/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:25:04,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:25:04,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:25:04,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:25:04,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:25:04,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:25:04,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:25:04,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:25:04,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:25:04,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:25:04,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:25:04,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:25:04,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:25:04,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:25:04,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:25:04,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:25:04,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:25:04,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:25:04,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:25:04,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:25:04,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:25:04,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:25:04,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:25:04,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:25:04,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:25:04,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:25:04,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:25:04,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:25:04,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:25:04,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:25:04,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:25:04,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:25:04,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:25:04,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:25:04,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:25:04,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:25:04,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:25:04,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:25:04,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:25:04,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:25:04,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:25:04,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 16:25:04,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:25:04,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:25:04,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:25:04,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:25:04,960 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:25:04,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:25:04,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:25:04,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:25:04,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:25:04,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:25:04,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:25:04,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:25:04,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:25:04,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:25:04,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:25:04,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:25:04,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:25:04,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:25:04,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:25:04,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:25:04,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:25:04,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:25:04,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:25:04,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:25:04,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:25:04,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:25:04,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:04,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:25:04,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:25:04,965 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:25:05,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:25:05,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:25:05,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:25:05,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:25:05,285 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:25:05,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-07-20 16:25:05,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d13aac1/278710f5b4cd4c7d9a28e94852298159/FLAGce55bfb65 [2020-07-20 16:25:06,007 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:25:06,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-07-20 16:25:06,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d13aac1/278710f5b4cd4c7d9a28e94852298159/FLAGce55bfb65 [2020-07-20 16:25:06,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d13aac1/278710f5b4cd4c7d9a28e94852298159 [2020-07-20 16:25:06,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:25:06,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:25:06,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:25:06,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:25:06,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:25:06,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ab025c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06, skipping insertion in model container [2020-07-20 16:25:06,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:25:06,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:25:06,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:25:06,772 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:25:06,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:25:06,887 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:25:06,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06 WrapperNode [2020-07-20 16:25:06,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:25:06,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:25:06,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:25:06,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:25:06,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:25:06,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:25:06,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:25:06,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:25:06,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 16:25:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:25:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:25:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:25:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:25:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-20 16:25:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:25:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:25:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:25:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:25:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:25:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:25:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:25:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:25:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:25:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:25:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:25:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:25:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:25:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:25:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:25:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:25:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:25:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:25:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:25:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:25:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:25:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:25:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:25:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:25:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:25:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:25:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:25:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:25:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:25:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:25:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:25:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:25:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:25:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-20 16:25:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:25:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:25:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:25:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:25:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:25:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:25:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:25:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:25:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:25:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:25:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:25:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:25:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:25:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:25:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:25:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:25:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:25:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:25:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:25:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:25:08,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:25:08,061 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:25:08,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:25:08 BoogieIcfgContainer [2020-07-20 16:25:08,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:25:08,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:25:08,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:25:08,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:25:08,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:25:06" (1/3) ... [2020-07-20 16:25:08,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7fc51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:25:08, skipping insertion in model container [2020-07-20 16:25:08,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06" (2/3) ... [2020-07-20 16:25:08,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7fc51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:25:08, skipping insertion in model container [2020-07-20 16:25:08,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:25:08" (3/3) ... [2020-07-20 16:25:08,074 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-07-20 16:25:08,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:25:08,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:25:08,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:25:08,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:25:08,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:25:08,134 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:25:08,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:25:08,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:25:08,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:25:08,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:25:08,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:25:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-07-20 16:25:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:25:08,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:08,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:08,170 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1148002369, now seen corresponding path program 1 times [2020-07-20 16:25:08,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:08,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569051481] [2020-07-20 16:25:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:08,673 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:08,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:08,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:25:08,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:08,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:08,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569051481] [2020-07-20 16:25:08,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:08,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:25:08,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943121984] [2020-07-20 16:25:08,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:25:08,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:08,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:25:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:25:08,746 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 2 states. [2020-07-20 16:25:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:08,787 INFO L93 Difference]: Finished difference Result 228 states and 283 transitions. [2020-07-20 16:25:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:25:08,788 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:25:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:08,802 INFO L225 Difference]: With dead ends: 228 [2020-07-20 16:25:08,802 INFO L226 Difference]: Without dead ends: 114 [2020-07-20 16:25:08,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:25:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-20 16:25:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-20 16:25:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-20 16:25:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-07-20 16:25:08,862 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-07-20 16:25:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:08,863 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-07-20 16:25:08,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:25:08,863 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-07-20 16:25:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:25:08,867 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:08,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:09,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:09,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1455677075, now seen corresponding path program 1 times [2020-07-20 16:25:09,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:09,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900996411] [2020-07-20 16:25:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:09,552 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:09,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:09,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:25:09,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:09,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:09,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900996411] [2020-07-20 16:25:09,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:09,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:25:09,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210726972] [2020-07-20 16:25:09,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:25:09,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:09,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:25:09,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:09,595 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 3 states. [2020-07-20 16:25:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:09,618 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2020-07-20 16:25:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:25:09,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:25:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:09,621 INFO L225 Difference]: With dead ends: 168 [2020-07-20 16:25:09,621 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 16:25:09,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 16:25:09,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-20 16:25:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-20 16:25:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-07-20 16:25:09,636 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-07-20 16:25:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:09,637 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-07-20 16:25:09,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:25:09,637 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-07-20 16:25:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 16:25:09,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:09,639 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] [2020-07-20 16:25:09,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:09,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:09,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1980509365, now seen corresponding path program 1 times [2020-07-20 16:25:09,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:09,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428954345] [2020-07-20 16:25:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:10,261 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:10,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 16:25:10,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:10,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:10,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428954345] [2020-07-20 16:25:10,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:10,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:10,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77396216] [2020-07-20 16:25:10,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:10,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:10,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:10,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:10,343 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 6 states. [2020-07-20 16:25:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:10,574 INFO L93 Difference]: Finished difference Result 256 states and 315 transitions. [2020-07-20 16:25:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:25:10,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-20 16:25:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:10,579 INFO L225 Difference]: With dead ends: 256 [2020-07-20 16:25:10,579 INFO L226 Difference]: Without dead ends: 175 [2020-07-20 16:25:10,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:25:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-20 16:25:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-07-20 16:25:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-20 16:25:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2020-07-20 16:25:10,603 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 51 [2020-07-20 16:25:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:10,604 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2020-07-20 16:25:10,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2020-07-20 16:25:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 16:25:10,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:10,607 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] [2020-07-20 16:25:10,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:10,821 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1697187877, now seen corresponding path program 1 times [2020-07-20 16:25:10,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:10,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780919215] [2020-07-20 16:25:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:11,240 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:11,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:11,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 16:25:11,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:11,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:11,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780919215] [2020-07-20 16:25:11,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:11,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:25:11,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725114225] [2020-07-20 16:25:11,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:25:11,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:11,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:25:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:11,284 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand 3 states. [2020-07-20 16:25:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:11,323 INFO L93 Difference]: Finished difference Result 410 states and 527 transitions. [2020-07-20 16:25:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:25:11,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-20 16:25:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:11,327 INFO L225 Difference]: With dead ends: 410 [2020-07-20 16:25:11,327 INFO L226 Difference]: Without dead ends: 259 [2020-07-20 16:25:11,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-20 16:25:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2020-07-20 16:25:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 16:25:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 321 transitions. [2020-07-20 16:25:11,360 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 321 transitions. Word has length 55 [2020-07-20 16:25:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:11,360 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 321 transitions. [2020-07-20 16:25:11,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:25:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 321 transitions. [2020-07-20 16:25:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-20 16:25:11,368 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:11,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:11,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:11,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2082168587, now seen corresponding path program 1 times [2020-07-20 16:25:11,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:11,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937991643] [2020-07-20 16:25:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:11,748 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:25:11,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:11,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:25:11,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 16:25:11,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:11,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937991643] [2020-07-20 16:25:11,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:11,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:25:11,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579652801] [2020-07-20 16:25:11,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:25:11,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:25:11,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:25:11,792 INFO L87 Difference]: Start difference. First operand 256 states and 321 transitions. Second operand 5 states. [2020-07-20 16:25:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:11,847 INFO L93 Difference]: Finished difference Result 495 states and 644 transitions. [2020-07-20 16:25:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:25:11,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-07-20 16:25:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:11,851 INFO L225 Difference]: With dead ends: 495 [2020-07-20 16:25:11,851 INFO L226 Difference]: Without dead ends: 263 [2020-07-20 16:25:11,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:25:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-07-20 16:25:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-07-20 16:25:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-07-20 16:25:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 327 transitions. [2020-07-20 16:25:11,876 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 327 transitions. Word has length 101 [2020-07-20 16:25:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:11,876 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 327 transitions. [2020-07-20 16:25:11,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:25:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 327 transitions. [2020-07-20 16:25:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-20 16:25:11,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:11,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:12,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:12,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:12,095 INFO L82 PathProgramCache]: Analyzing trace with hash 826013299, now seen corresponding path program 1 times [2020-07-20 16:25:12,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:12,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676504434] [2020-07-20 16:25:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:12,446 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:12,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:12,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:25:12,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 16:25:12,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:12,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676504434] [2020-07-20 16:25:12,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:12,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:12,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964240023] [2020-07-20 16:25:12,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:12,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:12,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:12,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:12,489 INFO L87 Difference]: Start difference. First operand 263 states and 327 transitions. Second operand 6 states. [2020-07-20 16:25:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:12,529 INFO L93 Difference]: Finished difference Result 503 states and 643 transitions. [2020-07-20 16:25:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:25:12,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-07-20 16:25:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:12,532 INFO L225 Difference]: With dead ends: 503 [2020-07-20 16:25:12,533 INFO L226 Difference]: Without dead ends: 264 [2020-07-20 16:25:12,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:25:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-20 16:25:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2020-07-20 16:25:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-07-20 16:25:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-07-20 16:25:12,554 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 101 [2020-07-20 16:25:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:12,555 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-07-20 16:25:12,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-07-20 16:25:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-20 16:25:12,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:12,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:12,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:12,772 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:12,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:12,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1801818698, now seen corresponding path program 1 times [2020-07-20 16:25:12,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:12,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231717715] [2020-07-20 16:25:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:13,178 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:13,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:13,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:25:13,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:13,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:13,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231717715] [2020-07-20 16:25:13,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:13,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:13,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341604098] [2020-07-20 16:25:13,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:13,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:13,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:13,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:13,274 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 6 states. [2020-07-20 16:25:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:14,084 INFO L93 Difference]: Finished difference Result 718 states and 946 transitions. [2020-07-20 16:25:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:25:14,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-07-20 16:25:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:14,089 INFO L225 Difference]: With dead ends: 718 [2020-07-20 16:25:14,089 INFO L226 Difference]: Without dead ends: 478 [2020-07-20 16:25:14,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:25:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-07-20 16:25:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 462. [2020-07-20 16:25:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-07-20 16:25:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 580 transitions. [2020-07-20 16:25:14,121 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 580 transitions. Word has length 101 [2020-07-20 16:25:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:14,122 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 580 transitions. [2020-07-20 16:25:14,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 580 transitions. [2020-07-20 16:25:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-20 16:25:14,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:14,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:14,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:14,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:14,341 INFO L82 PathProgramCache]: Analyzing trace with hash 874410940, now seen corresponding path program 1 times [2020-07-20 16:25:14,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:14,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003174285] [2020-07-20 16:25:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:14,677 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:14,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:14,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 16:25:14,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 16:25:14,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:14,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003174285] [2020-07-20 16:25:14,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:14,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:25:14,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659018025] [2020-07-20 16:25:14,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:25:14,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:14,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:25:14,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:14,747 INFO L87 Difference]: Start difference. First operand 462 states and 580 transitions. Second operand 3 states. [2020-07-20 16:25:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:14,794 INFO L93 Difference]: Finished difference Result 1286 states and 1646 transitions. [2020-07-20 16:25:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:25:14,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-07-20 16:25:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:14,806 INFO L225 Difference]: With dead ends: 1286 [2020-07-20 16:25:14,806 INFO L226 Difference]: Without dead ends: 848 [2020-07-20 16:25:14,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-07-20 16:25:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2020-07-20 16:25:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-07-20 16:25:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1025 transitions. [2020-07-20 16:25:14,860 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1025 transitions. Word has length 105 [2020-07-20 16:25:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:14,861 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 1025 transitions. [2020-07-20 16:25:14,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:25:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1025 transitions. [2020-07-20 16:25:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 16:25:14,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:14,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:15,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:15,078 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:15,079 INFO L82 PathProgramCache]: Analyzing trace with hash 545415751, now seen corresponding path program 1 times [2020-07-20 16:25:15,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:15,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902734566] [2020-07-20 16:25:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:15,388 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:15,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:15,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 16:25:15,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 16:25:15,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:15,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902734566] [2020-07-20 16:25:15,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:15,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:25:15,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706175063] [2020-07-20 16:25:15,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:25:15,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:15,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:25:15,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:15,422 INFO L87 Difference]: Start difference. First operand 812 states and 1025 transitions. Second operand 3 states. [2020-07-20 16:25:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:15,514 INFO L93 Difference]: Finished difference Result 1044 states and 1316 transitions. [2020-07-20 16:25:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:25:15,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-07-20 16:25:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:15,518 INFO L225 Difference]: With dead ends: 1044 [2020-07-20 16:25:15,518 INFO L226 Difference]: Without dead ends: 482 [2020-07-20 16:25:15,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-07-20 16:25:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 426. [2020-07-20 16:25:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-07-20 16:25:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 525 transitions. [2020-07-20 16:25:15,547 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 525 transitions. Word has length 111 [2020-07-20 16:25:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:15,548 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 525 transitions. [2020-07-20 16:25:15,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:25:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 525 transitions. [2020-07-20 16:25:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-07-20 16:25:15,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:15,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:15,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:15,764 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1129880655, now seen corresponding path program 1 times [2020-07-20 16:25:15,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:15,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117803208] [2020-07-20 16:25:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:16,192 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:16,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:25:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:16,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 16:25:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:25:16,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117803208] [2020-07-20 16:25:16,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 16:25:16,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-20 16:25:16,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410390527] [2020-07-20 16:25:16,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 16:25:16,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:16,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 16:25:16,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 16:25:16,574 INFO L87 Difference]: Start difference. First operand 426 states and 525 transitions. Second operand 12 states. [2020-07-20 16:25:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:18,055 INFO L93 Difference]: Finished difference Result 1185 states and 1594 transitions. [2020-07-20 16:25:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 16:25:18,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-07-20 16:25:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:18,063 INFO L225 Difference]: With dead ends: 1185 [2020-07-20 16:25:18,063 INFO L226 Difference]: Without dead ends: 671 [2020-07-20 16:25:18,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-20 16:25:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-07-20 16:25:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 528. [2020-07-20 16:25:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-07-20 16:25:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 651 transitions. [2020-07-20 16:25:18,109 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 651 transitions. Word has length 113 [2020-07-20 16:25:18,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:18,110 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 651 transitions. [2020-07-20 16:25:18,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 16:25:18,111 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 651 transitions. [2020-07-20 16:25:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-20 16:25:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:18,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:18,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:18,330 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash -127576802, now seen corresponding path program 2 times [2020-07-20 16:25:18,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:18,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178868016] [2020-07-20 16:25:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:18,700 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:18,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:25:18,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:25:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:25:18,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:25:19,105 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:25:19,106 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:25:19,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:19,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:25:19 BoogieIcfgContainer [2020-07-20 16:25:19,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:25:19,557 INFO L168 Benchmark]: Toolchain (without parser) took 13302.02 ms. Allocated memory was 145.8 MB in the beginning and 353.4 MB in the end (delta: 207.6 MB). Free memory was 102.7 MB in the beginning and 112.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 197.5 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:19,558 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:25:19,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.82 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 102.3 MB in the beginning and 174.4 MB in the end (delta: -72.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:19,560 INFO L168 Benchmark]: Boogie Preprocessor took 87.24 ms. Allocated memory is still 203.9 MB. Free memory was 174.4 MB in the beginning and 170.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:19,561 INFO L168 Benchmark]: RCFGBuilder took 1090.14 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 170.0 MB in the beginning and 202.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:19,562 INFO L168 Benchmark]: TraceAbstraction took 11487.04 ms. Allocated memory was 237.5 MB in the beginning and 353.4 MB in the end (delta: 115.9 MB). Free memory was 201.2 MB in the beginning and 112.9 MB in the end (delta: 88.3 MB). Peak memory consumption was 204.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:19,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.82 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 102.3 MB in the beginning and 174.4 MB in the end (delta: -72.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.24 ms. Allocated memory is still 203.9 MB. Free memory was 174.4 MB in the beginning and 170.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1090.14 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 170.0 MB in the beginning and 202.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11487.04 ms. Allocated memory was 237.5 MB in the beginning and 353.4 MB in the end (delta: 115.9 MB). Free memory was 201.2 MB in the beginning and 112.9 MB in the end (delta: 88.3 MB). Peak memory consumption was 204.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 784]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L148] int pumpRunning = 0; [L149] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L583] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=46, \old(head)=27, \old(head)=94, \old(methaneLevelCritical)=56, \old(pumpRunning)=51, \old(systemActive)=37, \old(waterLevel)=95, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L391] int retValue_acc ; [L392] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L396] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L397] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L398] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L815] int retValue_acc ; [L818] retValue_acc = 1 [L819] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L398] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L402] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L403] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L382] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L67] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L67] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L100] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L155] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L184] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L187] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L904] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L287] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L189] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L193] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L212] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L193] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L164] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L170] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L116] int tmp ; [L117] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L121] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L121] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L170] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L100] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L55] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L57] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L100] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L162] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L184] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L202] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L116] int tmp ; [L117] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L121] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L121] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L170] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L100] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L55] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L100] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L157] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L162] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L184] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L202] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L116] int tmp ; [L117] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L121] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L121] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L121] tmp = getWaterLevel() [L123] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L125] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L125] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L125] tmp___0 = isPumpRunning() [L127] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L129] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L784] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1412 SDtfs, 863 SDslu, 2161 SDs, 0 SdLazy, 1538 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 955 GetRequests, 905 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=812occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 254 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 979 NumberOfCodeBlocks, 797 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 933 ConstructedInterpolants, 0 QuantifiedInterpolants, 155185 SizeOfPredicates, 32 NumberOfNonLiveVariables, 6696 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 130/143 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...