/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:35:48,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:35:48,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:35:48,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:35:48,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:35:48,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:35:48,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:35:48,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:35:48,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:35:48,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:35:48,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:35:48,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:35:48,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:35:48,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:35:48,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:35:48,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:35:48,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:35:48,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:35:48,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:35:48,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:35:48,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:35:48,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:35:48,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:35:48,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:35:48,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:35:48,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:35:48,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:35:48,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:35:48,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:35:48,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:35:48,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:35:48,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:35:48,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:35:48,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:35:48,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:35:48,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:35:48,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:35:48,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:35:48,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:35:48,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:35:48,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:35:48,556 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 [2020-08-19 02:35:48,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:35:48,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:35:48,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:35:48,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:35:48,593 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:35:48,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:35:48,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:35:48,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:35:48,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:35:48,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:35:48,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:35:48,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:35:48,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:35:48,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:35:48,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:35:48,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:35:48,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:35:48,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:35:48,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:35:48,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:35:48,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:35:48,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:35:48,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:35:48,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:35:48,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:35:48,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:35:48,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:35:48,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:35:48,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:35:48,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:35:48,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:35:48,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:35:48,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:35:48,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:35:48,909 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:35:48,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product15.cil.c [2020-08-19 02:35:48,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0221de0db/1faf856deb9943f0bef446e0fc7aa2cf/FLAGc4188e721 [2020-08-19 02:35:49,419 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:35:49,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product15.cil.c [2020-08-19 02:35:49,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0221de0db/1faf856deb9943f0bef446e0fc7aa2cf/FLAGc4188e721 [2020-08-19 02:35:49,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0221de0db/1faf856deb9943f0bef446e0fc7aa2cf [2020-08-19 02:35:49,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:35:49,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:35:49,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:49,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:35:49,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:35:49,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:49" (1/1) ... [2020-08-19 02:35:49,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68afa8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:49, skipping insertion in model container [2020-08-19 02:35:49,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:49" (1/1) ... [2020-08-19 02:35:49,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:35:49,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:35:50,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:50,151 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:35:50,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:50,425 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:35:50,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50 WrapperNode [2020-08-19 02:35:50,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:50,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:35:50,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:35:50,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:35:50,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (1/1) ... [2020-08-19 02:35:50,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:35:50,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:35:50,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:35:50,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:35:50,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (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 [2020-08-19 02:35:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:35:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:35:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:35:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 02:35:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:35:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-19 02:35:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:35:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:35:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:35:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:35:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:35:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:35:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:35:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:35:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:35:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:35:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:35:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:35:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:35:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:35:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:35:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:35:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:35:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:35:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:35:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:35:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:35:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:35:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:35:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:35:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:35:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:35:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:35:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:35:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:35:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:35:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:35:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-19 02:35:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:35:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:35:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:35:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:35:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:35:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:35:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:35:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:35:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:35:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:35:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:35:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:35:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:35:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:35:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:35:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:35:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:35:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:35:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:35:51,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:35:51,583 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:35:51,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:51 BoogieIcfgContainer [2020-08-19 02:35:51,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:35:51,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:35:51,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:35:51,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:35:51,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:35:49" (1/3) ... [2020-08-19 02:35:51,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9bf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:51, skipping insertion in model container [2020-08-19 02:35:51,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:50" (2/3) ... [2020-08-19 02:35:51,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9bf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:51, skipping insertion in model container [2020-08-19 02:35:51,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:51" (3/3) ... [2020-08-19 02:35:51,597 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product15.cil.c [2020-08-19 02:35:51,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:35:51,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:35:51,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:35:51,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:35:51,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:35:51,654 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:35:51,655 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:35:51,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:35:51,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:35:51,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:35:51,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:35:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-19 02:35:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:35:51,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:51,689 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] [2020-08-19 02:35:51,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1150223249, now seen corresponding path program 1 times [2020-08-19 02:35:51,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:51,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500801768] [2020-08-19 02:35:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,358 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:52,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500801768] [2020-08-19 02:35:52,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:52,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:35:52,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023096279] [2020-08-19 02:35:52,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:35:52,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:52,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:35:52,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:35:52,502 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 3 states. [2020-08-19 02:35:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:53,539 INFO L93 Difference]: Finished difference Result 263 states and 350 transitions. [2020-08-19 02:35:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:35:53,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 02:35:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:53,556 INFO L225 Difference]: With dead ends: 263 [2020-08-19 02:35:53,556 INFO L226 Difference]: Without dead ends: 143 [2020-08-19 02:35:53,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:35:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-19 02:35:53,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-08-19 02:35:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 02:35:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-08-19 02:35:53,710 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 52 [2020-08-19 02:35:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:53,711 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-08-19 02:35:53,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:35:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-08-19 02:35:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 02:35:53,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:53,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:53,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:35:53,728 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash 780273255, now seen corresponding path program 1 times [2020-08-19 02:35:53,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:53,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934957213] [2020-08-19 02:35:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,108 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:35:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:35:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:35:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:54,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934957213] [2020-08-19 02:35:54,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:54,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:35:54,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743571904] [2020-08-19 02:35:54,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:35:54,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:54,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:35:54,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:35:54,161 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 4 states. [2020-08-19 02:35:54,553 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:55,271 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2020-08-19 02:35:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:35:55,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 02:35:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:55,274 INFO L225 Difference]: With dead ends: 190 [2020-08-19 02:35:55,275 INFO L226 Difference]: Without dead ends: 127 [2020-08-19 02:35:55,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:35:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-19 02:35:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-08-19 02:35:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-19 02:35:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-08-19 02:35:55,311 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 53 [2020-08-19 02:35:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:55,312 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-08-19 02:35:55,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:35:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-08-19 02:35:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:35:55,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:55,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:55,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:35:55,315 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:55,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1294233432, now seen corresponding path program 1 times [2020-08-19 02:35:55,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:55,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070876754] [2020-08-19 02:35:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,683 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:35:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:35:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:55,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070876754] [2020-08-19 02:35:55,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:55,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:55,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284834216] [2020-08-19 02:35:55,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:55,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:55,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:55,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:55,799 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 8 states. [2020-08-19 02:35:56,145 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:35:56,457 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:35:56,736 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:35:56,967 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:35:57,762 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:59,177 INFO L93 Difference]: Finished difference Result 360 states and 450 transitions. [2020-08-19 02:35:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:35:59,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 02:35:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:59,183 INFO L225 Difference]: With dead ends: 360 [2020-08-19 02:35:59,183 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 02:35:59,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:35:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 02:35:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 228. [2020-08-19 02:35:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-19 02:35:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2020-08-19 02:35:59,249 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 57 [2020-08-19 02:35:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:59,250 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 277 transitions. [2020-08-19 02:35:59,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:35:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 277 transitions. [2020-08-19 02:35:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 02:35:59,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:59,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:59,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:35:59,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -914462432, now seen corresponding path program 1 times [2020-08-19 02:35:59,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:59,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434772577] [2020-08-19 02:35:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,570 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:35:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:35:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:35:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:59,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434772577] [2020-08-19 02:35:59,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:59,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:59,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099194363] [2020-08-19 02:35:59,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:59,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:59,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:59,741 INFO L87 Difference]: Start difference. First operand 228 states and 277 transitions. Second operand 8 states. [2020-08-19 02:36:00,158 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:01,450 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:01,741 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:01,996 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:02,268 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:02,816 INFO L93 Difference]: Finished difference Result 696 states and 923 transitions. [2020-08-19 02:36:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:36:02,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 02:36:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:02,823 INFO L225 Difference]: With dead ends: 696 [2020-08-19 02:36:02,824 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 02:36:02,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:36:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 02:36:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 429. [2020-08-19 02:36:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-19 02:36:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 535 transitions. [2020-08-19 02:36:02,928 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 535 transitions. Word has length 63 [2020-08-19 02:36:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:02,928 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 535 transitions. [2020-08-19 02:36:02,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:36:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 535 transitions. [2020-08-19 02:36:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:36:02,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:02,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:36:02,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:36:02,932 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1620725222, now seen corresponding path program 1 times [2020-08-19 02:36:02,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:02,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940170991] [2020-08-19 02:36:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,177 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:36:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:36:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:36:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:36:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:36:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:03,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940170991] [2020-08-19 02:36:03,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:03,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:36:03,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430871681] [2020-08-19 02:36:03,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:36:03,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:36:03,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:36:03,257 INFO L87 Difference]: Start difference. First operand 429 states and 535 transitions. Second operand 6 states. [2020-08-19 02:36:03,566 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:04,309 INFO L93 Difference]: Finished difference Result 741 states and 956 transitions. [2020-08-19 02:36:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:36:04,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 02:36:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:04,313 INFO L225 Difference]: With dead ends: 741 [2020-08-19 02:36:04,313 INFO L226 Difference]: Without dead ends: 336 [2020-08-19 02:36:04,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:36:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-19 02:36:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315. [2020-08-19 02:36:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-19 02:36:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 366 transitions. [2020-08-19 02:36:04,378 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 366 transitions. Word has length 67 [2020-08-19 02:36:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:04,378 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 366 transitions. [2020-08-19 02:36:04,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:36:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 366 transitions. [2020-08-19 02:36:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:36:04,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:04,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:36:04,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:36:04,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1013606138, now seen corresponding path program 1 times [2020-08-19 02:36:04,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:04,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886386217] [2020-08-19 02:36:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:36:04,435 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:36:04,435 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:36:04,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:36:04,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:36:04 BoogieIcfgContainer [2020-08-19 02:36:04,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:36:04,463 INFO L168 Benchmark]: Toolchain (without parser) took 14707.21 ms. Allocated memory was 141.0 MB in the beginning and 447.2 MB in the end (delta: 306.2 MB). Free memory was 102.0 MB in the beginning and 242.9 MB in the end (delta: -140.9 MB). Peak memory consumption was 165.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:04,464 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-19 02:36:04,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.66 ms. Allocated memory was 141.0 MB in the beginning and 206.6 MB in the end (delta: 65.5 MB). Free memory was 102.0 MB in the beginning and 177.0 MB in the end (delta: -75.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:04,466 INFO L168 Benchmark]: Boogie Preprocessor took 81.31 ms. Allocated memory is still 206.6 MB. Free memory was 177.0 MB in the beginning and 173.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:04,466 INFO L168 Benchmark]: RCFGBuilder took 1080.46 ms. Allocated memory was 206.6 MB in the beginning and 236.5 MB in the end (delta: 29.9 MB). Free memory was 172.2 MB in the beginning and 200.4 MB in the end (delta: -28.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:04,467 INFO L168 Benchmark]: TraceAbstraction took 12871.41 ms. Allocated memory was 236.5 MB in the beginning and 447.2 MB in the end (delta: 210.8 MB). Free memory was 200.4 MB in the beginning and 242.9 MB in the end (delta: -42.5 MB). Peak memory consumption was 168.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:04,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.66 ms. Allocated memory was 141.0 MB in the beginning and 206.6 MB in the end (delta: 65.5 MB). Free memory was 102.0 MB in the beginning and 177.0 MB in the end (delta: -75.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.31 ms. Allocated memory is still 206.6 MB. Free memory was 177.0 MB in the beginning and 173.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1080.46 ms. Allocated memory was 206.6 MB in the beginning and 236.5 MB in the end (delta: 29.9 MB). Free memory was 172.2 MB in the beginning and 200.4 MB in the end (delta: -28.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12871.41 ms. Allocated memory was 236.5 MB in the beginning and 447.2 MB in the end (delta: 210.8 MB). Free memory was 200.4 MB in the beginning and 242.9 MB in the end (delta: -42.5 MB). Peak memory consumption was 168.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 870]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int pumpRunning = 0; [L50] int systemActive = 1; [L454] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int waterLevel = 1; [L653] int methaneLevelCritical = 0; [L732] int cleanupTimeShifts = 4; [L808] int retValue_acc ; [L809] int tmp ; [L813] FCALL select_helpers() [L814] FCALL select_features() [L815] CALL, EXPR valid_product() [L901] int retValue_acc ; [L904] retValue_acc = 1 [L905] return (retValue_acc); [L815] RET, EXPR valid_product() [L815] tmp = valid_product() [L817] COND TRUE \read(tmp) [L819] FCALL setup() [L820] CALL runTest() [L799] CALL test() [L219] int splverifierCounter ; [L220] int tmp ; [L221] int tmp___0 ; [L222] int tmp___1 ; [L223] int tmp___2 ; [L226] splverifierCounter = 0 [L228] COND TRUE 1 [L230] COND TRUE splverifierCounter < 4 [L236] tmp = __VERIFIER_nondet_int() [L238] COND TRUE \read(tmp) [L240] CALL waterRise() [L670] COND TRUE waterLevel < 2 [L671] waterLevel = waterLevel + 1 [L240] RET waterRise() [L246] tmp___0 = __VERIFIER_nondet_int() [L248] COND FALSE !(\read(tmp___0)) [L256] tmp___2 = __VERIFIER_nondet_int() [L258] COND FALSE !(\read(tmp___2)) [L262] tmp___1 = __VERIFIER_nondet_int() [L264] COND TRUE \read(tmp___1) [L266] CALL stopSystem() [L203] COND FALSE !(\read(pumpRunning)) [L210] systemActive = 0 [L266] RET stopSystem() [L273] CALL timeShift() [L57] COND FALSE !(\read(pumpRunning)) [L64] COND FALSE !(\read(systemActive)) [L72] CALL __utac_acc__Specification3_spec__1() [L833] int tmp ; [L834] int tmp___0 ; [L835] int tmp___1 ; [L839] CALL, EXPR isMethaneLevelCritical() [L691] int retValue_acc ; [L694] retValue_acc = methaneLevelCritical [L695] return (retValue_acc); [L839] RET, EXPR isMethaneLevelCritical() [L839] tmp = isMethaneLevelCritical() [L841] COND FALSE !(\read(tmp)) [L845] CALL, EXPR getWaterLevel() [L723] int retValue_acc ; [L726] retValue_acc = waterLevel [L727] return (retValue_acc); [L845] RET, EXPR getWaterLevel() [L845] tmp___0 = getWaterLevel() [L847] COND TRUE tmp___0 == 2 [L849] CALL, EXPR isPumpRunning() [L155] int retValue_acc ; [L158] retValue_acc = pumpRunning [L159] return (retValue_acc); [L849] RET, EXPR isPumpRunning() [L849] tmp___1 = isPumpRunning() [L851] COND FALSE !(\read(tmp___1)) [L855] CALL __automaton_fail() [L870] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 481 SDtfs, 717 SDslu, 366 SDs, 0 SdLazy, 1790 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 195 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...