/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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_spec3_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:00:56,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:00:56,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:00:56,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:00:56,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:00:56,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:00:56,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:00:56,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:00:56,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:00:56,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:00:56,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:00:56,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:00:56,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:00:56,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:00:56,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:00:56,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:00:56,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:00:56,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:00:56,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:00:56,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:00:56,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:00:56,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:00:56,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:00:56,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:00:56,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:00:56,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:00:56,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:00:56,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:00:56,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:00:56,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:00:56,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:00:56,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:00:56,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:00:56,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:00:56,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:00:56,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:00:56,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:00:56,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:00:56,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:00:56,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:00:56,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:00:56,407 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 22:00:56,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:00:56,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:00:56,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:00:56,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:00:56,433 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:00:56,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:00:56,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:00:56,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:00:56,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:00:56,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:00:56,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:00:56,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:00:56,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:00:56,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:00:56,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:00:56,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:00:56,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:00:56,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:00:56,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:00:56,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:00:56,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:00:56,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:00:56,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:00:56,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:00:56,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:00:56,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:00:56,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:00:56,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:00:56,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:00:56,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:00:56,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:00:56,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:00:56,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:00:56,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:00:56,779 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:00:56,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-21 22:00:56,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59a0c044a/dd48f5e4fbc84eef8d69932d3e762bc1/FLAG03eea8c5a [2020-08-21 22:00:57,420 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:00:57,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-21 22:00:57,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59a0c044a/dd48f5e4fbc84eef8d69932d3e762bc1/FLAG03eea8c5a [2020-08-21 22:00:57,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59a0c044a/dd48f5e4fbc84eef8d69932d3e762bc1 [2020-08-21 22:00:57,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:00:57,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:00:57,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:00:57,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:00:57,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:00:57,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:00:57" (1/1) ... [2020-08-21 22:00:57,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:57, skipping insertion in model container [2020-08-21 22:00:57,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:00:57" (1/1) ... [2020-08-21 22:00:57,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:00:57,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:00:58,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:00:58,209 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:00:58,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:00:58,419 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:00:58,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58 WrapperNode [2020-08-21 22:00:58,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:00:58,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:00:58,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:00:58,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:00:58,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (1/1) ... [2020-08-21 22:00:58,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:00:58,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:00:58,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:00:58,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:00:58,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (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 22:00:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:00:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:00:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:00:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:00:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:00:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:00:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:00:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:00:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:00:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:00:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:00:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:00:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:00:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:00:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:00:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:00:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:00:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:00:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:00:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:00:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:00:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:00:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:00:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:00:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:00:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:00:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:00:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:00:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:00:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:00:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:00:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:00:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:00:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:00:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:00:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:00:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:00:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:00:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:00:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:00:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:00:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:00:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:00:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:00:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:00:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:00:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:00:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:00:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:00:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:00:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:00:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:00:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:00:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:00:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:00:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:00:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:00:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:00:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:00:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:00:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:00:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:00:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:00:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:00:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:00:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:00:59,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:00:59,689 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:00:59,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:00:59 BoogieIcfgContainer [2020-08-21 22:00:59,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:00:59,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:00:59,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:00:59,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:00:59,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:00:57" (1/3) ... [2020-08-21 22:00:59,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d69dd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:00:59, skipping insertion in model container [2020-08-21 22:00:59,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:58" (2/3) ... [2020-08-21 22:00:59,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d69dd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:00:59, skipping insertion in model container [2020-08-21 22:00:59,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:00:59" (3/3) ... [2020-08-21 22:00:59,704 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2020-08-21 22:00:59,715 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:00:59,723 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:00:59,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:00:59,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:00:59,761 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:00:59,761 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:00:59,761 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:00:59,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:00:59,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:00:59,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:00:59,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:00:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-21 22:00:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:00:59,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:59,805 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 22:00:59,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1986683117, now seen corresponding path program 1 times [2020-08-21 22:00:59,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:59,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393523894] [2020-08-21 22:00:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,565 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:01:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:01:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:01:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,708 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 22:01:00,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393523894] [2020-08-21 22:01:00,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:00,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:01:00,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16105169] [2020-08-21 22:01:00,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:01:00,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:00,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:01:00,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:01:00,738 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2020-08-21 22:01:02,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:02,045 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-21 22:01:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:01:02,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:01:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:02,062 INFO L225 Difference]: With dead ends: 338 [2020-08-21 22:01:02,063 INFO L226 Difference]: Without dead ends: 183 [2020-08-21 22:01:02,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:01:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-21 22:01:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-08-21 22:01:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-21 22:01:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-21 22:01:02,161 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-21 22:01:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:02,161 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-21 22:01:02,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:01:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-21 22:01:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:01:02,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:02,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:02,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:01:02,166 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:02,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1294331280, now seen corresponding path program 1 times [2020-08-21 22:01:02,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:02,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522119292] [2020-08-21 22:01:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,488 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:01:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:01:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:01:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:02,533 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 22:01:02,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522119292] [2020-08-21 22:01:02,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:02,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:01:02,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242337163] [2020-08-21 22:01:02,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:01:02,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:01:02,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:01:02,537 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 4 states. [2020-08-21 22:01:02,917 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:03,823 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-08-21 22:01:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:01:03,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:01:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:03,828 INFO L225 Difference]: With dead ends: 261 [2020-08-21 22:01:03,829 INFO L226 Difference]: Without dead ends: 167 [2020-08-21 22:01:03,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:01:03,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-21 22:01:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 137. [2020-08-21 22:01:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 22:01:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2020-08-21 22:01:03,896 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 53 [2020-08-21 22:01:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:03,897 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2020-08-21 22:01:03,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:01:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2020-08-21 22:01:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 22:01:03,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:03,900 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] [2020-08-21 22:01:03,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:01:03,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash 89991443, now seen corresponding path program 1 times [2020-08-21 22:01:03,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:03,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760117683] [2020-08-21 22:01:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,189 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:04,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:01:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:01:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:01:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:04,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760117683] [2020-08-21 22:01:04,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:04,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:04,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088240823] [2020-08-21 22:01:04,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:04,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:04,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:04,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:04,335 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand 8 states. [2020-08-21 22:01:04,666 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:05,011 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:05,252 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:05,473 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:06,214 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:08,307 INFO L93 Difference]: Finished difference Result 476 states and 591 transitions. [2020-08-21 22:01:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:01:08,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 22:01:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:08,331 INFO L225 Difference]: With dead ends: 476 [2020-08-21 22:01:08,332 INFO L226 Difference]: Without dead ends: 363 [2020-08-21 22:01:08,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:01:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-21 22:01:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 294. [2020-08-21 22:01:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 22:01:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2020-08-21 22:01:08,411 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 58 [2020-08-21 22:01:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:08,412 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2020-08-21 22:01:08,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2020-08-21 22:01:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 22:01:08,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:08,416 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] [2020-08-21 22:01:08,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:01:08,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:08,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:08,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1771452602, now seen corresponding path program 1 times [2020-08-21 22:01:08,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:08,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042811060] [2020-08-21 22:01:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,699 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:08,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:01:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:01:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:01:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:01:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:08,807 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 22:01:08,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042811060] [2020-08-21 22:01:08,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:08,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:08,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157092000] [2020-08-21 22:01:08,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:08,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:08,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:08,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:08,810 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand 8 states. [2020-08-21 22:01:09,142 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:10,480 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:10,863 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:11,157 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:11,396 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:12,391 INFO L93 Difference]: Finished difference Result 913 states and 1199 transitions. [2020-08-21 22:01:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:01:12,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 22:01:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:12,401 INFO L225 Difference]: With dead ends: 913 [2020-08-21 22:01:12,401 INFO L226 Difference]: Without dead ends: 643 [2020-08-21 22:01:12,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:01:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-08-21 22:01:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 569. [2020-08-21 22:01:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-08-21 22:01:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2020-08-21 22:01:12,562 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 63 [2020-08-21 22:01:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:12,563 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2020-08-21 22:01:12,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2020-08-21 22:01:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:01:12,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:12,569 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] [2020-08-21 22:01:12,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:01:12,569 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:12,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1282483756, now seen corresponding path program 1 times [2020-08-21 22:01:12,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:12,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482543478] [2020-08-21 22:01:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:01:12,633 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:01:12,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:01:12,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:01:12,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:01:12 BoogieIcfgContainer [2020-08-21 22:01:12,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:01:12,664 INFO L168 Benchmark]: Toolchain (without parser) took 14930.67 ms. Allocated memory was 147.3 MB in the beginning and 475.0 MB in the end (delta: 327.7 MB). Free memory was 101.9 MB in the beginning and 385.2 MB in the end (delta: -283.3 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:12,665 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:01:12,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.44 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 171.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:12,666 INFO L168 Benchmark]: Boogie Preprocessor took 114.47 ms. Allocated memory is still 202.9 MB. Free memory was 171.4 MB in the beginning and 167.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:12,667 INFO L168 Benchmark]: RCFGBuilder took 1159.58 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 167.3 MB in the beginning and 197.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:12,668 INFO L168 Benchmark]: TraceAbstraction took 12965.43 ms. Allocated memory was 237.0 MB in the beginning and 475.0 MB in the end (delta: 238.0 MB). Free memory was 197.3 MB in the beginning and 385.2 MB in the end (delta: -188.0 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:12,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.44 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 171.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.47 ms. Allocated memory is still 202.9 MB. Free memory was 171.4 MB in the beginning and 167.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1159.58 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 167.3 MB in the beginning and 197.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12965.43 ms. Allocated memory was 237.0 MB in the beginning and 475.0 MB in the end (delta: 238.0 MB). Free memory was 197.3 MB in the beginning and 385.2 MB in the end (delta: -188.0 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L129] int waterLevel = 1; [L130] int methaneLevelCritical = 0; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L447] int cleanupTimeShifts = 4; [L782] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L521] int retValue_acc ; [L522] int tmp ; [L526] FCALL select_helpers() [L527] FCALL select_features() [L528] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L528] RET, EXPR valid_product() [L528] tmp = valid_product() [L530] COND TRUE \read(tmp) [L532] FCALL setup() [L533] CALL runTest() [L515] CALL test() [L545] int splverifierCounter ; [L546] int tmp ; [L547] int tmp___0 ; [L548] int tmp___1 ; [L549] int tmp___2 ; [L552] splverifierCounter = 0 [L554] COND TRUE 1 [L556] COND TRUE splverifierCounter < 4 [L562] tmp = __VERIFIER_nondet_int() [L564] COND TRUE \read(tmp) [L566] CALL waterRise() [L147] COND TRUE waterLevel < 2 [L148] waterLevel = waterLevel + 1 [L566] RET waterRise() [L572] tmp___0 = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp___0)) [L582] tmp___2 = __VERIFIER_nondet_int() [L584] COND FALSE !(\read(tmp___2)) [L590] tmp___1 = __VERIFIER_nondet_int() [L592] COND TRUE \read(tmp___1) [L594] CALL stopSystem() [L427] COND FALSE !(\read(pumpRunning)) [L434] systemActive = 0 [L594] RET stopSystem() [L601] CALL timeShift() [L236] COND FALSE !(\read(pumpRunning)) [L243] COND FALSE !(\read(systemActive)) [L251] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L168] int retValue_acc ; [L171] retValue_acc = methaneLevelCritical [L172] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L200] int retValue_acc ; [L203] retValue_acc = waterLevel [L204] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L360] int retValue_acc ; [L363] retValue_acc = pumpRunning [L364] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 890 SDslu, 393 SDs, 0 SdLazy, 2136 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...