/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:12:21,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:12:21,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:12:21,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:12:21,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:12:21,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:12:21,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:12:21,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:12:21,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:12:21,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:12:21,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:12:21,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:12:21,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:12:21,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:12:21,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:12:21,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:12:21,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:12:21,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:12:21,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:12:21,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:12:21,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:12:21,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:12:21,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:12:21,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:12:21,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:12:21,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:12:21,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:12:21,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:12:21,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:12:21,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:12:21,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:12:21,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:12:21,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:12:21,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:12:21,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:12:21,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:12:21,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:12:21,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:12:21,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:12:21,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:12:21,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:12:21,911 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 [2020-09-21 12:12:21,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:12:21,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:12:21,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:12:21,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:12:21,973 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:12:21,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:12:21,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:12:21,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:12:21,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:12:21,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:12:21,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:12:21,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:12:21,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:12:21,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:12:21,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:12:21,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:12:21,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:12:21,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:12:21,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:12:21,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:12:21,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:12:21,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:12:21,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:12:21,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:12:21,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:12:21,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:12:21,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:12:21,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:12:21,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:12:21,980 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:12:22,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:12:22,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:12:22,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:12:22,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:12:22,497 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:12:22,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-21 12:12:22,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bed75257/1f5c647ef89b4dd2919e829378050eb1/FLAGf25c7116b [2020-09-21 12:12:23,173 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:12:23,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-21 12:12:23,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bed75257/1f5c647ef89b4dd2919e829378050eb1/FLAGf25c7116b [2020-09-21 12:12:23,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bed75257/1f5c647ef89b4dd2919e829378050eb1 [2020-09-21 12:12:23,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:12:23,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:12:23,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:12:23,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:12:23,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:12:23,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:12:23" (1/1) ... [2020-09-21 12:12:23,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:23, skipping insertion in model container [2020-09-21 12:12:23,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:12:23" (1/1) ... [2020-09-21 12:12:23,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:12:23,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:12:24,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:12:24,071 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:12:24,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:12:24,289 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:12:24,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24 WrapperNode [2020-09-21 12:12:24,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:12:24,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:12:24,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:12:24,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:12:24,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (1/1) ... [2020-09-21 12:12:24,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:12:24,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:12:24,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:12:24,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:12:24,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (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 [2020-09-21 12:12:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:12:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:12:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:12:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:12:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:12:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:12:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:12:24,481 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:12:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:12:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:12:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:12:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:12:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:12:24,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:12:24,483 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:12:24,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:12:24,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:12:24,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:12:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:12:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:12:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:12:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:12:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:12:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:12:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:12:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:12:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:12:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:12:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:12:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:12:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:12:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:12:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:12:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:12:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:12:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:12:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:12:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:12:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:12:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:12:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:12:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:12:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:12:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:12:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:12:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:12:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:12:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:12:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:12:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:12:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:12:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:12:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:12:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:12:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:12:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:12:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:12:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:12:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:12:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:12:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:12:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:12:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:12:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:12:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:12:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:12:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:12:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:12:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:12:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:12:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:12:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:12:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:12:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:12:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:12:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:12:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:12:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:12:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:12:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:12:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:12:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:12:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:12:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:12:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:12:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:12:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:12:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:12:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:12:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:12:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:12:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:12:25,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:12:25,588 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:12:25,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:12:25 BoogieIcfgContainer [2020-09-21 12:12:25,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:12:25,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:12:25,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:12:25,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:12:25,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:12:23" (1/3) ... [2020-09-21 12:12:25,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4a6cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:12:25, skipping insertion in model container [2020-09-21 12:12:25,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:24" (2/3) ... [2020-09-21 12:12:25,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4a6cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:12:25, skipping insertion in model container [2020-09-21 12:12:25,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:12:25" (3/3) ... [2020-09-21 12:12:25,604 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-09-21 12:12:25,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:12:25,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:12:25,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:12:25,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:12:25,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:12:25,682 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:12:25,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:12:25,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:12:25,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:12:25,682 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:12:25,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:12:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-09-21 12:12:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:12:25,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:25,725 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] [2020-09-21 12:12:25,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash -899623382, now seen corresponding path program 1 times [2020-09-21 12:12:25,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:25,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656048638] [2020-09-21 12:12:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:12:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-21 12:12:27,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:12:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:12:27,543 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:27,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:12:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:27,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:27,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:27,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:12:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:27,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:12:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:27,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:27,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:12:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:27,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:12:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:27,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:27,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:27,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:27,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656048638] [2020-09-21 12:12:27,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:27,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:12:27,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973621465] [2020-09-21 12:12:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:12:27,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:12:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:12:27,785 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-09-21 12:12:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:29,063 INFO L93 Difference]: Finished difference Result 313 states and 411 transitions. [2020-09-21 12:12:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:12:29,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 12:12:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:29,085 INFO L225 Difference]: With dead ends: 313 [2020-09-21 12:12:29,085 INFO L226 Difference]: Without dead ends: 169 [2020-09-21 12:12:29,091 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 [2020-09-21 12:12:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-21 12:12:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-09-21 12:12:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-21 12:12:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-09-21 12:12:29,198 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-09-21 12:12:29,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:29,198 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-09-21 12:12:29,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:12:29,199 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-09-21 12:12:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:12:29,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:29,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:12:29,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:12:29,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:29,209 INFO L82 PathProgramCache]: Analyzing trace with hash 345033864, now seen corresponding path program 1 times [2020-09-21 12:12:29,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:29,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925197611] [2020-09-21 12:12:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:12:30,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:12:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:12:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:12:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:30,784 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:30,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:12:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:30,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:30,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:30,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:12:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:30,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:30,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:12:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:12:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:30,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:30,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:30,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:30,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:30,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:30,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925197611] [2020-09-21 12:12:30,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:30,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:12:30,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55188972] [2020-09-21 12:12:30,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:12:30,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:12:30,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:12:30,944 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-09-21 12:12:31,403 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:12:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:32,338 INFO L93 Difference]: Finished difference Result 240 states and 294 transitions. [2020-09-21 12:12:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:12:32,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 12:12:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:32,343 INFO L225 Difference]: With dead ends: 240 [2020-09-21 12:12:32,343 INFO L226 Difference]: Without dead ends: 153 [2020-09-21 12:12:32,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:12:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-21 12:12:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 126. [2020-09-21 12:12:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-21 12:12:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-09-21 12:12:32,386 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-09-21 12:12:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:32,387 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-09-21 12:12:32,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:12:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-09-21 12:12:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:12:32,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:32,390 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] [2020-09-21 12:12:32,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:12:32,390 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1653234581, now seen corresponding path program 1 times [2020-09-21 12:12:32,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:32,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166213199] [2020-09-21 12:12:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:33,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:33,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:12:33,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-09-21 12:12:33,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:12:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:12:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:33,812 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:33,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:33,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-21 12:12:33,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:34,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:34,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:12:34,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:34,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:12:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:34,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:12:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:34,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:34,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:12:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:34,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:34,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:34,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:34,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:34,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:12:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:34,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166213199] [2020-09-21 12:12:34,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:34,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:12:34,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649635531] [2020-09-21 12:12:34,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:12:34,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:12:34,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:12:34,144 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 4 states. [2020-09-21 12:12:34,528 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:36,164 INFO L93 Difference]: Finished difference Result 369 states and 458 transitions. [2020-09-21 12:12:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:12:36,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-21 12:12:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:36,169 INFO L225 Difference]: With dead ends: 369 [2020-09-21 12:12:36,170 INFO L226 Difference]: Without dead ends: 267 [2020-09-21 12:12:36,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:12:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-21 12:12:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 222. [2020-09-21 12:12:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-21 12:12:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 267 transitions. [2020-09-21 12:12:36,248 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 267 transitions. Word has length 57 [2020-09-21 12:12:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:36,249 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 267 transitions. [2020-09-21 12:12:36,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:12:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 267 transitions. [2020-09-21 12:12:36,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 12:12:36,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:36,253 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] [2020-09-21 12:12:36,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:12:36,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash -55334840, now seen corresponding path program 1 times [2020-09-21 12:12:36,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:36,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763878799] [2020-09-21 12:12:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:12:37,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:12:37,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:12:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:12:37,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,692 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:37,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:12:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:37,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:37,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:37,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:37,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:12:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:12:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:12:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:12:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:37,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:37,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:12:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:12:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:12:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 12:12:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:37,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:37,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:38,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763878799] [2020-09-21 12:12:38,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:38,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:12:38,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573537750] [2020-09-21 12:12:38,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:12:38,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:38,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:12:38,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:12:38,002 INFO L87 Difference]: Start difference. First operand 222 states and 267 transitions. Second operand 9 states. [2020-09-21 12:12:38,523 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:39,478 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:12:41,092 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188 [2020-09-21 12:12:41,585 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:12:41,945 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:12:42,275 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:12:42,625 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 12:12:43,120 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:12:43,464 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:12:43,783 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:12:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:45,457 INFO L93 Difference]: Finished difference Result 919 states and 1258 transitions. [2020-09-21 12:12:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:12:45,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-21 12:12:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:45,472 INFO L225 Difference]: With dead ends: 919 [2020-09-21 12:12:45,472 INFO L226 Difference]: Without dead ends: 721 [2020-09-21 12:12:45,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:12:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-09-21 12:12:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 624. [2020-09-21 12:12:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-09-21 12:12:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 793 transitions. [2020-09-21 12:12:45,610 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 793 transitions. Word has length 63 [2020-09-21 12:12:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:45,611 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 793 transitions. [2020-09-21 12:12:45,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:12:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 793 transitions. [2020-09-21 12:12:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:12:45,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:45,617 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] [2020-09-21 12:12:45,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:12:45,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1597316302, now seen corresponding path program 1 times [2020-09-21 12:12:45,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:45,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974731784] [2020-09-21 12:12:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:12:45,680 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:12:45,680 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:12:45,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:12:45,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:12:45 BoogieIcfgContainer [2020-09-21 12:12:45,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:12:45,715 INFO L168 Benchmark]: Toolchain (without parser) took 22264.31 ms. Allocated memory was 137.4 MB in the beginning and 580.9 MB in the end (delta: 443.5 MB). Free memory was 100.0 MB in the beginning and 389.0 MB in the end (delta: -289.1 MB). Peak memory consumption was 154.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:45,716 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:12:45,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.23 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.3 MB in the beginning and 169.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:45,718 INFO L168 Benchmark]: Boogie Preprocessor took 94.83 ms. Allocated memory is still 200.8 MB. Free memory was 169.3 MB in the beginning and 165.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:45,719 INFO L168 Benchmark]: RCFGBuilder took 1209.04 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 165.0 MB in the beginning and 194.6 MB in the end (delta: -29.6 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:45,720 INFO L168 Benchmark]: TraceAbstraction took 20117.40 ms. Allocated memory was 229.6 MB in the beginning and 580.9 MB in the end (delta: 351.3 MB). Free memory was 194.6 MB in the beginning and 389.0 MB in the end (delta: -194.4 MB). Peak memory consumption was 156.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:45,724 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 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.23 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.3 MB in the beginning and 169.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.83 ms. Allocated memory is still 200.8 MB. Free memory was 169.3 MB in the beginning and 165.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1209.04 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 165.0 MB in the beginning and 194.6 MB in the end (delta: -29.6 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20117.40 ms. Allocated memory was 229.6 MB in the beginning and 580.9 MB in the end (delta: 351.3 MB). Free memory was 194.6 MB in the beginning and 389.0 MB in the end (delta: -194.4 MB). Peak memory consumption was 156.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 522 SDtfs, 762 SDslu, 346 SDs, 0 SdLazy, 1835 SolverSat, 446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=624occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 203 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 64304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...