/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_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:33:55,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:33:55,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:33:55,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:33:55,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:33:55,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:33:55,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:33:55,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:33:55,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:33:55,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:33:55,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:33:55,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:33:55,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:33:55,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:33:55,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:33:55,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:33:55,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:33:55,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:33:55,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:33:55,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:33:55,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:33:55,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:33:55,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:33:55,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:33:55,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:33:55,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:33:55,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:33:55,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:33:55,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:33:55,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:33:55,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:33:55,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:33:55,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:33:55,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:33:55,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:33:55,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:33:55,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:33:55,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:33:55,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:33:55,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:33:55,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:33:55,644 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 15:33:55,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:33:55,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:33:55,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:33:55,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:33:55,682 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:33:55,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:33:55,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:33:55,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:33:55,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:33:55,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:33:55,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:33:55,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:33:55,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:33:55,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:33:55,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:33:55,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:33:55,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:33:55,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:33:55,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:33:55,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:33:55,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:33:55,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:33:55,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:33:55,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:33:55,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:33:55,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:33:55,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:33:55,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:33:55,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:33:55,687 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 15:33:55,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:33:56,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:33:56,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:33:56,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:33:56,017 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:33:56,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-21 15:33:56,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/012f62efd/7e1daafd7ad04d3bbafdeac31ad2a72d/FLAG838baab55 [2020-08-21 15:33:56,571 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:33:56,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-21 15:33:56,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/012f62efd/7e1daafd7ad04d3bbafdeac31ad2a72d/FLAG838baab55 [2020-08-21 15:33:56,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/012f62efd/7e1daafd7ad04d3bbafdeac31ad2a72d [2020-08-21 15:33:56,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:33:56,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:33:56,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:33:56,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:33:56,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:33:56,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:56" (1/1) ... [2020-08-21 15:33:56,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19faf05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:56, skipping insertion in model container [2020-08-21 15:33:56,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:56" (1/1) ... [2020-08-21 15:33:56,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:33:56,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:33:57,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:33:57,378 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:33:57,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:33:57,505 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:33:57,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57 WrapperNode [2020-08-21 15:33:57,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:33:57,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:33:57,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:33:57,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:33:57,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (1/1) ... [2020-08-21 15:33:57,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:33:57,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:33:57,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:33:57,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:33:57,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (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 15:33:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:33:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:33:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:33:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:33:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:33:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:33:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:33:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:33:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:33:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:33:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:33:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:33:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:33:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:33:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:33:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:33:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:33:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:33:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:33:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 15:33:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:33:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:33:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:33:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:33:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:33:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:33:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:33:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:33:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:33:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:33:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:33:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:33:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:33:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:33:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:33:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:33:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:33:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:33:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 15:33:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:33:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:33:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:33:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:33:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:33:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:33:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:33:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:33:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:33:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:33:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:33:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:33:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:33:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:33:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:33:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:33:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:33:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:33:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 15:33:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:33:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 15:33:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:33:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:33:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:33:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:33:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:33:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:33:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:33:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:33:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:33:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:33:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:33:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:33:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:33:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:33:58,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:33:58,808 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:33:58,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:58 BoogieIcfgContainer [2020-08-21 15:33:58,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:33:58,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:33:58,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:33:58,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:33:58,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:33:56" (1/3) ... [2020-08-21 15:33:58,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a5ee43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:58, skipping insertion in model container [2020-08-21 15:33:58,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:57" (2/3) ... [2020-08-21 15:33:58,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a5ee43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:58, skipping insertion in model container [2020-08-21 15:33:58,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:58" (3/3) ... [2020-08-21 15:33:58,823 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-08-21 15:33:58,835 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:33:58,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:33:58,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:33:58,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:33:58,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:33:58,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:33:58,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:33:58,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:33:58,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:33:58,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:33:58,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:33:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 15:33:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:33:58,920 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:58,921 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 15:33:58,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:58,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:58,929 INFO L82 PathProgramCache]: Analyzing trace with hash -16432852, now seen corresponding path program 1 times [2020-08-21 15:33:58,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:58,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5088748] [2020-08-21 15:33:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,580 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:33:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:33:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:33:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:59,709 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 15:33:59,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5088748] [2020-08-21 15:33:59,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:59,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:33:59,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454411149] [2020-08-21 15:33:59,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:33:59,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:59,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:33:59,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:33:59,737 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 15:34:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:00,840 INFO L93 Difference]: Finished difference Result 290 states and 378 transitions. [2020-08-21 15:34:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:34:00,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 15:34:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:00,857 INFO L225 Difference]: With dead ends: 290 [2020-08-21 15:34:00,857 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 15:34:00,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:34:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 15:34:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-21 15:34:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 15:34:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-21 15:34:00,979 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-21 15:34:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:00,980 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-21 15:34:00,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:34:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-21 15:34:00,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 15:34:00,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:00,994 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] [2020-08-21 15:34:00,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:34:00,994 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:00,995 INFO L82 PathProgramCache]: Analyzing trace with hash -687450637, now seen corresponding path program 1 times [2020-08-21 15:34:00,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:00,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800630569] [2020-08-21 15:34:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,377 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:34:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:34:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:34:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:34:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:34:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:34:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:34:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:34:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:34:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:01,426 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 15:34:01,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800630569] [2020-08-21 15:34:01,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:34:01,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:34:01,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436182579] [2020-08-21 15:34:01,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:34:01,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:34:01,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:34:01,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:34:01,430 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 4 states. [2020-08-21 15:34:01,822 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:34:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:02,583 INFO L93 Difference]: Finished difference Result 210 states and 255 transitions. [2020-08-21 15:34:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:34:02,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 15:34:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:02,590 INFO L225 Difference]: With dead ends: 210 [2020-08-21 15:34:02,590 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 15:34:02,592 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 [2020-08-21 15:34:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 15:34:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-21 15:34:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 15:34:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-08-21 15:34:02,627 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 53 [2020-08-21 15:34:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:02,627 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-08-21 15:34:02,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:34:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-08-21 15:34:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 15:34:02,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:02,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:34:02,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:34:02,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash 585649573, now seen corresponding path program 1 times [2020-08-21 15:34:02,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:02,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338009883] [2020-08-21 15:34:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,003 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:34:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:34:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:34:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:34:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:34:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:34:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:34:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:34:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:34:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:03,099 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 15:34:03,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338009883] [2020-08-21 15:34:03,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:34:03,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:34:03,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665416222] [2020-08-21 15:34:03,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:34:03,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:34:03,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:34:03,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:34:03,107 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 8 states. [2020-08-21 15:34:03,506 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:34:03,821 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:34:04,122 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:34:04,357 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:34:05,121 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:34:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:06,744 INFO L93 Difference]: Finished difference Result 402 states and 494 transitions. [2020-08-21 15:34:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:34:06,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 15:34:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:06,750 INFO L225 Difference]: With dead ends: 402 [2020-08-21 15:34:06,750 INFO L226 Difference]: Without dead ends: 311 [2020-08-21 15:34:06,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:34:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-21 15:34:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 238. [2020-08-21 15:34:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 15:34:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2020-08-21 15:34:06,843 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 58 [2020-08-21 15:34:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:06,844 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2020-08-21 15:34:06,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:34:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2020-08-21 15:34:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 15:34:06,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:06,846 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] [2020-08-21 15:34:06,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:34:06,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:06,847 INFO L82 PathProgramCache]: Analyzing trace with hash -107584034, now seen corresponding path program 1 times [2020-08-21 15:34:06,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:06,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514439515] [2020-08-21 15:34:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,170 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:34:07,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:34:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:34:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:34:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:34:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:34:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:34:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:34:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 15:34:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 15:34:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:07,261 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 15:34:07,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514439515] [2020-08-21 15:34:07,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:34:07,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:34:07,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601149935] [2020-08-21 15:34:07,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:34:07,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:34:07,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:34:07,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:34:07,264 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand 8 states. [2020-08-21 15:34:07,704 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:34:08,958 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:34:09,301 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:34:09,579 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:34:09,834 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:34:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:10,532 INFO L93 Difference]: Finished difference Result 729 states and 953 transitions. [2020-08-21 15:34:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:34:10,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 15:34:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:10,541 INFO L225 Difference]: With dead ends: 729 [2020-08-21 15:34:10,541 INFO L226 Difference]: Without dead ends: 515 [2020-08-21 15:34:10,543 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 [2020-08-21 15:34:10,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-08-21 15:34:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 449. [2020-08-21 15:34:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-21 15:34:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 545 transitions. [2020-08-21 15:34:10,657 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 545 transitions. Word has length 63 [2020-08-21 15:34:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:10,657 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 545 transitions. [2020-08-21 15:34:10,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:34:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 545 transitions. [2020-08-21 15:34:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 15:34:10,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:10,660 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] [2020-08-21 15:34:10,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:34:10,661 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:10,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:10,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1291077628, now seen corresponding path program 1 times [2020-08-21 15:34:10,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:10,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386590521] [2020-08-21 15:34:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,911 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:34:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:34:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:34:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:34:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:34:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:34:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:34:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:34:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:34:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 15:34:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 15:34:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:10,990 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 15:34:10,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386590521] [2020-08-21 15:34:10,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:34:10,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:34:10,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860170688] [2020-08-21 15:34:10,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:34:10,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:34:10,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:34:10,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:34:10,993 INFO L87 Difference]: Start difference. First operand 449 states and 545 transitions. Second operand 6 states. [2020-08-21 15:34:11,296 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:34:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:12,879 INFO L93 Difference]: Finished difference Result 1117 states and 1430 transitions. [2020-08-21 15:34:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:34:12,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 15:34:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:12,887 INFO L225 Difference]: With dead ends: 1117 [2020-08-21 15:34:12,888 INFO L226 Difference]: Without dead ends: 692 [2020-08-21 15:34:12,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:34:12,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-08-21 15:34:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 639. [2020-08-21 15:34:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-21 15:34:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 776 transitions. [2020-08-21 15:34:13,004 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 776 transitions. Word has length 67 [2020-08-21 15:34:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:13,004 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 776 transitions. [2020-08-21 15:34:13,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:34:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 776 transitions. [2020-08-21 15:34:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 15:34:13,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:13,006 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] [2020-08-21 15:34:13,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:34:13,007 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:13,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1290048412, now seen corresponding path program 1 times [2020-08-21 15:34:13,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:13,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709607039] [2020-08-21 15:34:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:34:13,120 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:34:13,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:34:13,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:34:13,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:34:13 BoogieIcfgContainer [2020-08-21 15:34:13,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:34:13,158 INFO L168 Benchmark]: Toolchain (without parser) took 16266.13 ms. Allocated memory was 140.0 MB in the beginning and 508.6 MB in the end (delta: 368.6 MB). Free memory was 102.5 MB in the beginning and 465.6 MB in the end (delta: -363.1 MB). Peak memory consumption was 350.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:13,160 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-21 15:34:13,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.45 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 170.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:13,166 INFO L168 Benchmark]: Boogie Preprocessor took 88.93 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 166.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:13,167 INFO L168 Benchmark]: RCFGBuilder took 1217.81 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.2 MB in the beginning and 194.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:13,167 INFO L168 Benchmark]: TraceAbstraction took 14340.22 ms. Allocated memory was 236.5 MB in the beginning and 508.6 MB in the end (delta: 272.1 MB). Free memory was 194.9 MB in the beginning and 465.6 MB in the end (delta: -270.7 MB). Peak memory consumption was 346.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:13,180 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.45 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 170.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.93 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 166.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1217.81 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.2 MB in the beginning and 194.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14340.22 ms. Allocated memory was 236.5 MB in the beginning and 508.6 MB in the end (delta: 272.1 MB). Free memory was 194.9 MB in the beginning and 465.6 MB in the end (delta: -270.7 MB). Peak memory consumption was 346.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L675] int waterLevel = 1; [L676] int methaneLevelCritical = 0; [L769] int cleanupTimeShifts = 4; [L845] int retValue_acc ; [L846] int tmp ; [L850] FCALL select_helpers() [L851] FCALL select_features() [L852] CALL, EXPR valid_product() [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); [L852] RET, EXPR valid_product() [L852] tmp = valid_product() [L854] COND TRUE \read(tmp) [L856] FCALL setup() [L857] CALL runTest() [L836] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L693] COND TRUE waterLevel < 2 [L694] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L655] CALL stopSystem() [L582] COND FALSE !(\read(pumpRunning)) [L589] systemActive = 0 [L655] RET stopSystem() [L662] CALL timeShift() [L434] COND FALSE !(\read(pumpRunning)) [L441] COND FALSE !(\read(systemActive)) [L449] CALL __utac_acc__Specification3_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L906] int tmp___1 ; [L910] CALL, EXPR isMethaneLevelCritical() [L714] int retValue_acc ; [L717] retValue_acc = methaneLevelCritical [L718] return (retValue_acc); [L910] RET, EXPR isMethaneLevelCritical() [L910] tmp = isMethaneLevelCritical() [L912] COND FALSE !(\read(tmp)) [L916] CALL, EXPR getWaterLevel() [L746] int retValue_acc ; [L749] retValue_acc = waterLevel [L750] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp___0 = getWaterLevel() [L918] COND TRUE tmp___0 == 2 [L920] CALL, EXPR isPumpRunning() [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___1 = isPumpRunning() [L922] COND FALSE !(\read(tmp___1)) [L926] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 575 SDtfs, 948 SDslu, 418 SDs, 0 SdLazy, 2127 SolverSat, 620 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 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...