/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:49:26,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:49:26,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:49:26,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:49:26,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:49:26,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:49:26,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:49:26,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:49:26,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:49:26,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:49:26,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:49:26,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:49:26,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:49:26,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:49:26,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:49:26,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:49:26,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:49:26,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:49:26,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:49:26,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:49:26,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:49:26,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:49:26,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:49:26,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:49:26,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:49:26,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:49:26,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:49:26,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:49:26,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:49:26,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:49:26,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:49:26,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:49:26,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:49:26,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:49:26,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:49:26,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:49:26,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:49:26,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:49:26,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:49:26,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:49:26,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:49:26,451 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 22:49:26,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:49:26,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:49:26,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:49:26,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:49:26,494 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:49:26,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:49:26,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:49:26,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:49:26,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:49:26,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:49:26,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:49:26,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:49:26,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:49:26,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:49:26,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:49:26,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:49:26,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:49:26,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:49:26,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:49:26,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:49:26,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:49:26,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:49:26,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:49:26,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:49:26,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:49:26,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:49:26,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:49:26,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:49:26,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:49:26,500 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:49:26,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:49:26,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:49:26,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:49:26,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:49:26,812 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:49:26,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-21 22:49:26,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6701dde01/e53bb21518a1486586fee6e95d3b9ed6/FLAGf11887c9c [2020-08-21 22:49:27,461 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:49:27,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-21 22:49:27,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6701dde01/e53bb21518a1486586fee6e95d3b9ed6/FLAGf11887c9c [2020-08-21 22:49:27,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6701dde01/e53bb21518a1486586fee6e95d3b9ed6 [2020-08-21 22:49:27,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:49:27,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:49:27,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:49:27,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:49:27,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:49:27,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:49:27" (1/1) ... [2020-08-21 22:49:27,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:27, skipping insertion in model container [2020-08-21 22:49:27,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:49:27" (1/1) ... [2020-08-21 22:49:27,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:49:27,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:49:28,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:49:28,245 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:49:28,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:49:28,368 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:49:28,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28 WrapperNode [2020-08-21 22:49:28,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:49:28,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:49:28,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:49:28,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:49:28,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (1/1) ... [2020-08-21 22:49:28,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:49:28,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:49:28,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:49:28,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:49:28,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (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 22:49:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:49:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:49:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:49:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:49:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:49:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:49:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:49:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:49:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:49:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:49:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:49:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:49:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:49:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:49:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:49:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:49:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:49:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:49:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:49:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:49:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:49:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:49:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:49:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:49:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:49:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:49:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:49:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:49:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:49:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:49:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:49:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:49:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:49:28,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:49:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:49:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:49:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:49:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:49:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:49:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:49:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:49:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:49:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:49:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:49:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:49:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:49:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:49:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:49:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:49:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:49:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:49:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:49:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:49:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:49:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:49:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:49:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:49:28,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:49:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:49:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:49:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:49:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:49:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:49:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:49:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:49:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:49:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:49:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:49:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:49:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:49:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:49:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:49:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:49:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:49:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:49:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:49:29,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:49:29,697 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:49:29,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:49:29 BoogieIcfgContainer [2020-08-21 22:49:29,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:49:29,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:49:29,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:49:29,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:49:29,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:49:27" (1/3) ... [2020-08-21 22:49:29,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486031ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:49:29, skipping insertion in model container [2020-08-21 22:49:29,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:28" (2/3) ... [2020-08-21 22:49:29,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486031ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:49:29, skipping insertion in model container [2020-08-21 22:49:29,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:49:29" (3/3) ... [2020-08-21 22:49:29,712 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-08-21 22:49:29,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:49:29,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:49:29,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:49:29,772 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:49:29,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:49:29,773 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:49:29,773 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:49:29,773 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:49:29,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:49:29,774 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:49:29,774 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:49:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-21 22:49:29,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:49:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:29,810 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 22:49:29,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1671120280, now seen corresponding path program 1 times [2020-08-21 22:49:29,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:29,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002181203] [2020-08-21 22:49:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,559 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:49:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:49:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:49:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:30,691 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 22:49:30,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002181203] [2020-08-21 22:49:30,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:30,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:49:30,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254874610] [2020-08-21 22:49:30,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:49:30,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:49:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:49:30,722 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 3 states. [2020-08-21 22:49:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:31,977 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-21 22:49:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:49:31,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:49:31,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:31,993 INFO L225 Difference]: With dead ends: 329 [2020-08-21 22:49:31,994 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 22:49:31,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 22:49:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 22:49:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 142. [2020-08-21 22:49:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-21 22:49:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2020-08-21 22:49:32,096 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 52 [2020-08-21 22:49:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:32,097 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2020-08-21 22:49:32,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:49:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2020-08-21 22:49:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:49:32,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:32,102 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 22:49:32,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:49:32,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:32,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:32,103 INFO L82 PathProgramCache]: Analyzing trace with hash -374509178, now seen corresponding path program 1 times [2020-08-21 22:49:32,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:32,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109685548] [2020-08-21 22:49:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,469 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:32,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:49:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:49:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:49:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:32,513 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 22:49:32,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109685548] [2020-08-21 22:49:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:32,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:49:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453410218] [2020-08-21 22:49:32,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:49:32,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:49:32,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:49:32,517 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand 4 states. [2020-08-21 22:49:32,958 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:49:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:33,814 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2020-08-21 22:49:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:49:33,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:49:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:33,819 INFO L225 Difference]: With dead ends: 256 [2020-08-21 22:49:33,819 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 22:49:33,821 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 22:49:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 22:49:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-21 22:49:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 22:49:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-21 22:49:33,864 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 53 [2020-08-21 22:49:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:33,864 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-21 22:49:33,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:49:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-21 22:49:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:49:33,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:33,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:49:33,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:49:33,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash 299348801, now seen corresponding path program 1 times [2020-08-21 22:49:33,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:33,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134459189] [2020-08-21 22:49:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,184 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:49:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:49:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:49:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:34,263 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 22:49:34,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134459189] [2020-08-21 22:49:34,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:34,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:49:34,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306067913] [2020-08-21 22:49:34,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:49:34,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:34,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:49:34,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:49:34,266 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 8 states. [2020-08-21 22:49:34,675 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:34,966 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:35,226 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:35,479 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:36,188 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:49:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:38,122 INFO L93 Difference]: Finished difference Result 461 states and 574 transitions. [2020-08-21 22:49:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:49:38,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 22:49:38,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:38,128 INFO L225 Difference]: With dead ends: 461 [2020-08-21 22:49:38,129 INFO L226 Difference]: Without dead ends: 352 [2020-08-21 22:49:38,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:49:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-08-21 22:49:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 290. [2020-08-21 22:49:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-21 22:49:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 353 transitions. [2020-08-21 22:49:38,210 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 353 transitions. Word has length 57 [2020-08-21 22:49:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:38,210 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 353 transitions. [2020-08-21 22:49:38,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:49:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 353 transitions. [2020-08-21 22:49:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 22:49:38,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:38,214 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 22:49:38,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:49:38,215 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:38,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1748947784, now seen corresponding path program 1 times [2020-08-21 22:49:38,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:38,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461540561] [2020-08-21 22:49:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,512 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:49:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:49:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:49:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:49:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:38,599 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 22:49:38,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461540561] [2020-08-21 22:49:38,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:38,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:49:38,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825032450] [2020-08-21 22:49:38,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:49:38,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:49:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:49:38,603 INFO L87 Difference]: Start difference. First operand 290 states and 353 transitions. Second operand 8 states. [2020-08-21 22:49:39,050 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:40,390 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:40,747 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:41,028 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:41,291 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:42,297 INFO L93 Difference]: Finished difference Result 898 states and 1181 transitions. [2020-08-21 22:49:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:49:42,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 22:49:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:42,305 INFO L225 Difference]: With dead ends: 898 [2020-08-21 22:49:42,306 INFO L226 Difference]: Without dead ends: 632 [2020-08-21 22:49:42,309 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 22:49:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-08-21 22:49:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 561. [2020-08-21 22:49:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-08-21 22:49:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 695 transitions. [2020-08-21 22:49:42,443 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 695 transitions. Word has length 63 [2020-08-21 22:49:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:42,444 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 695 transitions. [2020-08-21 22:49:42,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:49:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 695 transitions. [2020-08-21 22:49:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:49:42,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:42,448 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 22:49:42,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:49:42,449 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:42,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1730478350, now seen corresponding path program 1 times [2020-08-21 22:49:42,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:42,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071877093] [2020-08-21 22:49:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,726 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:49:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:49:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:49:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:49:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 22:49:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:42,798 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 22:49:42,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071877093] [2020-08-21 22:49:42,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:42,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:49:42,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374521085] [2020-08-21 22:49:42,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:49:42,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:42,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:49:42,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:49:42,800 INFO L87 Difference]: Start difference. First operand 561 states and 695 transitions. Second operand 6 states. [2020-08-21 22:49:43,152 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:44,925 INFO L93 Difference]: Finished difference Result 1358 states and 1768 transitions. [2020-08-21 22:49:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:49:44,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 22:49:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:44,934 INFO L225 Difference]: With dead ends: 1358 [2020-08-21 22:49:44,935 INFO L226 Difference]: Without dead ends: 821 [2020-08-21 22:49:44,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:49:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-08-21 22:49:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 751. [2020-08-21 22:49:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-08-21 22:49:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 914 transitions. [2020-08-21 22:49:45,086 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 914 transitions. Word has length 67 [2020-08-21 22:49:45,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:45,086 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 914 transitions. [2020-08-21 22:49:45,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:49:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 914 transitions. [2020-08-21 22:49:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:49:45,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:45,089 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 22:49:45,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:49:45,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash -145060242, now seen corresponding path program 1 times [2020-08-21 22:49:45,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:45,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978292221] [2020-08-21 22:49:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:49:45,150 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:49:45,150 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:49:45,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:49:45,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:49:45 BoogieIcfgContainer [2020-08-21 22:49:45,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:49:45,182 INFO L168 Benchmark]: Toolchain (without parser) took 17442.33 ms. Allocated memory was 149.4 MB in the beginning and 481.8 MB in the end (delta: 332.4 MB). Free memory was 104.5 MB in the beginning and 178.5 MB in the end (delta: -74.0 MB). Peak memory consumption was 258.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:45,183 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:49:45,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.48 ms. Allocated memory was 149.4 MB in the beginning and 205.5 MB in the end (delta: 56.1 MB). Free memory was 104.3 MB in the beginning and 171.6 MB in the end (delta: -67.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:45,185 INFO L168 Benchmark]: Boogie Preprocessor took 97.75 ms. Allocated memory is still 205.5 MB. Free memory was 171.6 MB in the beginning and 167.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:45,186 INFO L168 Benchmark]: RCFGBuilder took 1234.71 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 167.7 MB in the beginning and 185.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:45,187 INFO L168 Benchmark]: TraceAbstraction took 15476.38 ms. Allocated memory was 233.8 MB in the beginning and 481.8 MB in the end (delta: 248.0 MB). Free memory was 185.9 MB in the beginning and 178.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 255.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:45,190 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.48 ms. Allocated memory was 149.4 MB in the beginning and 205.5 MB in the end (delta: 56.1 MB). Free memory was 104.3 MB in the beginning and 171.6 MB in the end (delta: -67.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.75 ms. Allocated memory is still 205.5 MB. Free memory was 171.6 MB in the beginning and 167.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1234.71 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 167.7 MB in the beginning and 185.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15476.38 ms. Allocated memory was 233.8 MB in the beginning and 481.8 MB in the end (delta: 248.0 MB). Free memory was 185.9 MB in the beginning and 178.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 255.4 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: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) [L577] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L577] RET waterRise() [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) [L603] CALL stopSystem() [L828] COND FALSE !(\read(pumpRunning)) [L835] systemActive = 0 [L603] RET stopSystem() [L610] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND FALSE !(\read(systemActive)) [L652] CALL __utac_acc__Specification3_spec__1() [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L942] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] RET, EXPR isMethaneLevelCritical() [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L948] CALL, EXPR getWaterLevel() [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] RET, EXPR getWaterLevel() [L948] tmp___0 = getWaterLevel() [L950] COND TRUE tmp___0 == 2 [L952] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L952] RET, EXPR isPumpRunning() [L952] tmp___1 = isPumpRunning() [L954] COND FALSE !(\read(tmp___1)) [L958] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 241 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 1067 SDslu, 449 SDs, 0 SdLazy, 2480 SolverSat, 664 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=751occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 268 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...