/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=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:47:21,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:47:21,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:47:21,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:47:21,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:47:21,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:47:21,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:47:21,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:47:21,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:47:21,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:47:21,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:47:21,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:47:21,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:47:21,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:47:21,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:47:21,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:47:21,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:47:21,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:47:21,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:47:21,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:47:21,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:47:21,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:47:21,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:47:21,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:47:21,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:47:21,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:47:21,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:47:21,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:47:21,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:47:21,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:47:21,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:47:21,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:47:21,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:47:21,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:47:21,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:47:21,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:47:21,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:47:21,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:47:21,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:47:21,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:47:21,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:47:21,260 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 01:47:21,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:47:21,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:47:21,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:47:21,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:47:21,304 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:47:21,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:47:21,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:47:21,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:47:21,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:47:21,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:47:21,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:47:21,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:47:21,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:47:21,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:47:21,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:47:21,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:47:21,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:47:21,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:47:21,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:47:21,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:47:21,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:47:21,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:47:21,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:47:21,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:47:21,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:47:21,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:47:21,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:47:21,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:47:21,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:47:21,310 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=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:47:21,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:47:21,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:47:21,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:47:21,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:47:21,696 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:47:21,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c [2020-08-19 01:47:21,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc4608551/436d4ad042934b508dc6bfffbf5bbb45/FLAG9d07a24ce [2020-08-19 01:47:22,296 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:47:22,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c [2020-08-19 01:47:22,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc4608551/436d4ad042934b508dc6bfffbf5bbb45/FLAG9d07a24ce [2020-08-19 01:47:22,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc4608551/436d4ad042934b508dc6bfffbf5bbb45 [2020-08-19 01:47:22,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:47:22,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:47:22,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:47:22,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:47:22,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:47:22,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:47:22" (1/1) ... [2020-08-19 01:47:22,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30380f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:22, skipping insertion in model container [2020-08-19 01:47:22,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:47:22" (1/1) ... [2020-08-19 01:47:22,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:47:22,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:47:22,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:47:23,116 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:47:23,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:47:23,230 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:47:23,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23 WrapperNode [2020-08-19 01:47:23,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:47:23,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:47:23,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:47:23,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:47:23,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (1/1) ... [2020-08-19 01:47:23,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:47:23,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:47:23,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:47:23,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:47:23,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (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 01:47:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:47:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:47:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:47:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:47:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:47:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:47:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:47:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:47:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 01:47:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:47:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:47:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:47:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-19 01:47:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:47:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:47:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:47:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:47:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:47:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:47:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:47:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:47:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:47:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:47:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:47:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:47:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:47:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:47:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:47:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:47:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:47:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:47:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:47:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:47:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:47:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:47:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:47:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:47:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:47:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:47:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:47:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:47:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:47:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:47:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:47:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:47:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:47:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:47:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:47:24,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:47:24,502 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:47:24,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:47:24 BoogieIcfgContainer [2020-08-19 01:47:24,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:47:24,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:47:24,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:47:24,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:47:24,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:47:22" (1/3) ... [2020-08-19 01:47:24,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b382b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:47:24, skipping insertion in model container [2020-08-19 01:47:24,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:23" (2/3) ... [2020-08-19 01:47:24,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b382b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:47:24, skipping insertion in model container [2020-08-19 01:47:24,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:47:24" (3/3) ... [2020-08-19 01:47:24,516 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product14.cil.c [2020-08-19 01:47:24,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:47:24,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:47:24,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:47:24,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:47:24,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:47:24,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:47:24,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:47:24,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:47:24,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:47:24,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:47:24,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:47:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-19 01:47:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:47:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:24,616 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 01:47:24,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash 940922037, now seen corresponding path program 1 times [2020-08-19 01:47:24,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:24,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356847093] [2020-08-19 01:47:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,290 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:47:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:47:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:47:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:47:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:25,459 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 01:47:25,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356847093] [2020-08-19 01:47:25,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:47:25,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:47:25,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301206832] [2020-08-19 01:47:25,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:47:25,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:25,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:47:25,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:47:25,508 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-19 01:47:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:26,579 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-19 01:47:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:47:26,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 01:47:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:26,597 INFO L225 Difference]: With dead ends: 258 [2020-08-19 01:47:26,597 INFO L226 Difference]: Without dead ends: 140 [2020-08-19 01:47:26,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:47:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-19 01:47:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-19 01:47:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-19 01:47:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-19 01:47:26,692 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-19 01:47:26,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:26,693 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-19 01:47:26,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:47:26,693 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-19 01:47:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 01:47:26,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:26,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:47:26,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:47:26,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:26,699 INFO L82 PathProgramCache]: Analyzing trace with hash -110013257, now seen corresponding path program 1 times [2020-08-19 01:47:26,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:26,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358232126] [2020-08-19 01:47:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,058 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:47:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:47:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:47:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:47:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:27,104 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 01:47:27,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358232126] [2020-08-19 01:47:27,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:47:27,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:47:27,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872362193] [2020-08-19 01:47:27,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:47:27,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:27,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:47:27,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:47:27,108 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-19 01:47:27,555 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:47:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:28,220 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-19 01:47:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:47:28,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 01:47:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:28,225 INFO L225 Difference]: With dead ends: 187 [2020-08-19 01:47:28,225 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 01:47:28,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:47:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 01:47:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 01:47:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 01:47:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-19 01:47:28,263 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-19 01:47:28,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:28,264 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-19 01:47:28,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:47:28,264 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-19 01:47:28,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 01:47:28,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:28,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:47:28,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:47:28,267 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:28,267 INFO L82 PathProgramCache]: Analyzing trace with hash -829955057, now seen corresponding path program 1 times [2020-08-19 01:47:28,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:28,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882370798] [2020-08-19 01:47:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,588 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:47:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:47:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:47:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:47:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:28,692 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 01:47:28,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882370798] [2020-08-19 01:47:28,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:47:28,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:47:28,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038362930] [2020-08-19 01:47:28,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:47:28,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:28,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:47:28,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:47:28,695 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-19 01:47:29,080 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:47:29,381 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:47:29,622 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:47:29,865 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:47:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:30,791 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-19 01:47:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:47:30,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 01:47:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:30,794 INFO L225 Difference]: With dead ends: 200 [2020-08-19 01:47:30,795 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 01:47:30,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:47:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 01:47:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 01:47:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 01:47:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-19 01:47:30,829 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-19 01:47:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:30,830 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-19 01:47:30,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:47:30,830 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-19 01:47:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 01:47:30,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:30,832 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] [2020-08-19 01:47:30,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:47:30,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash -715130014, now seen corresponding path program 1 times [2020-08-19 01:47:30,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:30,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493503008] [2020-08-19 01:47:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,151 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:47:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:47:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 01:47:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 01:47:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 01:47:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:31,297 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 01:47:31,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493503008] [2020-08-19 01:47:31,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:47:31,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:47:31,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697620685] [2020-08-19 01:47:31,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:47:31,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:31,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:47:31,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:47:31,301 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-19 01:47:31,640 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:47:32,981 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:47:33,273 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:47:33,496 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:47:33,883 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:47:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:34,122 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-19 01:47:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:47:34,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-19 01:47:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:34,127 INFO L225 Difference]: With dead ends: 299 [2020-08-19 01:47:34,127 INFO L226 Difference]: Without dead ends: 223 [2020-08-19 01:47:34,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:47:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-19 01:47:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-19 01:47:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-19 01:47:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-19 01:47:34,181 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-19 01:47:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:34,181 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-19 01:47:34,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:47:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-19 01:47:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:47:34,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:34,184 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] [2020-08-19 01:47:34,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:47:34,184 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:34,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:34,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1329435240, now seen corresponding path program 1 times [2020-08-19 01:47:34,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:34,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221276385] [2020-08-19 01:47:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,441 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:47:34,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:47:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:47:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:47:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:47:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 01:47:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:34,546 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 01:47:34,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221276385] [2020-08-19 01:47:34,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:47:34,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:47:34,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434526805] [2020-08-19 01:47:34,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:47:34,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:34,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:47:34,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:47:34,549 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-19 01:47:34,899 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:47:35,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:35,467 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-19 01:47:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:47:35,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 01:47:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:35,472 INFO L225 Difference]: With dead ends: 296 [2020-08-19 01:47:35,472 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 01:47:35,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:47:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 01:47:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-19 01:47:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 01:47:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-19 01:47:35,504 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 70 [2020-08-19 01:47:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:35,504 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-19 01:47:35,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:47:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-19 01:47:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:47:35,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:35,506 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] [2020-08-19 01:47:35,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:47:35,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:35,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:35,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1182747068, now seen corresponding path program 1 times [2020-08-19 01:47:35,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:35,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791524773] [2020-08-19 01:47:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:47:35,567 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:47:35,567 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:47:35,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:47:35,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:47:35 BoogieIcfgContainer [2020-08-19 01:47:35,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:47:35,596 INFO L168 Benchmark]: Toolchain (without parser) took 12997.45 ms. Allocated memory was 138.9 MB in the beginning and 446.2 MB in the end (delta: 307.2 MB). Free memory was 101.5 MB in the beginning and 325.9 MB in the end (delta: -224.4 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:47:35,597 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:47:35,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.20 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 172.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:47:35,598 INFO L168 Benchmark]: Boogie Preprocessor took 89.21 ms. Allocated memory is still 202.4 MB. Free memory was 172.2 MB in the beginning and 168.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:47:35,599 INFO L168 Benchmark]: RCFGBuilder took 1186.90 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.0 MB in the beginning and 202.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:47:35,600 INFO L168 Benchmark]: TraceAbstraction took 11085.24 ms. Allocated memory was 234.4 MB in the beginning and 446.2 MB in the end (delta: 211.8 MB). Free memory was 200.8 MB in the beginning and 325.9 MB in the end (delta: -125.2 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:47:35,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.20 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 172.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.21 ms. Allocated memory is still 202.4 MB. Free memory was 172.2 MB in the beginning and 168.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1186.90 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.0 MB in the beginning and 202.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11085.24 ms. Allocated memory was 234.4 MB in the beginning and 446.2 MB in the end (delta: 211.8 MB). Free memory was 200.8 MB in the beginning and 325.9 MB in the end (delta: -125.2 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L458] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L821] int waterLevel = 1; [L822] int methaneLevelCritical = 0; [L798] int retValue_acc ; [L799] int tmp ; [L803] FCALL select_helpers() [L804] FCALL select_features() [L805] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L805] RET, EXPR valid_product() [L805] tmp = valid_product() [L807] COND TRUE \read(tmp) [L809] FCALL setup() [L810] CALL runTest() [L792] CALL test() [L659] int splverifierCounter ; [L660] int tmp ; [L661] int tmp___0 ; [L662] int tmp___1 ; [L663] int tmp___2 ; [L666] splverifierCounter = 0 [L668] COND TRUE 1 [L670] COND TRUE splverifierCounter < 4 [L676] tmp = __VERIFIER_nondet_int() [L678] COND TRUE \read(tmp) [L680] CALL waterRise() [L839] COND TRUE waterLevel < 2 [L840] waterLevel = waterLevel + 1 [L680] RET waterRise() [L686] tmp___0 = __VERIFIER_nondet_int() [L688] COND FALSE !(\read(tmp___0)) [L696] tmp___2 = __VERIFIER_nondet_int() [L698] COND FALSE !(\read(tmp___2)) [L704] tmp___1 = __VERIFIER_nondet_int() [L706] COND TRUE \read(tmp___1) [L713] CALL timeShift() [L138] COND FALSE !(\read(pumpRunning)) [L145] COND TRUE \read(systemActive) [L147] CALL processEnvironment() [L167] int tmp ; [L170] COND FALSE !(\read(pumpRunning)) [L185] FCALL processEnvironment__wrappee__methaneQuery() [L147] RET processEnvironment() [L153] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L860] int retValue_acc ; [L863] retValue_acc = methaneLevelCritical [L864] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L892] int retValue_acc ; [L895] retValue_acc = waterLevel [L896] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 448 SDtfs, 739 SDslu, 244 SDs, 0 SdLazy, 1311 SolverSat, 526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 83938 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...