/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:32:58,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:32:58,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:32:58,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:32:58,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:32:58,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:32:58,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:32:58,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:32:58,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:32:58,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:32:58,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:32:58,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:32:58,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:32:58,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:32:58,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:32:58,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:32:58,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:32:58,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:32:58,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:32:58,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:32:58,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:32:58,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:32:58,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:32:58,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:32:58,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:32:58,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:32:58,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:32:58,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:32:58,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:32:58,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:32:58,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:32:58,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:32:58,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:32:58,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:32:58,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:32:58,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:32:58,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:32:58,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:32:58,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:32:58,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:32:58,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:32:58,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:32:58,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:32:58,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:32:58,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:32:58,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:32:58,715 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:32:58,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:32:58,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:32:58,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:32:58,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:32:58,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:32:58,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:32:58,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:32:58,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:32:58,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:32:58,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:32:58,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:32:58,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:32:58,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:32:58,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:32:58,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:32:58,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:32:58,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:32:58,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:32:58,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:32:58,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:32:58,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:32:58,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:32:58,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:32:58,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:32:58,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:32:59,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:32:59,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:32:59,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:32:59,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:32:59,086 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:32:59,087 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product15.cil.c [2020-08-18 22:32:59,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/245ad6da2/bec18189e09949d9a526b524327ec4f6/FLAG4fd5350f4 [2020-08-18 22:32:59,682 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:32:59,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product15.cil.c [2020-08-18 22:32:59,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/245ad6da2/bec18189e09949d9a526b524327ec4f6/FLAG4fd5350f4 [2020-08-18 22:32:59,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/245ad6da2/bec18189e09949d9a526b524327ec4f6 [2020-08-18 22:33:00,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:33:00,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:33:00,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:00,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:33:00,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:33:00,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:32:59" (1/1) ... [2020-08-18 22:33:00,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2467ba93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00, skipping insertion in model container [2020-08-18 22:33:00,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:32:59" (1/1) ... [2020-08-18 22:33:00,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:33:00,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:33:00,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:00,456 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:33:00,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:00,719 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:33:00,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00 WrapperNode [2020-08-18 22:33:00,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:00,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:33:00,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:33:00,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:33:00,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... [2020-08-18 22:33:00,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:33:00,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:33:00,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:33:00,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:33:00,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:33:00,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:33:00,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:33:00,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:00,877 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:33:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:33:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:33:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-18 22:33:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:33:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:33:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:33:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:33:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:33:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:33:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:33:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:33:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:33:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:33:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:33:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:33:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:33:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:33:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:33:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:33:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:33:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:33:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:33:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:33:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:33:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:33:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:33:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:33:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:33:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:33:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:33:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:33:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:33:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:33:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:33:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:33:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:33:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:33:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:33:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:33:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:33:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:33:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:33:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-18 22:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:33:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:33:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:33:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:33:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:33:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:33:02,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:33:02,007 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:33:02,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:02 BoogieIcfgContainer [2020-08-18 22:33:02,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:33:02,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:33:02,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:33:02,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:33:02,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:32:59" (1/3) ... [2020-08-18 22:33:02,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57070dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:02, skipping insertion in model container [2020-08-18 22:33:02,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:00" (2/3) ... [2020-08-18 22:33:02,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57070dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:02, skipping insertion in model container [2020-08-18 22:33:02,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:02" (3/3) ... [2020-08-18 22:33:02,022 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product15.cil.c [2020-08-18 22:33:02,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:33:02,041 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:33:02,056 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:33:02,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:33:02,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:33:02,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:33:02,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:33:02,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:33:02,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:33:02,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:33:02,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:33:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-18 22:33:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:33:02,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:02,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:02,118 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:02,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:02,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1150223249, now seen corresponding path program 1 times [2020-08-18 22:33:02,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:02,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14384657] [2020-08-18 22:33:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,848 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:33:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:03,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14384657] [2020-08-18 22:33:03,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:03,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:33:03,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063510310] [2020-08-18 22:33:03,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:33:03,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:33:03,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:03,043 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 3 states. [2020-08-18 22:33:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:04,146 INFO L93 Difference]: Finished difference Result 263 states and 350 transitions. [2020-08-18 22:33:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:33:04,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 22:33:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:04,162 INFO L225 Difference]: With dead ends: 263 [2020-08-18 22:33:04,163 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 22:33:04,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 22:33:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-08-18 22:33:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 22:33:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-08-18 22:33:04,275 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 52 [2020-08-18 22:33:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:04,276 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-08-18 22:33:04,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:33:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-08-18 22:33:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 22:33:04,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:04,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:04,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:33:04,291 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:04,291 INFO L82 PathProgramCache]: Analyzing trace with hash 780273255, now seen corresponding path program 1 times [2020-08-18 22:33:04,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:04,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135676671] [2020-08-18 22:33:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,704 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:33:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:33:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:04,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135676671] [2020-08-18 22:33:04,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:04,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:33:04,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028600765] [2020-08-18 22:33:04,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:33:04,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:33:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:33:04,772 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 4 states. [2020-08-18 22:33:05,153 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:05,826 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2020-08-18 22:33:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:33:05,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 22:33:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:05,830 INFO L225 Difference]: With dead ends: 190 [2020-08-18 22:33:05,831 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 22:33:05,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:33:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 22:33:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-08-18 22:33:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-18 22:33:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-08-18 22:33:05,866 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 53 [2020-08-18 22:33:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:05,867 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-08-18 22:33:05,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:33:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-08-18 22:33:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 22:33:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:05,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:05,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:33:05,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1294233432, now seen corresponding path program 1 times [2020-08-18 22:33:05,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:05,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445127174] [2020-08-18 22:33:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,207 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:06,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:33:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:33:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:33:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:06,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445127174] [2020-08-18 22:33:06,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:06,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:06,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347840753] [2020-08-18 22:33:06,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:06,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:06,353 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 8 states. [2020-08-18 22:33:06,759 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:07,086 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:07,316 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:07,531 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:08,249 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:09,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:09,637 INFO L93 Difference]: Finished difference Result 360 states and 450 transitions. [2020-08-18 22:33:09,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:33:09,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 22:33:09,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:09,647 INFO L225 Difference]: With dead ends: 360 [2020-08-18 22:33:09,648 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 22:33:09,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:33:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 22:33:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 228. [2020-08-18 22:33:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 22:33:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2020-08-18 22:33:09,723 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 57 [2020-08-18 22:33:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:09,723 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 277 transitions. [2020-08-18 22:33:09,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 277 transitions. [2020-08-18 22:33:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 22:33:09,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:09,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:09,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:33:09,726 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:09,726 INFO L82 PathProgramCache]: Analyzing trace with hash -914462432, now seen corresponding path program 1 times [2020-08-18 22:33:09,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:09,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599853997] [2020-08-18 22:33:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,038 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:33:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:33:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:33:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:10,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599853997] [2020-08-18 22:33:10,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:10,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:10,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898438264] [2020-08-18 22:33:10,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:10,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:10,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:10,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:10,134 INFO L87 Difference]: Start difference. First operand 228 states and 277 transitions. Second operand 8 states. [2020-08-18 22:33:10,462 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:11,762 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:12,074 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:12,348 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:12,609 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:13,178 INFO L93 Difference]: Finished difference Result 696 states and 923 transitions. [2020-08-18 22:33:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:33:13,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 22:33:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:13,184 INFO L225 Difference]: With dead ends: 696 [2020-08-18 22:33:13,184 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 22:33:13,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:33:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 22:33:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 429. [2020-08-18 22:33:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-18 22:33:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 535 transitions. [2020-08-18 22:33:13,302 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 535 transitions. Word has length 63 [2020-08-18 22:33:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:13,302 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 535 transitions. [2020-08-18 22:33:13,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 535 transitions. [2020-08-18 22:33:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 22:33:13,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:13,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:13,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:33:13,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1620725222, now seen corresponding path program 1 times [2020-08-18 22:33:13,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:13,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973971232] [2020-08-18 22:33:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,623 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:33:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:33:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 22:33:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 22:33:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:13,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973971232] [2020-08-18 22:33:13,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:13,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:33:13,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478828892] [2020-08-18 22:33:13,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:33:13,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:13,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:33:13,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:33:13,703 INFO L87 Difference]: Start difference. First operand 429 states and 535 transitions. Second operand 6 states. [2020-08-18 22:33:14,036 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:14,816 INFO L93 Difference]: Finished difference Result 741 states and 956 transitions. [2020-08-18 22:33:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:33:14,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 22:33:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:14,820 INFO L225 Difference]: With dead ends: 741 [2020-08-18 22:33:14,820 INFO L226 Difference]: Without dead ends: 336 [2020-08-18 22:33:14,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:33:14,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-18 22:33:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315. [2020-08-18 22:33:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-18 22:33:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 366 transitions. [2020-08-18 22:33:14,887 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 366 transitions. Word has length 67 [2020-08-18 22:33:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:14,888 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 366 transitions. [2020-08-18 22:33:14,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:33:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 366 transitions. [2020-08-18 22:33:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 22:33:14,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:14,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:14,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:33:14,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:14,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:14,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1013606138, now seen corresponding path program 1 times [2020-08-18 22:33:14,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:14,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803531113] [2020-08-18 22:33:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:33:14,946 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:33:14,946 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:33:14,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:33:14,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:33:14 BoogieIcfgContainer [2020-08-18 22:33:14,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:33:14,978 INFO L168 Benchmark]: Toolchain (without parser) took 14972.20 ms. Allocated memory was 143.1 MB in the beginning and 455.6 MB in the end (delta: 312.5 MB). Free memory was 103.6 MB in the beginning and 345.9 MB in the end (delta: -242.3 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:14,979 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:33:14,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.59 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 103.4 MB in the beginning and 175.1 MB in the end (delta: -71.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:14,981 INFO L168 Benchmark]: Boogie Preprocessor took 93.97 ms. Allocated memory is still 205.0 MB. Free memory was 175.1 MB in the beginning and 171.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:14,982 INFO L168 Benchmark]: RCFGBuilder took 1198.23 ms. Allocated memory was 205.0 MB in the beginning and 231.7 MB in the end (delta: 26.7 MB). Free memory was 170.7 MB in the beginning and 191.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:14,983 INFO L168 Benchmark]: TraceAbstraction took 12961.64 ms. Allocated memory was 231.7 MB in the beginning and 455.6 MB in the end (delta: 223.9 MB). Free memory was 190.0 MB in the beginning and 345.9 MB in the end (delta: -155.9 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:14,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.59 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 103.4 MB in the beginning and 175.1 MB in the end (delta: -71.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.97 ms. Allocated memory is still 205.0 MB. Free memory was 175.1 MB in the beginning and 171.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1198.23 ms. Allocated memory was 205.0 MB in the beginning and 231.7 MB in the end (delta: 26.7 MB). Free memory was 170.7 MB in the beginning and 191.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12961.64 ms. Allocated memory was 231.7 MB in the beginning and 455.6 MB in the end (delta: 223.9 MB). Free memory was 190.0 MB in the beginning and 345.9 MB in the end (delta: -155.9 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 870]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int pumpRunning = 0; [L50] int systemActive = 1; [L454] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int waterLevel = 1; [L653] int methaneLevelCritical = 0; [L732] int cleanupTimeShifts = 4; [L808] int retValue_acc ; [L809] int tmp ; [L813] FCALL select_helpers() [L814] FCALL select_features() [L815] CALL, EXPR valid_product() [L901] int retValue_acc ; [L904] retValue_acc = 1 [L905] return (retValue_acc); [L815] RET, EXPR valid_product() [L815] tmp = valid_product() [L817] COND TRUE \read(tmp) [L819] FCALL setup() [L820] CALL runTest() [L799] CALL test() [L219] int splverifierCounter ; [L220] int tmp ; [L221] int tmp___0 ; [L222] int tmp___1 ; [L223] int tmp___2 ; [L226] splverifierCounter = 0 [L228] COND TRUE 1 [L230] COND TRUE splverifierCounter < 4 [L236] tmp = __VERIFIER_nondet_int() [L238] COND TRUE \read(tmp) [L240] CALL waterRise() [L670] COND TRUE waterLevel < 2 [L671] waterLevel = waterLevel + 1 [L240] RET waterRise() [L246] tmp___0 = __VERIFIER_nondet_int() [L248] COND FALSE !(\read(tmp___0)) [L256] tmp___2 = __VERIFIER_nondet_int() [L258] COND FALSE !(\read(tmp___2)) [L262] tmp___1 = __VERIFIER_nondet_int() [L264] COND TRUE \read(tmp___1) [L266] CALL stopSystem() [L203] COND FALSE !(\read(pumpRunning)) [L210] systemActive = 0 [L266] RET stopSystem() [L273] CALL timeShift() [L57] COND FALSE !(\read(pumpRunning)) [L64] COND FALSE !(\read(systemActive)) [L72] CALL __utac_acc__Specification3_spec__1() [L833] int tmp ; [L834] int tmp___0 ; [L835] int tmp___1 ; [L839] CALL, EXPR isMethaneLevelCritical() [L691] int retValue_acc ; [L694] retValue_acc = methaneLevelCritical [L695] return (retValue_acc); [L839] RET, EXPR isMethaneLevelCritical() [L839] tmp = isMethaneLevelCritical() [L841] COND FALSE !(\read(tmp)) [L845] CALL, EXPR getWaterLevel() [L723] int retValue_acc ; [L726] retValue_acc = waterLevel [L727] return (retValue_acc); [L845] RET, EXPR getWaterLevel() [L845] tmp___0 = getWaterLevel() [L847] COND TRUE tmp___0 == 2 [L849] CALL, EXPR isPumpRunning() [L155] int retValue_acc ; [L158] retValue_acc = pumpRunning [L159] return (retValue_acc); [L849] RET, EXPR isPumpRunning() [L849] tmp___1 = isPumpRunning() [L851] COND FALSE !(\read(tmp___1)) [L855] CALL __automaton_fail() [L870] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 482 SDtfs, 717 SDslu, 367 SDs, 0 SdLazy, 1794 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 195 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...