12:00:48,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:00:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-18 12:00:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-18 12:00:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 12:00:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 219 transitions. [2020-08-18 12:00:48,088 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 219 transitions. Word has length 64 [2020-08-18 12:00:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:00:48,088 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 219 transitions. [2020-08-18 12:00:48,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:00:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 219 transitions. [2020-08-18 12:00:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 12:00:48,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:00:48,091 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] [2020-08-18 12:00:48,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:00:48,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:00:48,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:00:48,092 INFO L82 PathProgramCache]: Analyzing trace with hash 906371281, now seen corresponding path program 1 times [2020-08-18 12:00:48,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:00:48,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520211061] [2020-08-18 12:00:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:00:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,436 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:00:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:00:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:00:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:00:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:00:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:00:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 12:00:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:00:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:00:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 12:00:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 12:00:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:48,619 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 12:00:48,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520211061] [2020-08-18 12:00:48,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:00:48,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:00:48,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059712593] [2020-08-18 12:00:48,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:00:48,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:00:48,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:00:48,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:00:48,624 INFO L87 Difference]: Start difference. First operand 193 states and 219 transitions. Second operand 12 states. [2020-08-18 12:00:49,157 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:00:49,465 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:49,728 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:49,981 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:50,487 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:00:51,374 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:51,687 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:00:51,939 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:00:52,169 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:00:52,431 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:00:52,677 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:00:53,901 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:00:54,241 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:00:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:00:54,838 INFO L93 Difference]: Finished difference Result 671 states and 870 transitions. [2020-08-18 12:00:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 12:00:54,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-18 12:00:54,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:00:54,845 INFO L225 Difference]: With dead ends: 671 [2020-08-18 12:00:54,845 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 12:00:54,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 12:00:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 12:00:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 444. [2020-08-18 12:00:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-08-18 12:00:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 523 transitions. [2020-08-18 12:00:54,987 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 523 transitions. Word has length 78 [2020-08-18 12:00:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:00:54,987 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 523 transitions. [2020-08-18 12:00:54,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:00:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 523 transitions. [2020-08-18 12:00:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 12:00:54,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:00:54,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:54,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:00:54,995 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:00:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:00:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1573115002, now seen corresponding path program 1 times [2020-08-18 12:00:54,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:00:54,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695324628] [2020-08-18 12:00:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:00:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,374 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:00:55,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:00:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:00:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:00:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:00:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:00:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:00:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:00:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:00:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:00:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 12:00:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:00:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:00:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 12:00:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:00:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:00:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:00:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 12:00:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 12:00:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:00:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 12:00:55,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695324628] [2020-08-18 12:00:55,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:00:55,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 12:00:55,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534968393] [2020-08-18 12:00:55,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:00:55,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:00:55,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:00:55,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:00:55,671 INFO L87 Difference]: Start difference. First operand 444 states and 523 transitions. Second operand 13 states. [2020-08-18 12:00:56,092 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:00:56,714 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:00:57,205 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:00:57,469 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:00:57,742 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:00:58,013 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:00:58,245 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:00:58,512 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:00:58,820 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:00:59,111 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:00,577 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:00,815 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:01:01,061 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:01,315 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:01:01,800 INFO L93 Difference]: Finished difference Result 898 states and 1145 transitions. [2020-08-18 12:01:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 12:01:01,801 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-18 12:01:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:01:01,806 INFO L225 Difference]: With dead ends: 898 [2020-08-18 12:01:01,807 INFO L226 Difference]: Without dead ends: 478 [2020-08-18 12:01:01,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 12:01:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-18 12:01:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 416. [2020-08-18 12:01:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 12:01:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 494 transitions. [2020-08-18 12:01:01,904 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 494 transitions. Word has length 130 [2020-08-18 12:01:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:01:01,904 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 494 transitions. [2020-08-18 12:01:01,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:01:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 494 transitions. [2020-08-18 12:01:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 12:01:01,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:01:01,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:01,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:01:01,907 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:01:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:01:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1101814222, now seen corresponding path program 1 times [2020-08-18 12:01:01,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:01:01,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274842542] [2020-08-18 12:01:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:01:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,183 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:01:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:01:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:01:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:01:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:01:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:01:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:01:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:01:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 12:01:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 12:01:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 12:01:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:01:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 12:01:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 12:01:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 12:01:02,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274842542] [2020-08-18 12:01:02,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:01:02,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 12:01:02,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759322963] [2020-08-18 12:01:02,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:01:02,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:01:02,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:01:02,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:01:02,431 INFO L87 Difference]: Start difference. First operand 416 states and 494 transitions. Second operand 12 states. [2020-08-18 12:01:03,418 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:03,664 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:03,888 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:04,478 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:04,728 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:04,959 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:01:05,953 INFO L93 Difference]: Finished difference Result 757 states and 931 transitions. [2020-08-18 12:01:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:01:05,957 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-18 12:01:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:01:05,960 INFO L225 Difference]: With dead ends: 757 [2020-08-18 12:01:05,960 INFO L226 Difference]: Without dead ends: 365 [2020-08-18 12:01:05,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:01:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-08-18 12:01:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 341. [2020-08-18 12:01:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-18 12:01:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 402 transitions. [2020-08-18 12:01:06,030 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 402 transitions. Word has length 126 [2020-08-18 12:01:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:01:06,030 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 402 transitions. [2020-08-18 12:01:06,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:01:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 402 transitions. [2020-08-18 12:01:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 12:01:06,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:01:06,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:06,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:01:06,033 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:01:06,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:01:06,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2074968439, now seen corresponding path program 1 times [2020-08-18 12:01:06,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:01:06,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013241839] [2020-08-18 12:01:06,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:01:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,371 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:01:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:01:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:01:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:01:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:01:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:01:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:01:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:01:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:01:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 12:01:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:01:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 12:01:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:01:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 12:01:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 12:01:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 12:01:06,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013241839] [2020-08-18 12:01:06,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:01:06,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 12:01:06,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489681864] [2020-08-18 12:01:06,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:01:06,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:01:06,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:01:06,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:01:06,551 INFO L87 Difference]: Start difference. First operand 341 states and 402 transitions. Second operand 13 states. [2020-08-18 12:01:07,179 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:01:07,841 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:09,461 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:09,737 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:09,991 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:10,241 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:10,508 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:10,761 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:11,016 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:11,246 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:11,499 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:11,732 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:01:12,267 INFO L93 Difference]: Finished difference Result 954 states and 1168 transitions. [2020-08-18 12:01:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 12:01:12,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-18 12:01:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:01:12,273 INFO L225 Difference]: With dead ends: 954 [2020-08-18 12:01:12,273 INFO L226 Difference]: Without dead ends: 637 [2020-08-18 12:01:12,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-18 12:01:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-08-18 12:01:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 598. [2020-08-18 12:01:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-18 12:01:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 696 transitions. [2020-08-18 12:01:12,414 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 696 transitions. Word has length 130 [2020-08-18 12:01:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:01:12,415 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 696 transitions. [2020-08-18 12:01:12,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:01:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 696 transitions. [2020-08-18 12:01:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 12:01:12,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:01:12,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:01:12,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:01:12,421 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:01:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:01:12,422 INFO L82 PathProgramCache]: Analyzing trace with hash 106896037, now seen corresponding path program 1 times [2020-08-18 12:01:12,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:01:12,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869041522] [2020-08-18 12:01:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:01:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,750 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:01:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:01:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:01:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:01:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:01:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:01:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:01:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:01:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:01:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:01:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 12:01:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 12:01:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 12:01:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:01:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 12:01:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 12:01:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 12:01:12,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869041522] [2020-08-18 12:01:12,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:01:12,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 12:01:12,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518920982] [2020-08-18 12:01:12,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:01:12,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:01:12,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:01:12,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:01:12,911 INFO L87 Difference]: Start difference. First operand 598 states and 696 transitions. Second operand 11 states. [2020-08-18 12:01:13,471 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:01:15,234 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:15,469 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:01:15,751 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:16,006 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:16,241 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:01:16,580 INFO L93 Difference]: Finished difference Result 703 states and 873 transitions. [2020-08-18 12:01:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 12:01:16,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-18 12:01:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:01:16,592 INFO L225 Difference]: With dead ends: 703 [2020-08-18 12:01:16,592 INFO L226 Difference]: Without dead ends: 700 [2020-08-18 12:01:16,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-18 12:01:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-08-18 12:01:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 598. [2020-08-18 12:01:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-18 12:01:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 694 transitions. [2020-08-18 12:01:16,737 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 694 transitions. Word has length 134 [2020-08-18 12:01:16,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:01:16,740 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 694 transitions. [2020-08-18 12:01:16,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:01:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 694 transitions. [2020-08-18 12:01:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 12:01:16,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:01:16,743 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:16,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:01:16,744 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:01:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:01:16,744 INFO L82 PathProgramCache]: Analyzing trace with hash -355706806, now seen corresponding path program 1 times [2020-08-18 12:01:16,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:01:16,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863553165] [2020-08-18 12:01:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:01:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,025 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 12:01:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:01:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:01:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:01:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:01:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:01:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:01:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:01:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:01:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 12:01:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:01:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 12:01:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:01:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:01:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:01:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 12:01:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 12:01:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:01:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 12:01:17,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863553165] [2020-08-18 12:01:17,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:01:17,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 12:01:17,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610092369] [2020-08-18 12:01:17,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:01:17,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:01:17,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:01:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:01:17,233 INFO L87 Difference]: Start difference. First operand 598 states and 694 transitions. Second operand 12 states. [2020-08-18 12:01:17,767 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:01:18,519 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:01:19,047 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:01:19,309 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:01:19,535 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:01:19,761 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:20,011 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:01:20,267 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:01:21,755 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 12:01:22,010 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 12:01:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:01:22,634 INFO L93 Difference]: Finished difference Result 1409 states and 1754 transitions. [2020-08-18 12:01:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 12:01:22,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-18 12:01:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:01:22,642 INFO L225 Difference]: With dead ends: 1409 [2020-08-18 12:01:22,642 INFO L226 Difference]: Without dead ends: 953 [2020-08-18 12:01:22,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 12:01:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-08-18 12:01:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 811. [2020-08-18 12:01:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-18 12:01:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 956 transitions. [2020-08-18 12:01:22,810 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 956 transitions. Word has length 134 [2020-08-18 12:01:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:01:22,810 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 956 transitions. [2020-08-18 12:01:22,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:01:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 956 transitions. [2020-08-18 12:01:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-18 12:01:22,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:01:22,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:22,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:01:22,816 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:01:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:01:22,817 INFO L82 PathProgramCache]: Analyzing trace with hash -775865217, now seen corresponding path program 2 times [2020-08-18 12:01:22,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:01:22,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352427279] [2020-08-18 12:01:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:01:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:01:22,897 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:01:22,897 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:01:22,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:01:22,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:01:22 BoogieIcfgContainer [2020-08-18 12:01:22,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:01:22,956 INFO L168 Benchmark]: Toolchain (without parser) took 46294.74 ms. Allocated memory was 140.5 MB in the beginning and 697.3 MB in the end (delta: 556.8 MB). Free memory was 102.4 MB in the beginning and 489.1 MB in the end (delta: -386.7 MB). Peak memory consumption was 170.1 MB. Max. memory is 7.1 GB. [2020-08-18 12:01:22,958 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 12:01:22,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.34 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 171.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-18 12:01:22,962 INFO L168 Benchmark]: Boogie Preprocessor took 130.62 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 166.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 12:01:22,964 INFO L168 Benchmark]: RCFGBuilder took 1181.64 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 166.5 MB in the beginning and 195.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-18 12:01:22,969 INFO L168 Benchmark]: TraceAbstraction took 44379.39 ms. Allocated memory was 235.4 MB in the beginning and 697.3 MB in the end (delta: 461.9 MB). Free memory was 195.8 MB in the beginning and 489.1 MB in the end (delta: -293.3 MB). Peak memory consumption was 168.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:01:22,973 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 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 598.34 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 171.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.62 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 166.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1181.64 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 166.5 MB in the beginning and 195.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44379.39 ms. Allocated memory was 235.4 MB in the beginning and 697.3 MB in the end (delta: 461.9 MB). Free memory was 195.8 MB in the beginning and 489.1 MB in the end (delta: -293.3 MB). Peak memory consumption was 168.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; [L412] FCALL select_helpers() [L413] FCALL select_features() [L414] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L414] RET, EXPR valid_product() [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) [L418] FCALL setup() [L419] CALL runTest() [L401] CALL test() [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) [L104] CALL waterRise() [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 [L104] RET waterRise() [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND FALSE !(\read(pumpRunning)) [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND FALSE !(\read(pumpRunning)) [L236] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND TRUE ! pumpRunning [L197] CALL, EXPR isHighWaterLevel() [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR isHighWaterSensorDry() [L520] int retValue_acc ; [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); [L321] RET, EXPR isHighWaterSensorDry() [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); [L197] RET, EXPR isHighWaterLevel() [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L201] CALL activatePump() [L246] pumpRunning = 1 [L201] RET activatePump() [L236] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L910] CALL, EXPR isPumpRunning() [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); [L910] RET, EXPR isPumpRunning() [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) [L914] CALL __automaton_fail() [L434] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 37.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1240 SDtfs, 3056 SDslu, 1647 SDs, 0 SdLazy, 8716 SolverSat, 1972 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=811occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 550 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1125 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 339546 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 112/124 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...