/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:56:34,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:56:34,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:56:34,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:56:34,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:56:34,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:56:34,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:56:34,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:56:34,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:56:34,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:56:34,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:56:34,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:56:34,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:56:34,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:56:34,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:56:34,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:56:34,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:56:34,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:56:34,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:56:34,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:56:34,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:56:34,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:56:34,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:56:34,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:56:34,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:56:34,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:56:34,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:56:34,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:56:34,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:56:34,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:56:34,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:56:34,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:56:34,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:56:34,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:56:34,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:56:34,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:56:34,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:56:34,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:56:34,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:56:34,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:56:34,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:56:34,635 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 20:56:34,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:56:34,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:56:34,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:56:34,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:56:34,668 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:56:34,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:56:34,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:56:34,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:56:34,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:56:34,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:56:34,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:56:34,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:56:34,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:56:34,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:56:34,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:56:34,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:56:34,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:56:34,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:56:34,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:56:34,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:56:34,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:56:34,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:56:34,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:56:34,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:56:34,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:56:34,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:56:34,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:56:34,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:56:34,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:56:34,673 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:56:34,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:56:35,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:56:35,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:56:35,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:56:35,030 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:56:35,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-08-18 20:56:35,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/014245392/1d200a05a761441ab233d21f8a6576f9/FLAG7fe5fc1a0 [2020-08-18 20:56:35,639 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:56:35,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-08-18 20:56:35,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/014245392/1d200a05a761441ab233d21f8a6576f9/FLAG7fe5fc1a0 [2020-08-18 20:56:35,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/014245392/1d200a05a761441ab233d21f8a6576f9 [2020-08-18 20:56:35,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:56:35,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:56:35,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:56:35,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:56:35,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:56:35,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:56:35" (1/1) ... [2020-08-18 20:56:35,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aea0440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:35, skipping insertion in model container [2020-08-18 20:56:35,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:56:35" (1/1) ... [2020-08-18 20:56:35,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:56:36,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:56:36,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:56:36,497 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:56:36,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:56:36,640 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:56:36,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36 WrapperNode [2020-08-18 20:56:36,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:56:36,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:56:36,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:56:36,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:56:36,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (1/1) ... [2020-08-18 20:56:36,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:56:36,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:56:36,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:56:36,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:56:36,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (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 20:56:36,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:56:36,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:56:36,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:56:36,849 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:56:36,849 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:56:36,849 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:56:36,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:56:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:56:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:56:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:56:36,851 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:56:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:56:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:56:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:56:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:56:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:56:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:56:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:56:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:56:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:56:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:56:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:56:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:56:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:56:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 20:56:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:56:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 20:56:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:56:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:56:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:56:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:56:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:56:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:56:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:56:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:56:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:56:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:56:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:56:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:56:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:56:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:56:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:56:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:56:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:56:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:56:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:56:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:56:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:56:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:56:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:56:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:56:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:56:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:56:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:56:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:56:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:56:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:56:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:56:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:56:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:56:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:56:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:56:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:56:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:56:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:56:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:56:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:56:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:56:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:56:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:56:37,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:56:37,915 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:56:37,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:37 BoogieIcfgContainer [2020-08-18 20:56:37,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:56:37,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:56:37,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:56:37,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:56:37,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:56:35" (1/3) ... [2020-08-18 20:56:37,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e9f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:37, skipping insertion in model container [2020-08-18 20:56:37,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:36" (2/3) ... [2020-08-18 20:56:37,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e9f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:37, skipping insertion in model container [2020-08-18 20:56:37,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:37" (3/3) ... [2020-08-18 20:56:37,930 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2020-08-18 20:56:37,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:56:37,950 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:56:37,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:56:37,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:56:37,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:56:37,991 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:56:37,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:56:37,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:56:37,992 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:56:37,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:56:37,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:56:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-18 20:56:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:56:38,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:38,029 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 20:56:38,029 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash -48518306, now seen corresponding path program 1 times [2020-08-18 20:56:38,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:38,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922750843] [2020-08-18 20:56:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,759 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:38,892 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 20:56:38,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922750843] [2020-08-18 20:56:38,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:38,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:56:38,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617997773] [2020-08-18 20:56:38,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:56:38,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:56:38,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:56:38,926 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-18 20:56:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:40,111 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-08-18 20:56:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:56:40,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:56:40,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:40,130 INFO L225 Difference]: With dead ends: 300 [2020-08-18 20:56:40,130 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 20:56:40,136 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 20:56:40,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 20:56:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-08-18 20:56:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 20:56:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-08-18 20:56:40,234 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-08-18 20:56:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:40,235 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-08-18 20:56:40,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:56:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-08-18 20:56:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:56:40,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:40,239 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 20:56:40,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:56:40,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash 224052050, now seen corresponding path program 1 times [2020-08-18 20:56:40,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:40,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973872485] [2020-08-18 20:56:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,578 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:56:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:56:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:40,621 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 20:56:40,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973872485] [2020-08-18 20:56:40,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:40,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:56:40,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261830946] [2020-08-18 20:56:40,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:56:40,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:56:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:56:40,625 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-08-18 20:56:41,014 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:41,884 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-08-18 20:56:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:56:41,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:56:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:41,887 INFO L225 Difference]: With dead ends: 229 [2020-08-18 20:56:41,888 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 20:56:41,889 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 20:56:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 20:56:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-18 20:56:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 20:56:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-18 20:56:41,924 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-08-18 20:56:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:41,924 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-18 20:56:41,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:56:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-18 20:56:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:56:41,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:41,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:41,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:56:41,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:41,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1519728538, now seen corresponding path program 1 times [2020-08-18 20:56:41,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:41,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438217437] [2020-08-18 20:56:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,242 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:56:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:42,321 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 20:56:42,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438217437] [2020-08-18 20:56:42,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:42,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:42,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6105690] [2020-08-18 20:56:42,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:42,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:42,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:42,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:42,324 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2020-08-18 20:56:42,681 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:42,975 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:43,225 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:43,481 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:44,638 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-08-18 20:56:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:56:44,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:56:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:44,645 INFO L225 Difference]: With dead ends: 242 [2020-08-18 20:56:44,645 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 20:56:44,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:56:44,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 20:56:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-18 20:56:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 20:56:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-18 20:56:44,700 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-08-18 20:56:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:44,701 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-18 20:56:44,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-18 20:56:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 20:56:44,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:44,703 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] [2020-08-18 20:56:44,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:56:44,704 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash -531263457, now seen corresponding path program 1 times [2020-08-18 20:56:44,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:44,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478971402] [2020-08-18 20:56:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:44,998 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:56:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:56:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:56:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 20:56:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:45,117 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 20:56:45,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478971402] [2020-08-18 20:56:45,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:45,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748841956] [2020-08-18 20:56:45,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:45,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:45,121 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-08-18 20:56:45,450 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:47,039 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:47,334 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:47,577 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:47,930 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:48,328 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-08-18 20:56:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:56:48,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-08-18 20:56:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:48,333 INFO L225 Difference]: With dead ends: 363 [2020-08-18 20:56:48,333 INFO L226 Difference]: Without dead ends: 267 [2020-08-18 20:56:48,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:56:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-18 20:56:48,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-08-18 20:56:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-18 20:56:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-18 20:56:48,389 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-08-18 20:56:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:48,390 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-18 20:56:48,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-18 20:56:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 20:56:48,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:48,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:48,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:56:48,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1398757657, now seen corresponding path program 1 times [2020-08-18 20:56:48,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:48,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907289570] [2020-08-18 20:56:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,686 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:56:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:56:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 20:56:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 20:56:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:48,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907289570] [2020-08-18 20:56:48,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:48,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:56:48,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462119349] [2020-08-18 20:56:48,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:56:48,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:48,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:56:48,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:56:48,778 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 6 states. [2020-08-18 20:56:49,103 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:49,643 INFO L93 Difference]: Finished difference Result 348 states and 431 transitions. [2020-08-18 20:56:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:56:49,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-18 20:56:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:49,646 INFO L225 Difference]: With dead ends: 348 [2020-08-18 20:56:49,646 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 20:56:49,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:56:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 20:56:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-08-18 20:56:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 20:56:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2020-08-18 20:56:49,679 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 75 [2020-08-18 20:56:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:49,680 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2020-08-18 20:56:49,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:56:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2020-08-18 20:56:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 20:56:49,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:49,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:49,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:56:49,682 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1135016507, now seen corresponding path program 1 times [2020-08-18 20:56:49,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:49,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169535706] [2020-08-18 20:56:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:56:49,741 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:56:49,742 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:56:49,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:56:49,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:56:49 BoogieIcfgContainer [2020-08-18 20:56:49,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:56:49,771 INFO L168 Benchmark]: Toolchain (without parser) took 13792.88 ms. Allocated memory was 137.4 MB in the beginning and 460.3 MB in the end (delta: 323.0 MB). Free memory was 99.2 MB in the beginning and 217.7 MB in the end (delta: -118.5 MB). Peak memory consumption was 204.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:49,772 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:56:49,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.48 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.0 MB in the beginning and 167.9 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:49,774 INFO L168 Benchmark]: Boogie Preprocessor took 121.06 ms. Allocated memory is still 200.3 MB. Free memory was 167.2 MB in the beginning and 163.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:49,775 INFO L168 Benchmark]: RCFGBuilder took 1158.26 ms. Allocated memory was 200.3 MB in the beginning and 230.2 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 191.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:49,776 INFO L168 Benchmark]: TraceAbstraction took 11847.38 ms. Allocated memory was 230.2 MB in the beginning and 460.3 MB in the end (delta: 230.2 MB). Free memory was 191.9 MB in the beginning and 217.7 MB in the end (delta: -25.7 MB). Peak memory consumption was 204.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:49,780 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 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.48 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.0 MB in the beginning and 167.9 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.06 ms. Allocated memory is still 200.3 MB. Free memory was 167.2 MB in the beginning and 163.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1158.26 ms. Allocated memory was 200.3 MB in the beginning and 230.2 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 191.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11847.38 ms. Allocated memory was 230.2 MB in the beginning and 460.3 MB in the end (delta: 230.2 MB). Free memory was 191.9 MB in the beginning and 217.7 MB in the end (delta: -25.7 MB). Peak memory consumption was 204.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 883]: 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; [L136] int cleanupTimeShifts = 4; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L215] int retValue_acc ; [L216] int tmp ; [L220] FCALL select_helpers() [L221] FCALL select_features() [L222] CALL, EXPR valid_product() [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L222] RET, EXPR valid_product() [L222] tmp = valid_product() [L224] COND TRUE \read(tmp) [L226] FCALL setup() [L227] CALL runTest() [L206] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L660] CALL timeShift() [L683] COND FALSE !(\read(pumpRunning)) [L690] COND TRUE \read(systemActive) [L692] CALL processEnvironment() [L738] int tmp ; [L741] COND FALSE !(\read(pumpRunning)) [L756] CALL processEnvironment__wrappee__methaneQuery() [L712] int tmp ; [L715] COND FALSE !(\read(pumpRunning)) [L730] FCALL processEnvironment__wrappee__base() [L756] RET processEnvironment__wrappee__methaneQuery() [L692] RET processEnvironment() [L698] CALL __utac_acc__Specification3_spec__1() [L924] int tmp ; [L925] int tmp___0 ; [L926] int tmp___1 ; [L930] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L936] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L936] RET, EXPR getWaterLevel() [L936] tmp___0 = getWaterLevel() [L938] COND TRUE tmp___0 == 2 [L940] CALL, EXPR isPumpRunning() [L807] int retValue_acc ; [L810] retValue_acc = pumpRunning [L811] return (retValue_acc); [L940] RET, EXPR isPumpRunning() [L940] tmp___1 = isPumpRunning() [L942] COND FALSE !(\read(tmp___1)) [L946] CALL __automaton_fail() [L883] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 520 SDtfs, 796 SDslu, 267 SDs, 0 SdLazy, 1587 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 88076 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...