/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:55:01,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:55:01,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:55:01,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:55:01,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:55:01,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:55:01,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:55:01,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:55:01,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:55:01,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:55:01,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:55:01,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:55:01,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:55:01,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:55:01,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:55:01,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:55:01,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:55:01,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:55:01,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:55:01,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:55:01,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:55:01,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:55:01,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:55:01,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:55:01,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:55:01,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:55:01,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:55:01,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:55:01,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:55:01,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:55:01,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:55:01,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:55:01,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:55:01,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:55:01,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:55:01,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:55:01,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:55:01,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:55:01,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:55:01,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:55:01,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:55:01,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:55:01,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:55:01,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:55:01,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:55:01,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:55:01,977 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:55:01,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:55:01,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:55:01,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:55:01,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:55:01,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:55:01,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:55:01,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:55:01,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:55:01,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:55:01,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:55:01,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:55:01,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:55:01,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:55:01,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:55:01,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:55:01,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:55:01,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:55:01,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:55:01,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:55:01,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:55:01,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:55:01,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:55:01,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:55:01,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:55:01,981 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:55:02,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:55:02,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:55:02,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:55:02,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:55:02,323 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:55:02,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-08-19 00:55:02,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5217ce29/dad376a3b41b4eb9bc634aeafcced2c4/FLAG6e553fd6e [2020-08-19 00:55:02,893 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:55:02,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-08-19 00:55:02,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5217ce29/dad376a3b41b4eb9bc634aeafcced2c4/FLAG6e553fd6e [2020-08-19 00:55:03,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5217ce29/dad376a3b41b4eb9bc634aeafcced2c4 [2020-08-19 00:55:03,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:55:03,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:55:03,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:55:03,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:55:03,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:55:03,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:55:03" (1/1) ... [2020-08-19 00:55:03,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cc7f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:03, skipping insertion in model container [2020-08-19 00:55:03,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:55:03" (1/1) ... [2020-08-19 00:55:03,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:55:03,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:55:03,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:55:03,858 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:55:03,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:55:04,001 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:55:04,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04 WrapperNode [2020-08-19 00:55:04,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:55:04,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:55:04,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:55:04,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:55:04,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... [2020-08-19 00:55:04,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:55:04,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:55:04,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:55:04,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:55:04,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:55:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:55:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:55:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:55:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:55:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:55:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:55:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:55:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:55:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:55:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:55:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:55:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:55:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:55:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:55:04,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:55:04,197 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:55:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:55:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:55:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:55:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:55:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:55:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:55:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:55:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:55:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:55:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:55:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:55:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:55:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:55:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:55:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:55:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:55:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:55:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:55:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:55:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:55:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:55:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:55:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:55:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:55:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:55:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:55:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:55:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:55:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:55:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:55:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:55:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:55:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:55:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:55:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:55:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:55:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:55:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:55:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:55:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:55:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:55:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:55:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:55:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:55:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:55:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:55:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:55:04,209 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:55:04,209 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:55:04,209 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:55:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:55:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:55:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:55:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:55:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:55:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:55:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:55:07,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:55:07,421 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:55:07,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:55:07 BoogieIcfgContainer [2020-08-19 00:55:07,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:55:07,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:55:07,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:55:07,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:55:07,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:55:03" (1/3) ... [2020-08-19 00:55:07,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769aa581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:55:07, skipping insertion in model container [2020-08-19 00:55:07,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:04" (2/3) ... [2020-08-19 00:55:07,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769aa581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:55:07, skipping insertion in model container [2020-08-19 00:55:07,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:55:07" (3/3) ... [2020-08-19 00:55:07,440 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-08-19 00:55:07,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:55:07,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:55:07,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:55:07,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:55:07,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:55:07,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:55:07,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:55:07,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:55:07,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:55:07,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:55:07,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:55:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-08-19 00:55:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:55:07,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:07,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:07,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1875422794, now seen corresponding path program 1 times [2020-08-19 00:55:07,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:07,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954469639] [2020-08-19 00:55:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,334 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:55:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:55:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:08,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954469639] [2020-08-19 00:55:08,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:08,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:55:08,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255779943] [2020-08-19 00:55:08,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:55:08,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:08,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:55:08,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:55:08,448 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-08-19 00:55:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:09,664 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-19 00:55:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:55:09,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:55:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:09,681 INFO L225 Difference]: With dead ends: 320 [2020-08-19 00:55:09,681 INFO L226 Difference]: Without dead ends: 173 [2020-08-19 00:55:09,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:55:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-19 00:55:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-19 00:55:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 00:55:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 00:55:09,782 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-19 00:55:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:09,783 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 00:55:09,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:55:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 00:55:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:55:09,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:09,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:09,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:55:09,787 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2108875382, now seen corresponding path program 1 times [2020-08-19 00:55:09,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:09,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215625626] [2020-08-19 00:55:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,181 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:55:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:55:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:10,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215625626] [2020-08-19 00:55:10,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:10,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:55:10,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113961747] [2020-08-19 00:55:10,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:55:10,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:55:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:55:10,249 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-19 00:55:10,693 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:11,542 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-19 00:55:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:55:11,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:55:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:11,547 INFO L225 Difference]: With dead ends: 243 [2020-08-19 00:55:11,547 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 00:55:11,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:55:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 00:55:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-19 00:55:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 00:55:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-19 00:55:11,592 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-19 00:55:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:11,593 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-19 00:55:11,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:55:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-19 00:55:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:55:11,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:11,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:11,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:55:11,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:11,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2135499519, now seen corresponding path program 1 times [2020-08-19 00:55:11,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:11,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218610978] [2020-08-19 00:55:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:11,964 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:55:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:12,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218610978] [2020-08-19 00:55:12,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:12,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:55:12,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928978552] [2020-08-19 00:55:12,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:55:12,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:12,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:55:12,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:55:12,042 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 8 states. [2020-08-19 00:55:12,486 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:12,820 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:13,070 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:13,315 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:14,064 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:15,884 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2020-08-19 00:55:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:55:15,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 00:55:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:15,890 INFO L225 Difference]: With dead ends: 442 [2020-08-19 00:55:15,890 INFO L226 Difference]: Without dead ends: 337 [2020-08-19 00:55:15,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:55:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-19 00:55:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-08-19 00:55:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-19 00:55:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-19 00:55:15,998 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-19 00:55:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:15,999 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-19 00:55:15,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:55:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-19 00:55:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:55:16,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:16,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:16,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:55:16,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:16,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1973278076, now seen corresponding path program 1 times [2020-08-19 00:55:16,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:16,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273354015] [2020-08-19 00:55:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,306 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:55:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:55:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:55:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:16,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273354015] [2020-08-19 00:55:16,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:16,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:55:16,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125101931] [2020-08-19 00:55:16,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:55:16,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:16,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:55:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:55:16,388 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 8 states. [2020-08-19 00:55:16,846 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:17,867 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:18,187 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:18,464 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:18,784 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:19,198 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:20,226 INFO L93 Difference]: Finished difference Result 877 states and 1135 transitions. [2020-08-19 00:55:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:55:20,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 00:55:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:20,235 INFO L225 Difference]: With dead ends: 877 [2020-08-19 00:55:20,235 INFO L226 Difference]: Without dead ends: 629 [2020-08-19 00:55:20,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:55:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-19 00:55:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 499. [2020-08-19 00:55:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-08-19 00:55:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 606 transitions. [2020-08-19 00:55:20,369 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 606 transitions. Word has length 57 [2020-08-19 00:55:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:20,369 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 606 transitions. [2020-08-19 00:55:20,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:55:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 606 transitions. [2020-08-19 00:55:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 00:55:20,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:20,373 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] [2020-08-19 00:55:20,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:55:20,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:20,374 INFO L82 PathProgramCache]: Analyzing trace with hash -820899264, now seen corresponding path program 1 times [2020-08-19 00:55:20,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:20,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752517431] [2020-08-19 00:55:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,662 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:55:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:55:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:55:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:20,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752517431] [2020-08-19 00:55:20,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:20,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:55:20,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16175378] [2020-08-19 00:55:20,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:55:20,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:20,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:55:20,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:55:20,766 INFO L87 Difference]: Start difference. First operand 499 states and 606 transitions. Second operand 9 states. [2020-08-19 00:55:21,299 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:22,309 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:22,609 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:22,857 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:55:23,487 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:23,818 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:24,854 INFO L93 Difference]: Finished difference Result 1401 states and 1876 transitions. [2020-08-19 00:55:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:55:24,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 00:55:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:24,864 INFO L225 Difference]: With dead ends: 1401 [2020-08-19 00:55:24,864 INFO L226 Difference]: Without dead ends: 926 [2020-08-19 00:55:24,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:55:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-08-19 00:55:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 739. [2020-08-19 00:55:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-08-19 00:55:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 907 transitions. [2020-08-19 00:55:25,000 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 907 transitions. Word has length 61 [2020-08-19 00:55:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:25,001 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 907 transitions. [2020-08-19 00:55:25,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:55:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 907 transitions. [2020-08-19 00:55:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:55:25,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:25,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:25,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:55:25,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:25,005 INFO L82 PathProgramCache]: Analyzing trace with hash 16386475, now seen corresponding path program 1 times [2020-08-19 00:55:25,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:25,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203186490] [2020-08-19 00:55:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,250 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:55:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:55:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:25,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203186490] [2020-08-19 00:55:25,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:25,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:55:25,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396602006] [2020-08-19 00:55:25,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:55:25,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:25,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:55:25,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:55:25,395 INFO L87 Difference]: Start difference. First operand 739 states and 907 transitions. Second operand 9 states. [2020-08-19 00:55:26,559 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:26,786 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:55:27,041 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:27,271 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:28,330 INFO L93 Difference]: Finished difference Result 1717 states and 2277 transitions. [2020-08-19 00:55:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:55:28,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 00:55:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:28,344 INFO L225 Difference]: With dead ends: 1717 [2020-08-19 00:55:28,344 INFO L226 Difference]: Without dead ends: 1002 [2020-08-19 00:55:28,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:55:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-08-19 00:55:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 765. [2020-08-19 00:55:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-19 00:55:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 935 transitions. [2020-08-19 00:55:28,589 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 935 transitions. Word has length 84 [2020-08-19 00:55:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:28,590 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 935 transitions. [2020-08-19 00:55:28,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:55:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 935 transitions. [2020-08-19 00:55:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:55:28,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:28,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:28,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:55:28,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:28,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:28,597 INFO L82 PathProgramCache]: Analyzing trace with hash 39018729, now seen corresponding path program 1 times [2020-08-19 00:55:28,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:28,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085645414] [2020-08-19 00:55:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:28,988 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:28,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:55:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:55:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:29,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085645414] [2020-08-19 00:55:29,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:29,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:55:29,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074428150] [2020-08-19 00:55:29,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:55:29,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:29,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:55:29,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:55:29,132 INFO L87 Difference]: Start difference. First operand 765 states and 935 transitions. Second operand 11 states. [2020-08-19 00:55:29,943 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:30,214 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:30,439 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:31,170 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:31,443 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:31,702 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:32,979 INFO L93 Difference]: Finished difference Result 1771 states and 2388 transitions. [2020-08-19 00:55:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:55:32,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-19 00:55:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:32,989 INFO L225 Difference]: With dead ends: 1771 [2020-08-19 00:55:32,989 INFO L226 Difference]: Without dead ends: 1030 [2020-08-19 00:55:32,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:55:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-08-19 00:55:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 781. [2020-08-19 00:55:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2020-08-19 00:55:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 951 transitions. [2020-08-19 00:55:33,182 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 951 transitions. Word has length 84 [2020-08-19 00:55:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:33,182 INFO L479 AbstractCegarLoop]: Abstraction has 781 states and 951 transitions. [2020-08-19 00:55:33,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:55:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 951 transitions. [2020-08-19 00:55:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:55:33,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:33,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:33,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:55:33,187 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1064510728, now seen corresponding path program 1 times [2020-08-19 00:55:33,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:33,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857367981] [2020-08-19 00:55:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,492 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:55:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:55:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:33,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857367981] [2020-08-19 00:55:33,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:33,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:55:33,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036433648] [2020-08-19 00:55:33,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:55:33,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:33,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:55:33,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:55:33,641 INFO L87 Difference]: Start difference. First operand 781 states and 951 transitions. Second operand 7 states. [2020-08-19 00:55:34,140 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:34,616 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:55:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:37,026 INFO L93 Difference]: Finished difference Result 2699 states and 3665 transitions. [2020-08-19 00:55:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:55:37,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-19 00:55:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:37,040 INFO L225 Difference]: With dead ends: 2699 [2020-08-19 00:55:37,040 INFO L226 Difference]: Without dead ends: 1942 [2020-08-19 00:55:37,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:55:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-08-19 00:55:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1619. [2020-08-19 00:55:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-08-19 00:55:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 1989 transitions. [2020-08-19 00:55:37,424 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 1989 transitions. Word has length 84 [2020-08-19 00:55:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:37,425 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 1989 transitions. [2020-08-19 00:55:37,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:55:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 1989 transitions. [2020-08-19 00:55:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:55:37,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:37,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:37,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:55:37,430 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1546821858, now seen corresponding path program 1 times [2020-08-19 00:55:37,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:37,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670213544] [2020-08-19 00:55:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:55:37,491 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:55:37,491 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:55:37,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:55:37,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:55:37 BoogieIcfgContainer [2020-08-19 00:55:37,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:55:37,521 INFO L168 Benchmark]: Toolchain (without parser) took 34248.45 ms. Allocated memory was 147.3 MB in the beginning and 610.8 MB in the end (delta: 463.5 MB). Free memory was 102.9 MB in the beginning and 496.7 MB in the end (delta: -393.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:37,522 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:55:37,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.34 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 170.7 MB in the end (delta: -68.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:37,524 INFO L168 Benchmark]: Boogie Preprocessor took 111.52 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:37,524 INFO L168 Benchmark]: RCFGBuilder took 3316.74 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 194.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:37,525 INFO L168 Benchmark]: TraceAbstraction took 30087.37 ms. Allocated memory was 235.9 MB in the beginning and 610.8 MB in the end (delta: 374.9 MB). Free memory was 193.3 MB in the beginning and 496.7 MB in the end (delta: -303.4 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:37,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.34 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 170.7 MB in the end (delta: -68.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.52 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3316.74 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 194.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30087.37 ms. Allocated memory was 235.9 MB in the beginning and 610.8 MB in the end (delta: 374.9 MB). Free memory was 193.3 MB in the beginning and 496.7 MB in the end (delta: -303.4 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int retValue_acc ; [L535] int tmp ; [L539] FCALL select_helpers() [L540] FCALL select_features() [L541] CALL, EXPR valid_product() [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); [L541] RET, EXPR valid_product() [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) [L545] FCALL setup() [L546] CALL runTest() [L525] CALL test() [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 [L399] COND TRUE 1 [L401] COND TRUE splverifierCounter < 4 [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) [L411] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L411] RET waterRise() [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) [L421] CALL changeMethaneLevel() [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 [L421] RET changeMethaneLevel() [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___2)) [L435] tmp___1 = __VERIFIER_nondet_int() [L437] COND FALSE !(\read(tmp___1)) [L446] CALL timeShift() [L166] COND FALSE !(\read(pumpRunning)) [L173] COND TRUE \read(systemActive) [L175] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__highWaterSensor() [L195] int tmp ; [L198] COND TRUE ! pumpRunning [L200] CALL, EXPR isHighWaterLevel() [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; [L324] CALL, EXPR isHighWaterSensorDry() [L128] int retValue_acc ; [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); [L324] RET, EXPR isHighWaterSensorDry() [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); [L200] RET, EXPR isHighWaterLevel() [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) [L204] CALL activatePump() [L249] pumpRunning = 1 [L204] RET activatePump() [L239] RET processEnvironment__wrappee__highWaterSensor() [L175] RET processEnvironment() [L181] CALL __utac_acc__Specification1_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L563] RET, EXPR isMethaneLevelCritical() [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) [L567] CALL, EXPR isPumpRunning() [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L383] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1021 SDtfs, 1814 SDslu, 1111 SDs, 0 SdLazy, 5441 SolverSat, 1166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1254 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...