/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_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:22:12,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:22:12,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:22:12,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:22:12,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:22:12,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:22:12,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:22:12,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:22:12,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:22:12,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:22:12,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:22:12,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:22:12,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:22:12,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:22:12,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:22:12,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:22:12,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:22:12,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:22:12,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:22:12,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:22:12,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:22:12,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:22:12,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:22:12,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:22:12,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:22:12,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:22:12,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:22:12,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:22:12,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:22:12,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:22:12,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:22:12,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:22:12,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:22:12,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:22:12,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:22:12,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:22:12,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:22:12,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:22:12,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:22:12,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:22:12,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:22:12,955 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 16:22:12,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:22:12,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:22:12,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:22:12,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:22:12,974 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:22:12,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:22:12,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:22:12,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:22:12,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:22:12,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:22:12,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:22:12,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:22:12,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:22:12,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:22:12,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:22:12,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:22:12,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:22:12,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:22:12,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:22:12,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:22:12,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:22:12,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:12,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:22:12,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:22:12,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:22:12,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:22:12,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:12,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:22:12,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:22:12,981 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 16:22:13,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:22:13,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:22:13,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:22:13,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:22:13,315 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:22:13,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-07-20 16:22:13,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f99ff67/06d49cd1f8f246fc8d09de581852b058/FLAGbb2fccd5e [2020-07-20 16:22:13,939 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:22:13,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-07-20 16:22:13,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f99ff67/06d49cd1f8f246fc8d09de581852b058/FLAGbb2fccd5e [2020-07-20 16:22:14,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f99ff67/06d49cd1f8f246fc8d09de581852b058 [2020-07-20 16:22:14,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:22:14,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:22:14,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:14,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:22:14,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:22:14,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769d466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14, skipping insertion in model container [2020-07-20 16:22:14,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:22:14,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:22:14,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:14,736 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:22:14,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:14,868 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:22:14,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14 WrapperNode [2020-07-20 16:22:14,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:14,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:22:14,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:22:14,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:22:14,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (1/1) ... [2020-07-20 16:22:14,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:22:14,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:22:14,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:22:14,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:22:14,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (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 16:22:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:22:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:22:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:22:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:22:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:22:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:22:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:22:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:22:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:22:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:22:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:22:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:22:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:22:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:22:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:22:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:22:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:22:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:22:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:22:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:22:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:22:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:22:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:22:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:22:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:22:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:22:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:22:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:22:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:22:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:22:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:22:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:22:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:22:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:22:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:22:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:22:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:22:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:22:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:22:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:22:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:22:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:22:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:22:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:22:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:22:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:22:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:22:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:22:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:22:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:22:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:22:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:22:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:22:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:22:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:22:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:22:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:22:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:22:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:22:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:22:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:22:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:22:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:22:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:22:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:22:15,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:22:16,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:22:16,084 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:22:16,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:16 BoogieIcfgContainer [2020-07-20 16:22:16,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:22:16,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:22:16,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:22:16,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:22:16,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:22:14" (1/3) ... [2020-07-20 16:22:16,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14102a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:16, skipping insertion in model container [2020-07-20 16:22:16,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:14" (2/3) ... [2020-07-20 16:22:16,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14102a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:16, skipping insertion in model container [2020-07-20 16:22:16,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:16" (3/3) ... [2020-07-20 16:22:16,098 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-07-20 16:22:16,109 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:22:16,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:22:16,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:22:16,157 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:22:16,157 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:22:16,158 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:22:16,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:22:16,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:22:16,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:22:16,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:22:16,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:22:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-07-20 16:22:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:22:16,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:16,208 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 16:22:16,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:16,214 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-07-20 16:22:16,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:16,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897371523] [2020-07-20 16:22:16,222 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 16:22:16,737 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:16,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:22:16,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:16,786 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 16:22:16,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:16,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897371523] [2020-07-20 16:22:16,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:16,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:22:16,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202544012] [2020-07-20 16:22:16,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:22:16,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:16,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:22:16,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:16,818 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 2 states. [2020-07-20 16:22:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:16,863 INFO L93 Difference]: Finished difference Result 210 states and 263 transitions. [2020-07-20 16:22:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:22:16,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:22:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:16,877 INFO L225 Difference]: With dead ends: 210 [2020-07-20 16:22:16,878 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 16:22:16,882 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 16:22:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 16:22:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-20 16:22:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-20 16:22:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-07-20 16:22:16,960 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-07-20 16:22:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:16,961 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-07-20 16:22:16,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:22:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-07-20 16:22:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:22:16,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:16,966 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 16:22:17,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:17,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:17,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-07-20 16:22:17,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:17,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345318302] [2020-07-20 16:22:17,185 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 16:22:17,556 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:17,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:17,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:17,598 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 16:22:17,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:17,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345318302] [2020-07-20 16:22:17,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:17,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:17,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565479103] [2020-07-20 16:22:17,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:17,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:17,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:17,602 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 3 states. [2020-07-20 16:22:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:17,628 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2020-07-20 16:22:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:17,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:22:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:17,630 INFO L225 Difference]: With dead ends: 159 [2020-07-20 16:22:17,631 INFO L226 Difference]: Without dead ends: 96 [2020-07-20 16:22:17,632 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 16:22:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-20 16:22:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-20 16:22:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-20 16:22:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-07-20 16:22:17,644 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-07-20 16:22:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:17,644 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-07-20 16:22:17,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-07-20 16:22:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 16:22:17,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:17,647 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 16:22:17,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:17,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:17,863 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-07-20 16:22:17,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:17,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483431418] [2020-07-20 16:22:17,865 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 16:22:18,262 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:18,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:18,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:18,286 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 16:22:18,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:18,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483431418] [2020-07-20 16:22:18,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:18,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:18,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765286845] [2020-07-20 16:22:18,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:18,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:18,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:18,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:18,289 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 3 states. [2020-07-20 16:22:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:18,306 INFO L93 Difference]: Finished difference Result 168 states and 199 transitions. [2020-07-20 16:22:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:18,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 16:22:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:18,311 INFO L225 Difference]: With dead ends: 168 [2020-07-20 16:22:18,312 INFO L226 Difference]: Without dead ends: 96 [2020-07-20 16:22:18,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 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 16:22:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-20 16:22:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-20 16:22:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-20 16:22:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-07-20 16:22:18,334 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-07-20 16:22:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:18,334 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-07-20 16:22:18,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-07-20 16:22:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 16:22:18,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:18,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:18,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:18,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:18,542 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-07-20 16:22:18,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:18,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954588543] [2020-07-20 16:22:18,542 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 16:22:18,918 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:18,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:18,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 16:22:18,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:19,008 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 16:22:19,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:19,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954588543] [2020-07-20 16:22:19,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:19,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:19,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575687075] [2020-07-20 16:22:19,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:19,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:19,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:19,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:19,013 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-07-20 16:22:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:19,442 INFO L93 Difference]: Finished difference Result 221 states and 262 transitions. [2020-07-20 16:22:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:19,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-07-20 16:22:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:19,445 INFO L225 Difference]: With dead ends: 221 [2020-07-20 16:22:19,445 INFO L226 Difference]: Without dead ends: 149 [2020-07-20 16:22:19,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 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 16:22:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-20 16:22:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-07-20 16:22:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 16:22:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2020-07-20 16:22:19,465 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 59 [2020-07-20 16:22:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:19,466 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2020-07-20 16:22:19,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2020-07-20 16:22:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-07-20 16:22:19,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:19,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:19,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:19,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:19,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-07-20 16:22:19,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:19,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930602556] [2020-07-20 16:22:19,683 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 16:22:20,020 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:20,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:20,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:20,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:20,069 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 16:22:20,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:20,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930602556] [2020-07-20 16:22:20,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:20,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:20,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290759234] [2020-07-20 16:22:20,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:20,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:20,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:20,088 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 6 states. [2020-07-20 16:22:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:20,270 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2020-07-20 16:22:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:20,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-07-20 16:22:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:20,273 INFO L225 Difference]: With dead ends: 153 [2020-07-20 16:22:20,273 INFO L226 Difference]: Without dead ends: 150 [2020-07-20 16:22:20,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 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 16:22:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-07-20 16:22:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-07-20 16:22:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 16:22:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2020-07-20 16:22:20,290 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 73 [2020-07-20 16:22:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:20,291 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2020-07-20 16:22:20,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2020-07-20 16:22:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-20 16:22:20,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:20,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:20,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:20,508 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:20,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:20,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2029663829, now seen corresponding path program 1 times [2020-07-20 16:22:20,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:20,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275765786] [2020-07-20 16:22:20,510 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 16:22:20,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:20,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:20,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:20,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:20,858 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 16:22:20,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:20,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275765786] [2020-07-20 16:22:20,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:20,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:20,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947701357] [2020-07-20 16:22:20,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:20,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:20,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:20,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:20,861 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand 6 states. [2020-07-20 16:22:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:20,902 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-07-20 16:22:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:22:20,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-07-20 16:22:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:20,905 INFO L225 Difference]: With dead ends: 213 [2020-07-20 16:22:20,905 INFO L226 Difference]: Without dead ends: 151 [2020-07-20 16:22:20,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 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 16:22:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-20 16:22:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-07-20 16:22:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-07-20 16:22:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2020-07-20 16:22:20,922 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 74 [2020-07-20 16:22:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:20,922 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2020-07-20 16:22:20,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2020-07-20 16:22:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-20 16:22:20,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:20,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:21,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,137 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1520190739, now seen corresponding path program 1 times [2020-07-20 16:22:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:21,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994214544] [2020-07-20 16:22:21,140 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 16:22:21,272 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:21,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:21,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:22:21,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:21,307 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 16:22:21,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:21,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994214544] [2020-07-20 16:22:21,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:21,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:21,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619337471] [2020-07-20 16:22:21,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:21,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:21,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:21,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:21,310 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand 5 states. [2020-07-20 16:22:21,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:21,331 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2020-07-20 16:22:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:21,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-07-20 16:22:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:21,333 INFO L225 Difference]: With dead ends: 285 [2020-07-20 16:22:21,333 INFO L226 Difference]: Without dead ends: 158 [2020-07-20 16:22:21,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 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 16:22:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-20 16:22:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2020-07-20 16:22:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-20 16:22:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2020-07-20 16:22:21,352 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 74 [2020-07-20 16:22:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:21,352 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2020-07-20 16:22:21,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2020-07-20 16:22:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-20 16:22:21,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:21,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:21,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,571 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash -489913102, now seen corresponding path program 1 times [2020-07-20 16:22:21,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:21,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685901436] [2020-07-20 16:22:21,574 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 16:22:21,949 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:21,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:21,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:22:21,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:21,986 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 16:22:21,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:21,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685901436] [2020-07-20 16:22:21,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:21,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:21,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751389052] [2020-07-20 16:22:21,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:21,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:21,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:21,991 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand 3 states. [2020-07-20 16:22:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:22,037 INFO L93 Difference]: Finished difference Result 391 states and 462 transitions. [2020-07-20 16:22:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:22,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-07-20 16:22:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:22,041 INFO L225 Difference]: With dead ends: 391 [2020-07-20 16:22:22,041 INFO L226 Difference]: Without dead ends: 260 [2020-07-20 16:22:22,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 1 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 16:22:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-07-20 16:22:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2020-07-20 16:22:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-20 16:22:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 298 transitions. [2020-07-20 16:22:22,093 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 298 transitions. Word has length 74 [2020-07-20 16:22:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:22,094 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 298 transitions. [2020-07-20 16:22:22,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 298 transitions. [2020-07-20 16:22:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 16:22:22,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:22,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:22,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:22,299 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:22,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1837775348, now seen corresponding path program 1 times [2020-07-20 16:22:22,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:22,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513171563] [2020-07-20 16:22:22,300 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 16:22:22,645 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:22,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:22,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:22:22,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:22,703 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 16:22:22,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:22,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513171563] [2020-07-20 16:22:22,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:22,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:22,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827391099] [2020-07-20 16:22:22,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:22,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:22,707 INFO L87 Difference]: Start difference. First operand 257 states and 298 transitions. Second operand 6 states. [2020-07-20 16:22:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:22,931 INFO L93 Difference]: Finished difference Result 704 states and 847 transitions. [2020-07-20 16:22:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:22,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-20 16:22:22,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:22,935 INFO L225 Difference]: With dead ends: 704 [2020-07-20 16:22:22,935 INFO L226 Difference]: Without dead ends: 471 [2020-07-20 16:22:22,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 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 16:22:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-07-20 16:22:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 463. [2020-07-20 16:22:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-07-20 16:22:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 540 transitions. [2020-07-20 16:22:22,971 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 540 transitions. Word has length 78 [2020-07-20 16:22:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:22,972 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 540 transitions. [2020-07-20 16:22:22,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 540 transitions. [2020-07-20 16:22:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-20 16:22:22,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:22,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:23,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:23,188 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:23,189 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-07-20 16:22:23,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:23,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797032785] [2020-07-20 16:22:23,191 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 16:22:23,573 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:23,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:22:23,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:22:23,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:23,902 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:22:23,902 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:22:24,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:24,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:22:24 BoogieIcfgContainer [2020-07-20 16:22:24,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:22:24,271 INFO L168 Benchmark]: Toolchain (without parser) took 10013.86 ms. Allocated memory was 137.9 MB in the beginning and 324.5 MB in the end (delta: 186.6 MB). Free memory was 101.3 MB in the beginning and 204.4 MB in the end (delta: -103.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:24,272 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:22:24,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.20 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 172.7 MB in the end (delta: -71.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:24,273 INFO L168 Benchmark]: Boogie Preprocessor took 117.96 ms. Allocated memory is still 202.4 MB. Free memory was 172.7 MB in the beginning and 168.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:24,274 INFO L168 Benchmark]: RCFGBuilder took 1101.87 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 168.2 MB in the beginning and 200.5 MB in the end (delta: -32.3 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:24,275 INFO L168 Benchmark]: TraceAbstraction took 8176.80 ms. Allocated memory was 233.8 MB in the beginning and 324.5 MB in the end (delta: 90.7 MB). Free memory was 200.5 MB in the beginning and 204.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:24,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 611.20 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 172.7 MB in the end (delta: -71.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.96 ms. Allocated memory is still 202.4 MB. Free memory was 172.7 MB in the beginning and 168.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1101.87 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 168.2 MB in the beginning and 200.5 MB in the end (delta: -32.3 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8176.80 ms. Allocated memory was 233.8 MB in the beginning and 324.5 MB in the end (delta: 90.7 MB). Free memory was 200.5 MB in the beginning and 204.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=59, \old(head)=63, \old(head)=39, \old(methaneLevelCritical)=28, \old(pumpRunning)=27, \old(systemActive)=68, \old(waterLevel)=36, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] int retValue_acc ; [L757] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L761] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L762] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L763] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L763] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L767] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L768] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L750] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L590] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L592] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L602] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L602] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L612] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L633] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L439] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L461] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L464] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L564] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L886] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L564] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L466] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L470] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L489] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L470] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L441] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L447] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L780] int tmp ; [L781] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L785] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L785] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L789] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L789] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L793] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L410] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1074 SDtfs, 450 SDslu, 1729 SDs, 0 SdLazy, 386 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 545 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 658 NumberOfCodeBlocks, 551 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 567 ConstructedInterpolants, 0 QuantifiedInterpolants, 66335 SizeOfPredicates, 17 NumberOfNonLiveVariables, 5602 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...