/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=SMALLESTAMONGWIDE --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_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:43:06,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:43:06,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:43:06,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:43:06,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:43:06,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:43:06,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:43:06,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:43:06,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:43:06,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:43:06,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:43:06,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:43:06,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:43:06,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:43:06,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:43:06,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:43:06,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:43:06,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:43:06,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:43:06,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:43:06,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:43:06,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:43:06,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:43:06,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:43:06,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:43:06,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:43:06,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:43:06,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:43:06,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:43:06,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:43:06,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:43:06,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:43:06,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:43:06,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:43:06,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:43:06,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:43:06,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:43:06,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:43:06,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:43:06,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:43:06,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:43:06,646 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 [2020-08-22 03:43:06,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:43:06,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:43:06,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:43:06,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:43:06,685 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:43:06,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:43:06,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:43:06,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:43:06,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:43:06,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:43:06,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:43:06,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:43:06,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:43:06,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:43:06,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:43:06,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:43:06,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:43:06,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:43:06,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:43:06,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:43:06,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:43:06,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:43:06,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:43:06,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:43:06,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:43:06,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:43:06,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:43:06,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:43:06,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:43:06,693 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:43:07,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:43:07,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:43:07,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:43:07,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:43:07,043 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:43:07,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-22 03:43:07,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42fa1a56/c98dc0df1e8f4c63891f784114b202d2/FLAG537f6963b [2020-08-22 03:43:07,726 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:43:07,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-22 03:43:07,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42fa1a56/c98dc0df1e8f4c63891f784114b202d2/FLAG537f6963b [2020-08-22 03:43:07,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42fa1a56/c98dc0df1e8f4c63891f784114b202d2 [2020-08-22 03:43:07,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:43:07,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:43:07,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:07,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:43:07,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:43:07,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:07" (1/1) ... [2020-08-22 03:43:07,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18283abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:07, skipping insertion in model container [2020-08-22 03:43:07,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:07" (1/1) ... [2020-08-22 03:43:07,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:43:08,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:43:08,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:08,484 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:43:08,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:08,606 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:43:08,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08 WrapperNode [2020-08-22 03:43:08,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:08,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:43:08,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:43:08,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:43:08,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (1/1) ... [2020-08-22 03:43:08,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:43:08,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:43:08,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:43:08,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:43:08,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (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 [2020-08-22 03:43:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:43:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:43:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:43:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:43:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:43:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:43:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:43:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:43:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:43:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:43:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:43:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:43:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:43:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:43:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:43:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:43:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:43:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:43:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:43:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:43:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:43:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:43:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:43:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:43:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:43:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:43:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:43:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:43:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:43:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:43:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:43:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:43:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:43:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:43:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:43:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:43:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:43:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:43:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:43:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:43:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:43:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:43:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:43:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:43:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:43:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:43:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:43:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:43:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:43:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:43:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:43:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:43:09,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:43:09,872 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:43:09,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:09 BoogieIcfgContainer [2020-08-22 03:43:09,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:43:09,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:43:09,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:43:09,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:43:09,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:43:07" (1/3) ... [2020-08-22 03:43:09,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aab9979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:09, skipping insertion in model container [2020-08-22 03:43:09,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:08" (2/3) ... [2020-08-22 03:43:09,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aab9979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:09, skipping insertion in model container [2020-08-22 03:43:09,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:09" (3/3) ... [2020-08-22 03:43:09,894 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-08-22 03:43:09,904 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:43:09,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:43:09,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:43:09,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:43:09,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:43:09,963 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:43:09,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:43:09,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:43:09,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:43:09,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:43:09,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:43:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-08-22 03:43:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:43:09,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:09,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:09,995 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:10,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:10,000 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-08-22 03:43:10,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:10,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672525401] [2020-08-22 03:43:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,681 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:43:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:43:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:10,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672525401] [2020-08-22 03:43:10,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:10,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:43:10,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553093642] [2020-08-22 03:43:10,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:43:10,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:43:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:43:10,797 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-08-22 03:43:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:11,857 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-08-22 03:43:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:43:11,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:43:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:11,874 INFO L225 Difference]: With dead ends: 281 [2020-08-22 03:43:11,874 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 03:43:11,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:43:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 03:43:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-08-22 03:43:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 03:43:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-22 03:43:11,964 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-08-22 03:43:11,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:11,965 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-22 03:43:11,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:43:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-22 03:43:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:43:11,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:11,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:11,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:43:11,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:11,970 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-08-22 03:43:11,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:11,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156699409] [2020-08-22 03:43:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,356 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:43:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:12,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156699409] [2020-08-22 03:43:12,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:12,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:43:12,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341378516] [2020-08-22 03:43:12,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:43:12,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:12,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:43:12,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:43:12,425 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-08-22 03:43:12,891 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:13,575 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-08-22 03:43:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:43:13,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:43:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:13,584 INFO L225 Difference]: With dead ends: 214 [2020-08-22 03:43:13,584 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 03:43:13,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:43:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 03:43:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-22 03:43:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 03:43:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-08-22 03:43:13,622 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-08-22 03:43:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:13,622 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-08-22 03:43:13,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:43:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-08-22 03:43:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:43:13,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:13,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:13,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:43:13,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:13,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-08-22 03:43:13,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:13,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948039999] [2020-08-22 03:43:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,926 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:43:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:14,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948039999] [2020-08-22 03:43:14,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:14,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:43:14,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978843681] [2020-08-22 03:43:14,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:43:14,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:14,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:43:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:43:14,008 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-08-22 03:43:14,362 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:14,652 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:14,892 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:15,139 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:16,162 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-08-22 03:43:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:43:16,163 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 03:43:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:16,166 INFO L225 Difference]: With dead ends: 223 [2020-08-22 03:43:16,166 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 03:43:16,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 03:43:16,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-22 03:43:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 03:43:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-08-22 03:43:16,199 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-08-22 03:43:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:16,200 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-08-22 03:43:16,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:43:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-08-22 03:43:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 03:43:16,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:16,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:16,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:43:16,203 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-08-22 03:43:16,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:16,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321187888] [2020-08-22 03:43:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,454 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 03:43:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:43:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 03:43:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:16,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321187888] [2020-08-22 03:43:16,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:16,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:43:16,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698595099] [2020-08-22 03:43:16,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:43:16,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:16,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:43:16,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:43:16,538 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-08-22 03:43:16,842 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:18,055 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:18,499 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-08-22 03:43:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:43:18,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 03:43:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:18,503 INFO L225 Difference]: With dead ends: 306 [2020-08-22 03:43:18,503 INFO L226 Difference]: Without dead ends: 219 [2020-08-22 03:43:18,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-08-22 03:43:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-08-22 03:43:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-22 03:43:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-08-22 03:43:18,562 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-08-22 03:43:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:18,562 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-08-22 03:43:18,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:43:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-08-22 03:43:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 03:43:18,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:18,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:18,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:43:18,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:18,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-08-22 03:43:18,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:18,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683401978] [2020-08-22 03:43:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,843 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 03:43:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 03:43:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 03:43:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:18,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683401978] [2020-08-22 03:43:18,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:18,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:43:18,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282000945] [2020-08-22 03:43:18,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:43:18,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:18,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:43:18,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:18,951 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 10 states. [2020-08-22 03:43:19,440 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:19,713 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:19,930 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:20,448 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:20,686 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:20,939 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:21,709 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-08-22 03:43:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:43:21,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-08-22 03:43:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:21,713 INFO L225 Difference]: With dead ends: 374 [2020-08-22 03:43:21,714 INFO L226 Difference]: Without dead ends: 220 [2020-08-22 03:43:21,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-22 03:43:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-22 03:43:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-08-22 03:43:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-22 03:43:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-08-22 03:43:21,758 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-08-22 03:43:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:21,758 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-08-22 03:43:21,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:43:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-08-22 03:43:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 03:43:21,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:21,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:21,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:43:21,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-08-22 03:43:21,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:21,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128845362] [2020-08-22 03:43:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,061 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 03:43:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 03:43:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 03:43:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:22,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128845362] [2020-08-22 03:43:22,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:22,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:43:22,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67772046] [2020-08-22 03:43:22,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:22,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:22,190 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-08-22 03:43:22,684 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:22,974 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:23,211 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:23,442 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:23,931 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:24,747 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:25,035 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:25,298 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:25,532 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:25,867 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:26,136 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:27,199 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:27,513 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:28,098 INFO L93 Difference]: Finished difference Result 644 states and 828 transitions. [2020-08-22 03:43:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 03:43:28,098 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-22 03:43:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:28,104 INFO L225 Difference]: With dead ends: 644 [2020-08-22 03:43:28,104 INFO L226 Difference]: Without dead ends: 486 [2020-08-22 03:43:28,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 03:43:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-22 03:43:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2020-08-22 03:43:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-22 03:43:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 499 transitions. [2020-08-22 03:43:28,188 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 499 transitions. Word has length 73 [2020-08-22 03:43:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:28,189 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 499 transitions. [2020-08-22 03:43:28,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 499 transitions. [2020-08-22 03:43:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 03:43:28,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:28,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:28,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:43:28,195 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:28,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:28,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233311, now seen corresponding path program 1 times [2020-08-22 03:43:28,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:28,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644470188] [2020-08-22 03:43:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,495 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:43:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 03:43:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 03:43:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 03:43:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 03:43:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 03:43:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 03:43:28,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644470188] [2020-08-22 03:43:28,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:28,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:43:28,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582789743] [2020-08-22 03:43:28,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:43:28,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:28,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:43:28,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:43:28,804 INFO L87 Difference]: Start difference. First operand 428 states and 499 transitions. Second operand 13 states. [2020-08-22 03:43:29,547 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:30,136 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:30,634 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:30,930 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 03:43:31,206 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:31,451 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:31,682 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:31,935 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 03:43:32,207 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:32,437 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:33,729 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:33,969 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:43:34,223 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:34,461 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:34,868 INFO L93 Difference]: Finished difference Result 767 states and 973 transitions. [2020-08-22 03:43:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 03:43:34,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-22 03:43:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:34,873 INFO L225 Difference]: With dead ends: 767 [2020-08-22 03:43:34,873 INFO L226 Difference]: Without dead ends: 363 [2020-08-22 03:43:34,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 03:43:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-22 03:43:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2020-08-22 03:43:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-22 03:43:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2020-08-22 03:43:34,933 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 132 [2020-08-22 03:43:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:34,934 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2020-08-22 03:43:34,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:43:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2020-08-22 03:43:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 03:43:34,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:34,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:34,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:43:34,938 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:34,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1980525114, now seen corresponding path program 1 times [2020-08-22 03:43:34,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:34,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057708965] [2020-08-22 03:43:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,241 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:35,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:43:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 03:43:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:43:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 03:43:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 03:43:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:43:35,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057708965] [2020-08-22 03:43:35,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:35,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:43:35,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825706767] [2020-08-22 03:43:35,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:35,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:35,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:35,435 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand 12 states. [2020-08-22 03:43:35,845 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:36,399 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:37,064 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:37,346 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:37,581 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:37,818 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:38,107 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:38,371 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:39,205 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:39,880 INFO L93 Difference]: Finished difference Result 727 states and 931 transitions. [2020-08-22 03:43:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 03:43:39,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 03:43:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:39,894 INFO L225 Difference]: With dead ends: 727 [2020-08-22 03:43:39,894 INFO L226 Difference]: Without dead ends: 492 [2020-08-22 03:43:39,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-22 03:43:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-22 03:43:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 411. [2020-08-22 03:43:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-08-22 03:43:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 492 transitions. [2020-08-22 03:43:39,989 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 492 transitions. Word has length 128 [2020-08-22 03:43:39,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:39,990 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 492 transitions. [2020-08-22 03:43:39,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 492 transitions. [2020-08-22 03:43:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 03:43:39,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:39,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:39,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:43:39,993 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2141115904, now seen corresponding path program 2 times [2020-08-22 03:43:39,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:39,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647786658] [2020-08-22 03:43:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:43:40,058 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:43:40,058 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:43:40,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:43:40,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:43:40 BoogieIcfgContainer [2020-08-22 03:43:40,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:43:40,096 INFO L168 Benchmark]: Toolchain (without parser) took 32129.03 ms. Allocated memory was 146.3 MB in the beginning and 628.6 MB in the end (delta: 482.3 MB). Free memory was 101.4 MB in the beginning and 412.1 MB in the end (delta: -310.8 MB). Peak memory consumption was 171.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:40,097 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:43:40,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.86 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.1 MB in the beginning and 170.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:40,098 INFO L168 Benchmark]: Boogie Preprocessor took 127.17 ms. Allocated memory is still 202.4 MB. Free memory was 170.1 MB in the beginning and 165.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:40,099 INFO L168 Benchmark]: RCFGBuilder took 1148.35 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.8 MB in the beginning and 196.6 MB in the end (delta: -30.9 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:40,100 INFO L168 Benchmark]: TraceAbstraction took 30208.12 ms. Allocated memory was 235.9 MB in the beginning and 628.6 MB in the end (delta: 392.7 MB). Free memory was 196.6 MB in the beginning and 412.1 MB in the end (delta: -215.5 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:40,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.86 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.1 MB in the beginning and 170.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.17 ms. Allocated memory is still 202.4 MB. Free memory was 170.1 MB in the beginning and 165.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1148.35 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.8 MB in the beginning and 196.6 MB in the end (delta: -30.9 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30208.12 ms. Allocated memory was 235.9 MB in the beginning and 628.6 MB in the end (delta: 392.7 MB). Free memory was 196.6 MB in the beginning and 412.1 MB in the end (delta: -215.5 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) [L606] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L606] RET waterRise() [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L809] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L809] RET, EXPR isHighWaterSensorDry() [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L722] int tmp ; [L726] CALL, EXPR isMethaneAlarm() [L747] int retValue_acc ; [L751] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L751] RET, EXPR isMethaneLevelCritical() [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); [L726] RET, EXPR isMethaneAlarm() [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L732] CALL activatePump__wrappee__highWaterSensor() [L716] pumpRunning = 1 [L732] RET activatePump__wrappee__highWaterSensor() [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L153] CALL, EXPR isPumpRunning() [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); [L153] RET, EXPR isPumpRunning() [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) [L157] CALL __automaton_fail() [L211] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 1922 SDslu, 1097 SDs, 0 SdLazy, 5421 SolverSat, 1223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 350 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 772 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 204026 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/52 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...