/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:29:30,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:29:30,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:29:30,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:29:30,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:29:30,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:29:30,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:29:30,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:29:30,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:29:30,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:29:30,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:29:30,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:29:30,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:29:30,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:29:30,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:29:30,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:29:30,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:29:30,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:29:30,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:29:30,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:29:30,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:29:30,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:29:30,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:29:30,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:29:30,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:29:30,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:29:30,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:29:30,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:29:30,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:29:30,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:29:30,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:29:30,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:29:30,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:29:30,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:29:30,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:29:30,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:29:30,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:29:30,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:29:30,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:29:30,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:29:30,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:29:30,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:29:30,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:29:30,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:29:30,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:29:30,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:29:30,616 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:29:30,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:29:30,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:29:30,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:29:30,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:29:30,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:29:30,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:29:30,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:29:30,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:29:30,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:29:30,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:29:30,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:29:30,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:29:30,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:29:30,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:29:30,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:29:30,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:29:30,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:29:30,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:29:30,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:29:30,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:29:30,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:29:30,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:29:30,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:29:30,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:29:30,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:29:30,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:29:30,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:29:30,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:29:30,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:29:30,957 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:29:30,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-21 15:29:31,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1a69c69e/955fd7eddf4140a49dc1fc538e50329f/FLAG2a782061a [2020-08-21 15:29:31,538 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:29:31,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-21 15:29:31,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1a69c69e/955fd7eddf4140a49dc1fc538e50329f/FLAG2a782061a [2020-08-21 15:29:31,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1a69c69e/955fd7eddf4140a49dc1fc538e50329f [2020-08-21 15:29:31,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:29:31,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:29:31,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:29:31,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:29:31,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:29:31,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:29:31" (1/1) ... [2020-08-21 15:29:31,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:31, skipping insertion in model container [2020-08-21 15:29:31,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:29:31" (1/1) ... [2020-08-21 15:29:31,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:29:31,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:29:32,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:29:32,341 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:29:32,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:29:32,458 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:29:32,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32 WrapperNode [2020-08-21 15:29:32,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:29:32,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:29:32,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:29:32,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:29:32,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... [2020-08-21 15:29:32,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:29:32,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:29:32,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:29:32,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:29:32,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:29:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:29:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:29:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:29:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:29:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:29:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:29:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:29:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:29:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:29:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:29:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:29:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:29:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:29:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:29:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:29:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:29:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:29:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:29:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:29:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:29:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:29:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:29:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:29:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:29:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:29:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:29:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:29:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:29:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:29:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:29:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:29:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:29:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:29:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:29:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:29:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:29:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:29:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:29:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:29:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:29:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:29:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:29:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:29:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:29:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:29:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:29:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:29:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:29:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:29:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:29:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:29:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:29:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:29:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:29:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:29:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:29:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:29:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:29:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:29:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:29:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:29:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:29:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:29:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:29:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:29:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:29:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:29:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:29:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:29:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:29:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:29:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:29:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:29:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:29:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:29:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 15:29:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:29:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:29:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:29:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:29:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:29:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:29:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:29:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:29:33,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:29:33,701 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:29:33,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:29:33 BoogieIcfgContainer [2020-08-21 15:29:33,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:29:33,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:29:33,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:29:33,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:29:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:29:31" (1/3) ... [2020-08-21 15:29:33,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d0ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:29:33, skipping insertion in model container [2020-08-21 15:29:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:29:32" (2/3) ... [2020-08-21 15:29:33,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d0ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:29:33, skipping insertion in model container [2020-08-21 15:29:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:29:33" (3/3) ... [2020-08-21 15:29:33,715 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-21 15:29:33,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:29:33,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:29:33,749 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:29:33,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:29:33,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:29:33,776 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:29:33,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:29:33,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:29:33,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:29:33,777 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:29:33,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:29:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-21 15:29:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:29:33,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:33,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:33,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-21 15:29:33,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:33,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465890992] [2020-08-21 15:29:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,485 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:29:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:29:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:34,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465890992] [2020-08-21 15:29:34,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:34,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:29:34,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564764138] [2020-08-21 15:29:34,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:29:34,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:34,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:29:34,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:29:34,635 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-21 15:29:35,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:35,718 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-21 15:29:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:29:35,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:29:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:35,736 INFO L225 Difference]: With dead ends: 258 [2020-08-21 15:29:35,736 INFO L226 Difference]: Without dead ends: 140 [2020-08-21 15:29:35,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:29:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-21 15:29:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-21 15:29:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 15:29:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-21 15:29:35,827 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-21 15:29:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:35,828 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-21 15:29:35,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:29:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-21 15:29:35,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:29:35,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:35,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:35,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:29:35,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:35,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-21 15:29:35,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:35,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614847537] [2020-08-21 15:29:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,282 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:29:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:29:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:36,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614847537] [2020-08-21 15:29:36,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:36,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:29:36,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956612026] [2020-08-21 15:29:36,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:29:36,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:29:36,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:29:36,343 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-21 15:29:36,760 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:37,419 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-21 15:29:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:29:37,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:29:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:37,423 INFO L225 Difference]: With dead ends: 187 [2020-08-21 15:29:37,423 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 15:29:37,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:29:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 15:29:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 15:29:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 15:29:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-21 15:29:37,459 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-21 15:29:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:37,459 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-21 15:29:37,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:29:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-21 15:29:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:29:37,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:37,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:37,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:29:37,462 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:37,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:37,462 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-21 15:29:37,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:37,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956219567] [2020-08-21 15:29:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,778 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:29:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:29:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:37,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956219567] [2020-08-21 15:29:37,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:37,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:29:37,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715916993] [2020-08-21 15:29:37,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:29:37,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:37,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:29:37,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:29:37,889 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-21 15:29:38,298 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:38,606 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:38,885 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:39,126 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:40,110 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-21 15:29:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:29:40,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 15:29:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:40,114 INFO L225 Difference]: With dead ends: 200 [2020-08-21 15:29:40,114 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 15:29:40,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:29:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 15:29:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 15:29:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 15:29:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-21 15:29:40,150 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-21 15:29:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:40,150 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-21 15:29:40,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:29:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-21 15:29:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:29:40,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:40,152 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] [2020-08-21 15:29:40,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:29:40,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-21 15:29:40,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:40,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712545490] [2020-08-21 15:29:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,483 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:29:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 15:29:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 15:29:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:40,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712545490] [2020-08-21 15:29:40,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:40,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:29:40,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455581081] [2020-08-21 15:29:40,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:29:40,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:40,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:29:40,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:29:40,563 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-21 15:29:40,881 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:41,991 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:42,455 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-21 15:29:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:29:42,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 15:29:42,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:42,460 INFO L225 Difference]: With dead ends: 288 [2020-08-21 15:29:42,460 INFO L226 Difference]: Without dead ends: 212 [2020-08-21 15:29:42,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:29:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-21 15:29:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-21 15:29:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-21 15:29:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-21 15:29:42,502 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-21 15:29:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:42,503 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-21 15:29:42,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:29:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-21 15:29:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 15:29:42,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:42,505 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] [2020-08-21 15:29:42,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:29:42,505 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-21 15:29:42,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:42,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089355218] [2020-08-21 15:29:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,788 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:29:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 15:29:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:29:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:42,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089355218] [2020-08-21 15:29:42,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:42,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:29:42,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632611374] [2020-08-21 15:29:42,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:29:42,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:42,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:29:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:29:42,909 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-21 15:29:43,247 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:44,318 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:44,590 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:44,837 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:45,060 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:45,324 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:45,955 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-21 15:29:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:29:45,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-21 15:29:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:45,962 INFO L225 Difference]: With dead ends: 505 [2020-08-21 15:29:45,962 INFO L226 Difference]: Without dead ends: 360 [2020-08-21 15:29:45,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:29:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-21 15:29:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-21 15:29:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-21 15:29:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-21 15:29:46,051 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-21 15:29:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:46,051 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-21 15:29:46,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:29:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-21 15:29:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 15:29:46,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:46,053 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, 1, 1, 1] [2020-08-21 15:29:46,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:29:46,054 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:46,054 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-21 15:29:46,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:46,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874416624] [2020-08-21 15:29:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,334 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 15:29:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 15:29:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:46,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874416624] [2020-08-21 15:29:46,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:46,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:29:46,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620505081] [2020-08-21 15:29:46,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:29:46,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:46,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:29:46,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:29:46,442 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-21 15:29:46,792 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:47,808 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,018 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:48,271 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,517 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:48,757 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:49,386 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-21 15:29:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:29:49,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 15:29:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:49,391 INFO L225 Difference]: With dead ends: 402 [2020-08-21 15:29:49,392 INFO L226 Difference]: Without dead ends: 399 [2020-08-21 15:29:49,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:29:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-21 15:29:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-21 15:29:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-21 15:29:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-21 15:29:49,462 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-21 15:29:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:49,462 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-21 15:29:49,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:29:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-21 15:29:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 15:29:49,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:49,465 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, 1, 1, 1, 1] [2020-08-21 15:29:49,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:29:49,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-21 15:29:49,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:49,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710476144] [2020-08-21 15:29:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,694 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 15:29:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:29:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:49,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710476144] [2020-08-21 15:29:49,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:49,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:29:49,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376306915] [2020-08-21 15:29:49,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:29:49,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:49,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:29:49,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:29:49,811 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-21 15:29:50,739 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:29:50,981 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:29:51,210 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:51,431 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:52,262 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-21 15:29:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:29:52,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 15:29:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:52,267 INFO L225 Difference]: With dead ends: 672 [2020-08-21 15:29:52,267 INFO L226 Difference]: Without dead ends: 403 [2020-08-21 15:29:52,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:29:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-21 15:29:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-21 15:29:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-21 15:29:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-21 15:29:52,324 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-21 15:29:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:52,325 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-21 15:29:52,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:29:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-21 15:29:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 15:29:52,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:52,327 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, 1, 1, 1, 1] [2020-08-21 15:29:52,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:29:52,327 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:52,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-21 15:29:52,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:52,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716479062] [2020-08-21 15:29:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,629 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 15:29:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:29:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:52,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716479062] [2020-08-21 15:29:52,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:52,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:29:52,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222033564] [2020-08-21 15:29:52,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:29:52,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:52,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:29:52,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:29:52,773 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-21 15:29:53,287 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:53,513 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:53,736 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:54,355 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:54,592 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:54,820 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:29:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:55,712 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-21 15:29:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:29:55,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-21 15:29:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:55,717 INFO L225 Difference]: With dead ends: 696 [2020-08-21 15:29:55,717 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 15:29:55,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:29:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 15:29:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-21 15:29:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-21 15:29:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-21 15:29:55,811 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-21 15:29:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:55,811 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-21 15:29:55,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:29:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-21 15:29:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 15:29:55,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:55,813 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, 1, 1, 1, 1] [2020-08-21 15:29:55,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:29:55,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:55,814 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-21 15:29:55,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:55,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737574391] [2020-08-21 15:29:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,069 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:29:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:29:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:29:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:29:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:29:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:29:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:29:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:29:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:29:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:29:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:29:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 15:29:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:29:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:29:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:29:56,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737574391] [2020-08-21 15:29:56,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:29:56,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:29:56,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006007706] [2020-08-21 15:29:56,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:29:56,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:29:56,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:29:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:29:56,192 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-21 15:29:56,546 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:57,048 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:29:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:29:58,869 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-21 15:29:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:29:58,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-21 15:29:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:29:58,877 INFO L225 Difference]: With dead ends: 1018 [2020-08-21 15:29:58,877 INFO L226 Difference]: Without dead ends: 731 [2020-08-21 15:29:58,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:29:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-21 15:29:59,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-21 15:29:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-21 15:29:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-21 15:29:59,028 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-21 15:29:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:29:59,030 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-21 15:29:59,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:29:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-21 15:29:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 15:29:59,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:29:59,035 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:29:59,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:29:59,035 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:29:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:29:59,035 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-21 15:29:59,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:29:59,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298861444] [2020-08-21 15:29:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:29:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:29:59,098 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:29:59,099 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:29:59,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:29:59,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:29:59 BoogieIcfgContainer [2020-08-21 15:29:59,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:29:59,144 INFO L168 Benchmark]: Toolchain (without parser) took 27278.31 ms. Allocated memory was 140.5 MB in the beginning and 596.1 MB in the end (delta: 455.6 MB). Free memory was 102.3 MB in the beginning and 204.4 MB in the end (delta: -102.1 MB). Peak memory consumption was 353.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:29:59,145 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:29:59,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.45 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:29:59,147 INFO L168 Benchmark]: Boogie Preprocessor took 96.48 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:29:59,148 INFO L168 Benchmark]: RCFGBuilder took 1149.54 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 192.6 MB in the end (delta: -26.8 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:29:59,148 INFO L168 Benchmark]: TraceAbstraction took 25435.05 ms. Allocated memory was 234.4 MB in the beginning and 596.1 MB in the end (delta: 361.8 MB). Free memory was 192.6 MB in the beginning and 204.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 349.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:29:59,152 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 589.45 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.9 MB in the beginning and 170.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.48 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1149.54 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 192.6 MB in the end (delta: -26.8 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25435.05 ms. Allocated memory was 234.4 MB in the beginning and 596.1 MB in the end (delta: 361.8 MB). Free memory was 192.6 MB in the beginning and 204.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 349.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 901 SDtfs, 1722 SDslu, 881 SDs, 0 SdLazy, 4211 SolverSat, 1158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...