/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:58:01,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:58:01,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:58:01,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:58:01,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:58:01,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:58:01,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:58:01,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:58:01,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:58:01,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:58:01,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:58:01,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:58:01,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:58:01,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:58:01,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:58:01,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:58:01,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:58:01,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:58:01,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:58:01,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:58:01,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:58:01,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:58:01,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:58:01,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:58:01,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:58:01,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:58:01,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:58:01,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:58:01,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:58:01,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:58:01,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:58:01,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:58:01,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:58:01,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:58:01,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:58:01,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:58:01,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:58:01,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:58:01,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:58:01,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:58:01,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:58:01,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 17:58:01,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:58:01,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:58:01,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:58:01,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:58:01,358 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:58:01,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:58:01,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:58:01,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:58:01,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:58:01,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:58:01,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:58:01,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:58:01,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:58:01,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:58:01,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:58:01,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:58:01,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:58:01,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:58:01,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:58:01,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:58:01,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:58:01,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:58:01,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:58:01,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:58:01,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:58:01,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:58:01,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:58:01,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:58:01,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:58:01,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:58:01,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:58:01,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:58:01,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:58:01,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:58:01,694 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:58:01,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-21 17:58:01,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f55d7bfb/4f1c08a42c1844ea9869c27f88563357/FLAGf5ade450a [2020-08-21 17:58:02,204 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:58:02,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-21 17:58:02,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f55d7bfb/4f1c08a42c1844ea9869c27f88563357/FLAGf5ade450a [2020-08-21 17:58:02,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f55d7bfb/4f1c08a42c1844ea9869c27f88563357 [2020-08-21 17:58:02,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:58:02,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:58:02,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:58:02,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:58:02,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:58:02,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:58:02" (1/1) ... [2020-08-21 17:58:02,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3798bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:02, skipping insertion in model container [2020-08-21 17:58:02,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:58:02" (1/1) ... [2020-08-21 17:58:02,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:58:02,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:58:03,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:58:03,036 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:58:03,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:58:03,235 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:58:03,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03 WrapperNode [2020-08-21 17:58:03,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:58:03,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:58:03,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:58:03,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:58:03,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... [2020-08-21 17:58:03,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:58:03,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:58:03,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:58:03,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:58:03,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:58:03,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:58:03,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:58:03,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:58:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:58:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:58:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:58:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:58:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:58:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:58:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:58:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:58:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:58:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:58:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:58:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:58:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:58:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:58:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:58:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:58:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:58:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:58:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:58:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:58:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:58:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:58:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:58:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:58:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:58:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:58:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:58:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:58:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:58:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:58:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:58:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:58:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:58:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:58:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:58:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:58:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:58:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:58:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:58:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:58:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:58:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:58:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:58:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:58:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:58:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:58:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:58:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:58:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:58:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:58:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:58:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:58:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:58:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:58:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:58:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:58:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:58:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:58:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:58:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:58:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:58:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:58:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:58:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:58:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:58:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:58:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:58:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:58:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:58:04,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:58:04,581 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:58:04,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:04 BoogieIcfgContainer [2020-08-21 17:58:04,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:58:04,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:58:04,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:58:04,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:58:04,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:58:02" (1/3) ... [2020-08-21 17:58:04,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523b5054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:04, skipping insertion in model container [2020-08-21 17:58:04,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:03" (2/3) ... [2020-08-21 17:58:04,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523b5054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:04, skipping insertion in model container [2020-08-21 17:58:04,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:04" (3/3) ... [2020-08-21 17:58:04,595 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2020-08-21 17:58:04,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:58:04,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:58:04,626 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:58:04,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:58:04,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:58:04,650 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:58:04,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:58:04,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:58:04,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:58:04,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:58:04,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:58:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-21 17:58:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:58:04,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:04,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:04,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:04,690 INFO L82 PathProgramCache]: Analyzing trace with hash 385551815, now seen corresponding path program 1 times [2020-08-21 17:58:04,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:04,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293629831] [2020-08-21 17:58:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,327 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:05,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293629831] [2020-08-21 17:58:05,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:05,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:58:05,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166054118] [2020-08-21 17:58:05,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:58:05,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:05,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:58:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:58:05,467 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-21 17:58:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:06,624 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-21 17:58:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:58:06,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 17:58:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:06,643 INFO L225 Difference]: With dead ends: 249 [2020-08-21 17:58:06,643 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 17:58:06,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:58:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 17:58:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 17:58:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 17:58:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-21 17:58:06,747 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 52 [2020-08-21 17:58:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:06,747 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-21 17:58:06,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:58:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-21 17:58:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 17:58:06,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:06,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:06,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:58:06,752 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:06,752 INFO L82 PathProgramCache]: Analyzing trace with hash 881400109, now seen corresponding path program 1 times [2020-08-21 17:58:06,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:06,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571983589] [2020-08-21 17:58:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,106 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:58:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:58:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:07,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571983589] [2020-08-21 17:58:07,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:07,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:58:07,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925653183] [2020-08-21 17:58:07,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:58:07,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:07,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:58:07,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:58:07,161 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-21 17:58:07,587 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:08,206 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-21 17:58:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:58:08,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 17:58:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:08,209 INFO L225 Difference]: With dead ends: 182 [2020-08-21 17:58:08,209 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 17:58:08,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:58:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 17:58:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 17:58:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 17:58:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-21 17:58:08,242 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 53 [2020-08-21 17:58:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:08,242 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-21 17:58:08,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:58:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-21 17:58:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 17:58:08,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:08,245 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] [2020-08-21 17:58:08,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:58:08,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:08,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:08,246 INFO L82 PathProgramCache]: Analyzing trace with hash 633168041, now seen corresponding path program 1 times [2020-08-21 17:58:08,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:08,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171863972] [2020-08-21 17:58:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,589 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:08,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:58:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:58:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:58:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:08,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171863972] [2020-08-21 17:58:08,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:08,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:58:08,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449941722] [2020-08-21 17:58:08,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:58:08,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:58:08,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:58:08,685 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-21 17:58:09,072 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:58:09,397 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:58:09,662 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:58:09,908 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:58:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:10,774 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-21 17:58:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:58:10,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 17:58:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:10,779 INFO L225 Difference]: With dead ends: 191 [2020-08-21 17:58:10,779 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 17:58:10,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:58:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 17:58:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 17:58:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 17:58:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-21 17:58:10,842 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 57 [2020-08-21 17:58:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:10,844 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-21 17:58:10,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:58:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-21 17:58:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 17:58:10,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:10,852 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] [2020-08-21 17:58:10,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:58:10,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 119188522, now seen corresponding path program 1 times [2020-08-21 17:58:10,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:10,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625085556] [2020-08-21 17:58:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,204 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:58:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:58:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:58:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:11,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625085556] [2020-08-21 17:58:11,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:11,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:58:11,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258087160] [2020-08-21 17:58:11,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:58:11,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:11,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:58:11,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:58:11,292 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 8 states. [2020-08-21 17:58:11,640 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:58:12,908 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:58:13,206 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:58:13,431 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:58:13,785 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:58:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:14,050 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2020-08-21 17:58:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:58:14,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-21 17:58:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:14,055 INFO L225 Difference]: With dead ends: 284 [2020-08-21 17:58:14,056 INFO L226 Difference]: Without dead ends: 212 [2020-08-21 17:58:14,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:58:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-21 17:58:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2020-08-21 17:58:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-21 17:58:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2020-08-21 17:58:14,123 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 65 [2020-08-21 17:58:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:14,124 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2020-08-21 17:58:14,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:58:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2020-08-21 17:58:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 17:58:14,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:14,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:14,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:58:14,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:14,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2068866518, now seen corresponding path program 1 times [2020-08-21 17:58:14,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:14,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969195363] [2020-08-21 17:58:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,372 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:58:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:58:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 17:58:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 17:58:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:58:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:14,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969195363] [2020-08-21 17:58:14,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:14,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:58:14,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765651711] [2020-08-21 17:58:14,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:58:14,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:14,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:58:14,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:58:14,456 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 6 states. [2020-08-21 17:58:14,737 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:58:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:15,182 INFO L93 Difference]: Finished difference Result 279 states and 345 transitions. [2020-08-21 17:58:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:58:15,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-08-21 17:58:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:15,185 INFO L225 Difference]: With dead ends: 279 [2020-08-21 17:58:15,185 INFO L226 Difference]: Without dead ends: 137 [2020-08-21 17:58:15,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:58:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-21 17:58:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-21 17:58:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 17:58:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-21 17:58:15,239 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73 [2020-08-21 17:58:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:15,239 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-21 17:58:15,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:58:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-21 17:58:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 17:58:15,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:15,241 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] [2020-08-21 17:58:15,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:58:15,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:15,241 INFO L82 PathProgramCache]: Analyzing trace with hash -760855184, now seen corresponding path program 1 times [2020-08-21 17:58:15,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:15,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135115140] [2020-08-21 17:58:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:58:15,307 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:58:15,307 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:58:15,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:58:15,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:58:15 BoogieIcfgContainer [2020-08-21 17:58:15,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:58:15,337 INFO L168 Benchmark]: Toolchain (without parser) took 12792.05 ms. Allocated memory was 141.0 MB in the beginning and 451.4 MB in the end (delta: 310.4 MB). Free memory was 102.0 MB in the beginning and 401.7 MB in the end (delta: -299.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:58:15,337 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:58:15,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.91 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 175.4 MB in the end (delta: -73.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:58:15,339 INFO L168 Benchmark]: Boogie Preprocessor took 88.89 ms. Allocated memory is still 204.5 MB. Free memory was 175.4 MB in the beginning and 170.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:58:15,340 INFO L168 Benchmark]: RCFGBuilder took 1260.94 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 170.8 MB in the beginning and 201.2 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:58:15,341 INFO L168 Benchmark]: TraceAbstraction took 10747.03 ms. Allocated memory was 235.9 MB in the beginning and 451.4 MB in the end (delta: 215.5 MB). Free memory was 201.2 MB in the beginning and 401.7 MB in the end (delta: -200.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:58:15,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.91 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 175.4 MB in the end (delta: -73.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.89 ms. Allocated memory is still 204.5 MB. Free memory was 175.4 MB in the beginning and 170.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1260.94 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 170.8 MB in the beginning and 201.2 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10747.03 ms. Allocated memory was 235.9 MB in the beginning and 451.4 MB in the end (delta: 215.5 MB). Free memory was 201.2 MB in the beginning and 401.7 MB in the end (delta: -200.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L95] int pumpRunning = 0; [L96] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L562] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; [L370] int retValue_acc ; [L371] int tmp ; [L375] FCALL select_helpers() [L376] FCALL select_features() [L377] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L377] RET, EXPR valid_product() [L377] tmp = valid_product() [L379] COND TRUE \read(tmp) [L381] FCALL setup() [L382] CALL runTest() [L364] CALL test() [L233] int splverifierCounter ; [L234] int tmp ; [L235] int tmp___0 ; [L236] int tmp___1 ; [L237] int tmp___2 ; [L240] splverifierCounter = 0 [L242] COND TRUE 1 [L244] COND TRUE splverifierCounter < 4 [L250] tmp = __VERIFIER_nondet_int() [L252] COND TRUE \read(tmp) [L254] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L254] RET waterRise() [L260] tmp___0 = __VERIFIER_nondet_int() [L262] COND FALSE !(\read(tmp___0)) [L270] tmp___2 = __VERIFIER_nondet_int() [L272] COND TRUE \read(tmp___2) [L285] CALL timeShift() [L103] COND FALSE !(\read(pumpRunning)) [L110] COND TRUE \read(systemActive) [L112] CALL processEnvironment() [L132] int tmp ; [L135] COND FALSE !(\read(pumpRunning)) [L150] FCALL processEnvironment__wrappee__base() [L112] RET processEnvironment() [L118] CALL __utac_acc__Specification3_spec__1() [L841] int tmp ; [L842] int tmp___0 ; [L843] int tmp___1 ; [L847] CALL, EXPR isMethaneLevelCritical() [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); [L847] RET, EXPR isMethaneLevelCritical() [L847] tmp = isMethaneLevelCritical() [L849] COND FALSE !(\read(tmp)) [L853] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L853] RET, EXPR getWaterLevel() [L853] tmp___0 = getWaterLevel() [L855] COND TRUE tmp___0 == 2 [L857] CALL, EXPR isPumpRunning() [L184] int retValue_acc ; [L187] retValue_acc = pumpRunning [L188] return (retValue_acc); [L857] RET, EXPR isPumpRunning() [L857] tmp___1 = isPumpRunning() [L859] COND FALSE !(\read(tmp___1)) [L863] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 430 SDtfs, 689 SDslu, 232 SDs, 0 SdLazy, 1249 SolverSat, 421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 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...