/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:59:36,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:59:36,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:59:36,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:59:36,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:59:36,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:59:36,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:59:36,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:59:36,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:59:36,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:59:36,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:59:36,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:59:36,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:59:36,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:59:36,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:59:36,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:59:36,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:59:36,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:59:36,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:59:36,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:59:36,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:59:36,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:59:36,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:59:36,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:59:36,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:59:36,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:59:36,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:59:36,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:59:36,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:59:36,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:59:36,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:59:36,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:59:36,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:59:36,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:59:36,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:59:36,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:59:36,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:59:36,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:59:36,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:59:36,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:59:36,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:59:36,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:59:36,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:59:36,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:59:36,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:59:36,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:59:36,363 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:59:36,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:59:36,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:59:36,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:59:36,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:59:36,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:59:36,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:59:36,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:59:36,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:59:36,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:59:36,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:59:36,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:59:36,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:59:36,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:59:36,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:59:36,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:59:36,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:59:36,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:59:36,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:59:36,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:59:36,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:59:36,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:59:36,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:59:36,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:59:36,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:59:36,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> log-additional-information=true; [2020-08-21 13:59:36,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:59:36,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:59:36,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:59:36,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:59:36,667 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:59:36,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-08-21 13:59:36,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd0f9dde1/575b737e65874d9585d298bf5d98116f/FLAGe855da0a8 [2020-08-21 13:59:37,282 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:59:37,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-08-21 13:59:37,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd0f9dde1/575b737e65874d9585d298bf5d98116f/FLAGe855da0a8 [2020-08-21 13:59:37,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd0f9dde1/575b737e65874d9585d298bf5d98116f [2020-08-21 13:59:37,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:59:37,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:59:37,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:59:37,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:59:37,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:59:37,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:59:37" (1/1) ... [2020-08-21 13:59:37,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:37, skipping insertion in model container [2020-08-21 13:59:37,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:59:37" (1/1) ... [2020-08-21 13:59:37,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:59:37,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:59:38,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:59:38,166 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:59:38,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:59:38,298 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:59:38,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38 WrapperNode [2020-08-21 13:59:38,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:59:38,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:59:38,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:59:38,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:59:38,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... [2020-08-21 13:59:38,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:59:38,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:59:38,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:59:38,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:59:38,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:59:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:59:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:59:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:59:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:59:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:59:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:59:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:59:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:59:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:59:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:59:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:59:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:59:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:59:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:59:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:59:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:59:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:59:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:59:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:59:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:59:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:59:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:59:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:59:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:59:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 13:59:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:59:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:59:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:59:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:59:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:59:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:59:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:59:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:59:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:59:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:59:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:59:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:59:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:59:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:59:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:59:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:59:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:59:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:59:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:59:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:59:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:59:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:59:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:59:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:59:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:59:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:59:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:59:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:59:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:59:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:59:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:59:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:59:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:59:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:59:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:59:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:59:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:59:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:59:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 13:59:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:59:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:59:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:59:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:59:39,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:59:39,580 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:59:39,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:59:39 BoogieIcfgContainer [2020-08-21 13:59:39,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:59:39,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:59:39,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:59:39,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:59:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:59:37" (1/3) ... [2020-08-21 13:59:39,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b042ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:59:39, skipping insertion in model container [2020-08-21 13:59:39,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:38" (2/3) ... [2020-08-21 13:59:39,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b042ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:59:39, skipping insertion in model container [2020-08-21 13:59:39,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:59:39" (3/3) ... [2020-08-21 13:59:39,596 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-08-21 13:59:39,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:59:39,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:59:39,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:59:39,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:59:39,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:59:39,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:59:39,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:59:39,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:59:39,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:59:39,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:59:39,653 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:59:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-21 13:59:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:59:39,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:39,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:39,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1708045389, now seen corresponding path program 1 times [2020-08-21 13:59:39,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:39,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133181208] [2020-08-21 13:59:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,379 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:59:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:59:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:40,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133181208] [2020-08-21 13:59:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:40,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:59:40,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512640288] [2020-08-21 13:59:40,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:59:40,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:40,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:59:40,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:59:40,509 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 3 states. [2020-08-21 13:59:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:41,593 INFO L93 Difference]: Finished difference Result 290 states and 375 transitions. [2020-08-21 13:59:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:59:41,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:59:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:41,609 INFO L225 Difference]: With dead ends: 290 [2020-08-21 13:59:41,610 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 13:59:41,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:59:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 13:59:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-21 13:59:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 13:59:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-21 13:59:41,712 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 46 [2020-08-21 13:59:41,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:41,714 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-21 13:59:41,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:59:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-21 13:59:41,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:59:41,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:41,719 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] [2020-08-21 13:59:41,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:59:41,720 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1677032245, now seen corresponding path program 1 times [2020-08-21 13:59:41,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:41,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967675998] [2020-08-21 13:59:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,077 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:59:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:59:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:42,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967675998] [2020-08-21 13:59:42,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:42,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:59:42,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877435085] [2020-08-21 13:59:42,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:59:42,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:42,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:59:42,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:59:42,123 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 4 states. [2020-08-21 13:59:42,547 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:43,222 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2020-08-21 13:59:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:59:43,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:59:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:43,228 INFO L225 Difference]: With dead ends: 219 [2020-08-21 13:59:43,229 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 13:59:43,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:59:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 13:59:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-21 13:59:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 13:59:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2020-08-21 13:59:43,282 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 47 [2020-08-21 13:59:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:43,282 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2020-08-21 13:59:43,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:59:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2020-08-21 13:59:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:59:43,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:43,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:43,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:59:43,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash -115096576, now seen corresponding path program 1 times [2020-08-21 13:59:43,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:43,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943132551] [2020-08-21 13:59:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,682 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:43,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:59:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:59:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:43,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943132551] [2020-08-21 13:59:43,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:43,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:59:43,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807740216] [2020-08-21 13:59:43,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:59:43,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:43,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:59:43,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:59:43,778 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand 8 states. [2020-08-21 13:59:44,125 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:44,437 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:44,698 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:44,926 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:45,955 INFO L93 Difference]: Finished difference Result 232 states and 280 transitions. [2020-08-21 13:59:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:59:45,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:59:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:45,958 INFO L225 Difference]: With dead ends: 232 [2020-08-21 13:59:45,959 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 13:59:45,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 13:59:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-21 13:59:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 13:59:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-08-21 13:59:45,997 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 52 [2020-08-21 13:59:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:45,998 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-08-21 13:59:45,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:59:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-08-21 13:59:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 13:59:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:45,999 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] [2020-08-21 13:59:45,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:59:46,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:46,000 INFO L82 PathProgramCache]: Analyzing trace with hash -721685397, now seen corresponding path program 1 times [2020-08-21 13:59:46,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:46,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858228902] [2020-08-21 13:59:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,254 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 13:59:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 13:59:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:46,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858228902] [2020-08-21 13:59:46,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:46,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:59:46,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254324141] [2020-08-21 13:59:46,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:59:46,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:46,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:59:46,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:59:46,341 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-08-21 13:59:46,733 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:47,903 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:48,342 INFO L93 Difference]: Finished difference Result 320 states and 390 transitions. [2020-08-21 13:59:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:59:48,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 13:59:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:48,346 INFO L225 Difference]: With dead ends: 320 [2020-08-21 13:59:48,346 INFO L226 Difference]: Without dead ends: 229 [2020-08-21 13:59:48,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:59:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-08-21 13:59:48,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 186. [2020-08-21 13:59:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-21 13:59:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2020-08-21 13:59:48,391 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 60 [2020-08-21 13:59:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:48,391 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2020-08-21 13:59:48,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:59:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2020-08-21 13:59:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 13:59:48,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:48,393 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] [2020-08-21 13:59:48,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:59:48,394 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash -468283367, now seen corresponding path program 1 times [2020-08-21 13:59:48,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:48,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73846585] [2020-08-21 13:59:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,677 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 13:59:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:59:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:48,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73846585] [2020-08-21 13:59:48,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:48,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:59:48,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104778019] [2020-08-21 13:59:48,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:59:48,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:59:48,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:59:48,832 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand 10 states. [2020-08-21 13:59:49,483 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:49,711 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:49,930 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:50,484 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:50,749 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:50,975 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:51,768 INFO L93 Difference]: Finished difference Result 392 states and 476 transitions. [2020-08-21 13:59:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:59:51,769 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-08-21 13:59:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:51,772 INFO L225 Difference]: With dead ends: 392 [2020-08-21 13:59:51,772 INFO L226 Difference]: Without dead ends: 230 [2020-08-21 13:59:51,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:59:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-21 13:59:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2020-08-21 13:59:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 13:59:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2020-08-21 13:59:51,821 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 74 [2020-08-21 13:59:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:51,821 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2020-08-21 13:59:51,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:59:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2020-08-21 13:59:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 13:59:51,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:51,823 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] [2020-08-21 13:59:51,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:59:51,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:51,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1903455895, now seen corresponding path program 1 times [2020-08-21 13:59:51,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:51,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458177678] [2020-08-21 13:59:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,153 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 13:59:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:59:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:52,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458177678] [2020-08-21 13:59:52,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:52,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:59:52,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734197938] [2020-08-21 13:59:52,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:59:52,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:52,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:59:52,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:52,263 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand 12 states. [2020-08-21 13:59:52,731 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:53,033 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:53,270 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:53,500 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:54,028 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:54,843 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:55,141 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:55,428 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:55,670 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:55,991 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:56,263 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:57,378 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:57,658 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:58,220 INFO L93 Difference]: Finished difference Result 680 states and 868 transitions. [2020-08-21 13:59:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:59:58,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-08-21 13:59:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:58,225 INFO L225 Difference]: With dead ends: 680 [2020-08-21 13:59:58,226 INFO L226 Difference]: Without dead ends: 514 [2020-08-21 13:59:58,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:59:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-08-21 13:59:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 452. [2020-08-21 13:59:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-21 13:59:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 523 transitions. [2020-08-21 13:59:58,311 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 523 transitions. Word has length 74 [2020-08-21 13:59:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:58,312 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 523 transitions. [2020-08-21 13:59:58,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:59:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 523 transitions. [2020-08-21 13:59:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 13:59:58,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:58,316 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, 1, 1, 1, 1] [2020-08-21 13:59:58,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:59:58,316 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2107961577, now seen corresponding path program 1 times [2020-08-21 13:59:58,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:58,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711565158] [2020-08-21 13:59:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,630 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:59:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:59:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:59:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 13:59:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 13:59:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:59:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:59:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 13:59:58,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711565158] [2020-08-21 13:59:58,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:58,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:59:58,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575164185] [2020-08-21 13:59:58,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:59:58,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:58,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:59:58,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:59:58,830 INFO L87 Difference]: Start difference. First operand 452 states and 523 transitions. Second operand 13 states. [2020-08-21 13:59:59,443 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:00,040 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:00,601 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:00,860 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:00:01,136 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:01,384 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:01,628 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:01,888 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:00:02,203 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:02,473 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:03,869 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:00:04,109 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:04,355 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:00:04,593 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:00:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:00:05,011 INFO L93 Difference]: Finished difference Result 815 states and 1025 transitions. [2020-08-21 14:00:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 14:00:05,012 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 14:00:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:00:05,019 INFO L225 Difference]: With dead ends: 815 [2020-08-21 14:00:05,019 INFO L226 Difference]: Without dead ends: 387 [2020-08-21 14:00:05,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 14:00:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-21 14:00:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 333. [2020-08-21 14:00:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-08-21 14:00:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 388 transitions. [2020-08-21 14:00:05,111 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 388 transitions. Word has length 130 [2020-08-21 14:00:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:00:05,112 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 388 transitions. [2020-08-21 14:00:05,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:00:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 388 transitions. [2020-08-21 14:00:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 14:00:05,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:00:05,115 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, 1, 1, 1, 1] [2020-08-21 14:00:05,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:00:05,115 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:00:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:00:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash 942189914, now seen corresponding path program 1 times [2020-08-21 14:00:05,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:00:05,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274008600] [2020-08-21 14:00:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:00:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,495 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:00:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:00:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:00:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:00:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:00:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:00:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:00:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:00:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:00:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:00:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:00:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:00:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 14:00:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 14:00:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 14:00:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:00:05,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274008600] [2020-08-21 14:00:05,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:00:05,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:00:05,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966678001] [2020-08-21 14:00:05,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:00:05,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:00:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:00:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:00:05,685 INFO L87 Difference]: Start difference. First operand 333 states and 388 transitions. Second operand 12 states. [2020-08-21 14:00:06,285 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:06,865 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:07,686 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:07,956 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:08,210 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:08,454 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:08,736 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:08,991 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:09,880 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:00:10,703 INFO L93 Difference]: Finished difference Result 783 states and 991 transitions. [2020-08-21 14:00:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 14:00:10,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 14:00:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:00:10,710 INFO L225 Difference]: With dead ends: 783 [2020-08-21 14:00:10,712 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 14:00:10,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-21 14:00:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 14:00:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 439. [2020-08-21 14:00:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-08-21 14:00:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 520 transitions. [2020-08-21 14:00:10,830 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 520 transitions. Word has length 130 [2020-08-21 14:00:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:00:10,831 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 520 transitions. [2020-08-21 14:00:10,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:00:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 520 transitions. [2020-08-21 14:00:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-21 14:00:10,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:00:10,838 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, 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] [2020-08-21 14:00:10,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:00:10,838 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:00:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:00:10,838 INFO L82 PathProgramCache]: Analyzing trace with hash 223073758, now seen corresponding path program 2 times [2020-08-21 14:00:10,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:00:10,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807904596] [2020-08-21 14:00:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:00:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:00:10,914 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:00:10,914 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:00:10,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:00:10,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:00:10 BoogieIcfgContainer [2020-08-21 14:00:10,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:00:10,959 INFO L168 Benchmark]: Toolchain (without parser) took 33306.18 ms. Allocated memory was 140.5 MB in the beginning and 639.6 MB in the end (delta: 499.1 MB). Free memory was 101.5 MB in the beginning and 212.0 MB in the end (delta: -110.5 MB). Peak memory consumption was 388.6 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:10,960 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:00:10,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.61 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 170.1 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:10,961 INFO L168 Benchmark]: Boogie Preprocessor took 89.03 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 166.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:10,962 INFO L168 Benchmark]: RCFGBuilder took 1198.54 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.7 MB in the beginning and 194.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:10,963 INFO L168 Benchmark]: TraceAbstraction took 31368.51 ms. Allocated memory was 235.9 MB in the beginning and 639.6 MB in the end (delta: 403.7 MB). Free memory was 194.2 MB in the beginning and 212.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 385.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:10,967 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 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.61 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 170.1 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.03 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 166.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1198.54 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.7 MB in the beginning and 194.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31368.51 ms. Allocated memory was 235.9 MB in the beginning and 639.6 MB in the end (delta: 403.7 MB). Free memory was 194.2 MB in the beginning and 212.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 385.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; [L649] int retValue_acc ; [L650] int tmp ; [L654] FCALL select_helpers() [L655] FCALL select_features() [L656] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L656] RET, EXPR valid_product() [L656] tmp = valid_product() [L658] COND TRUE \read(tmp) [L660] FCALL setup() [L661] CALL runTest() [L643] CALL test() [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] splverifierCounter = 0 [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND TRUE \read(tmp) [L695] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L695] RET waterRise() [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND FALSE !(\read(pumpRunning)) [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND TRUE ! pumpRunning [L783] CALL, EXPR isHighWaterLevel() [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; [L899] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L899] RET, EXPR isHighWaterSensorDry() [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); [L783] RET, EXPR isHighWaterLevel() [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) [L787] CALL activatePump() [L812] int tmp ; [L816] CALL, EXPR isMethaneAlarm() [L837] int retValue_acc ; [L841] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L841] RET, EXPR isMethaneLevelCritical() [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); [L816] RET, EXPR isMethaneAlarm() [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) [L822] CALL activatePump__wrappee__highWaterSensor() [L806] pumpRunning = 1 [L822] RET activatePump__wrappee__highWaterSensor() [L787] RET activatePump() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 [L557] CALL, EXPR isPumpRunning() [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); [L557] RET, EXPR isPumpRunning() [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) [L561] CALL __automaton_fail() [L924] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.2s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 26.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 938 SDtfs, 1885 SDslu, 1149 SDs, 0 SdLazy, 5693 SolverSat, 1264 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=452occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 377 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 779 NumberOfCodeBlocks, 779 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 605 ConstructedInterpolants, 0 QuantifiedInterpolants, 204121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/50 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...