/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:56:38,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:56:38,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:56:38,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:56:38,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:56:38,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:56:38,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:56:38,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:56:38,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:56:38,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:56:38,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:56:38,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:56:38,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:56:38,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:56:38,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:56:38,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:56:38,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:56:38,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:56:38,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:56:38,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:56:38,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:56:38,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:56:38,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:56:38,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:56:38,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:56:38,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:56:38,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:56:38,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:56:38,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:56:38,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:56:38,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:56:38,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:56:38,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:56:38,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:56:38,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:56:38,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:56:38,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:56:38,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:56:38,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:56:38,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:56:38,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:56:38,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 17:56:38,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:56:38,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:56:38,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:56:38,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:56:38,958 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:56:38,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:56:38,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:56:38,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:56:38,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:56:38,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:56:38,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:56:38,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:56:38,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:56:38,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:56:38,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:56:38,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:56:38,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:56:38,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:56:38,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:56:38,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:56:38,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:56:38,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:56:38,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:56:38,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:56:38,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:56:38,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:56:38,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:56:38,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:56:38,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:56:38,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:56:39,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:56:39,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:56:39,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:56:39,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:56:39,268 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:56:39,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-21 17:56:39,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f07cea781/b9e27d5ac57a40b19543feeda0deef6c/FLAG57db53169 [2020-08-21 17:56:39,871 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:56:39,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-21 17:56:39,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f07cea781/b9e27d5ac57a40b19543feeda0deef6c/FLAG57db53169 [2020-08-21 17:56:40,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f07cea781/b9e27d5ac57a40b19543feeda0deef6c [2020-08-21 17:56:40,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:56:40,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:56:40,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:56:40,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:56:40,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:56:40,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40, skipping insertion in model container [2020-08-21 17:56:40,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:56:40,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:56:40,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:56:40,647 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:56:40,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:56:40,776 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:56:40,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40 WrapperNode [2020-08-21 17:56:40,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:56:40,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:56:40,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:56:40,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:56:40,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... [2020-08-21 17:56:40,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:56:40,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:56:40,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:56:40,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:56:40,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:56:40,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:56:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:56:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:56:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:56:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:56:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:56:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:56:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:56:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:56:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:56:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:56:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:56:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:56:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:56:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:56:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:56:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:56:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:56:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:56:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:56:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:56:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:56:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:56:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:56:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:56:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:56:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:56:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:56:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:56:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:56:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:56:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:56:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:56:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:56:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:56:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:56:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:56:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:56:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:56:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:56:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:56:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:56:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:56:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:56:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:56:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:56:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:56:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:56:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:56:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:56:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:56:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:56:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:56:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:56:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:56:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:56:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:56:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:56:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:56:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:56:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:56:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:56:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:56:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:56:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:56:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:56:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:56:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:56:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:56:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:56:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:56:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:56:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:56:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:56:42,063 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:56:42,064 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:56:42,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:56:42 BoogieIcfgContainer [2020-08-21 17:56:42,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:56:42,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:56:42,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:56:42,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:56:42,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:56:40" (1/3) ... [2020-08-21 17:56:42,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ae621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:56:42, skipping insertion in model container [2020-08-21 17:56:42,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:56:40" (2/3) ... [2020-08-21 17:56:42,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ae621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:56:42, skipping insertion in model container [2020-08-21 17:56:42,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:56:42" (3/3) ... [2020-08-21 17:56:42,085 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-08-21 17:56:42,095 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:56:42,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:56:42,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:56:42,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:56:42,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:56:42,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:56:42,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:56:42,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:56:42,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:56:42,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:56:42,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:56:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-21 17:56:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:56:42,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:42,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:42,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:42,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:42,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1720198034, now seen corresponding path program 1 times [2020-08-21 17:56:42,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:42,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595910601] [2020-08-21 17:56:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,861 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:56:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:56:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:42,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595910601] [2020-08-21 17:56:42,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:42,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:56:42,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285141932] [2020-08-21 17:56:42,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:56:42,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:56:43,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:56:43,007 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-08-21 17:56:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:56:44,049 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2020-08-21 17:56:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:56:44,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 17:56:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:56:44,067 INFO L225 Difference]: With dead ends: 258 [2020-08-21 17:56:44,067 INFO L226 Difference]: Without dead ends: 145 [2020-08-21 17:56:44,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:56:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-21 17:56:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-21 17:56:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 17:56:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-21 17:56:44,169 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2020-08-21 17:56:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:56:44,169 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-21 17:56:44,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:56:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-21 17:56:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:56:44,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:44,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:44,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:56:44,175 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash 220132220, now seen corresponding path program 1 times [2020-08-21 17:56:44,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:44,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239849853] [2020-08-21 17:56:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,599 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:56:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:56:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:44,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239849853] [2020-08-21 17:56:44,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:44,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:56:44,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101154790] [2020-08-21 17:56:44,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:56:44,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:44,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:56:44,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:56:44,674 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 5 states. [2020-08-21 17:56:45,098 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:56:45,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:56:45,856 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2020-08-21 17:56:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:56:45,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 17:56:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:56:45,865 INFO L225 Difference]: With dead ends: 199 [2020-08-21 17:56:45,865 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 17:56:45,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:56:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 17:56:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 17:56:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 17:56:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-21 17:56:45,920 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2020-08-21 17:56:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:56:45,920 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-21 17:56:45,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:56:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-21 17:56:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 17:56:45,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:45,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:45,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:56:45,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash 889380391, now seen corresponding path program 1 times [2020-08-21 17:56:45,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:45,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871902972] [2020-08-21 17:56:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,278 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:46,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:56:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:56:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:46,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871902972] [2020-08-21 17:56:46,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:46,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:56:46,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339392795] [2020-08-21 17:56:46,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:56:46,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:56:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:56:46,387 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 9 states. [2020-08-21 17:56:46,722 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:56:47,025 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:47,284 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:47,531 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:56:48,517 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2020-08-21 17:56:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:56:48,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 17:56:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:56:48,527 INFO L225 Difference]: With dead ends: 212 [2020-08-21 17:56:48,527 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 17:56:48,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:56:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 17:56:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 17:56:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 17:56:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-21 17:56:48,558 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2020-08-21 17:56:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:56:48,558 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-21 17:56:48,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:56:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-21 17:56:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 17:56:48,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:48,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:48,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:56:48,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:48,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1390934310, now seen corresponding path program 1 times [2020-08-21 17:56:48,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:48,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702783043] [2020-08-21 17:56:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,864 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:56:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:56:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:56:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:56:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:48,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702783043] [2020-08-21 17:56:48,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:48,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:56:48,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262284975] [2020-08-21 17:56:48,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:56:48,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:48,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:56:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:56:48,966 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2020-08-21 17:56:49,264 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:56:50,422 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:56:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:56:50,957 INFO L93 Difference]: Finished difference Result 302 states and 382 transitions. [2020-08-21 17:56:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:56:50,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-21 17:56:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:56:50,963 INFO L225 Difference]: With dead ends: 302 [2020-08-21 17:56:50,963 INFO L226 Difference]: Without dead ends: 225 [2020-08-21 17:56:50,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:56:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-21 17:56:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2020-08-21 17:56:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-21 17:56:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2020-08-21 17:56:51,011 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 65 [2020-08-21 17:56:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:56:51,012 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2020-08-21 17:56:51,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:56:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2020-08-21 17:56:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:56:51,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:51,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:51,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:56:51,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1075030192, now seen corresponding path program 1 times [2020-08-21 17:56:51,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:51,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734073495] [2020-08-21 17:56:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,304 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:56:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:56:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:56:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:56:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:56:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:56:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:51,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734073495] [2020-08-21 17:56:51,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:51,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:56:51,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150784597] [2020-08-21 17:56:51,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:56:51,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:56:51,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:56:51,466 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 12 states. [2020-08-21 17:56:51,957 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:56:52,229 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:56:52,473 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:56:53,202 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:56:53,472 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:56:53,738 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:54,002 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:56:54,782 INFO L93 Difference]: Finished difference Result 372 states and 462 transitions. [2020-08-21 17:56:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:56:54,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 17:56:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:56:54,785 INFO L225 Difference]: With dead ends: 372 [2020-08-21 17:56:54,785 INFO L226 Difference]: Without dead ends: 224 [2020-08-21 17:56:54,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:56:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-21 17:56:54,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 181. [2020-08-21 17:56:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-21 17:56:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-08-21 17:56:54,838 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 79 [2020-08-21 17:56:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:56:54,838 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-08-21 17:56:54,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:56:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-08-21 17:56:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:56:54,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:54,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:54,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:56:54,840 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:54,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1584503282, now seen corresponding path program 1 times [2020-08-21 17:56:54,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:54,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086462681] [2020-08-21 17:56:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,157 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:56:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:56:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:56:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:56:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:56:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:56:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:55,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086462681] [2020-08-21 17:56:55,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:55,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:56:55,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014322962] [2020-08-21 17:56:55,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:56:55,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:55,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:56:55,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:56:55,295 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 9 states. [2020-08-21 17:56:55,620 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:56:56,815 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:57,100 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:57,348 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:56:57,578 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:56:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:56:58,438 INFO L93 Difference]: Finished difference Result 539 states and 685 transitions. [2020-08-21 17:56:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 17:56:58,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 17:56:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:56:58,442 INFO L225 Difference]: With dead ends: 539 [2020-08-21 17:56:58,442 INFO L226 Difference]: Without dead ends: 386 [2020-08-21 17:56:58,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 17:56:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-08-21 17:56:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 310. [2020-08-21 17:56:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-21 17:56:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 356 transitions. [2020-08-21 17:56:58,520 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 356 transitions. Word has length 79 [2020-08-21 17:56:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:56:58,521 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 356 transitions. [2020-08-21 17:56:58,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:56:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 356 transitions. [2020-08-21 17:56:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 17:56:58,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:56:58,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:56:58,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:56:58,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:56:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:56:58,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1898506966, now seen corresponding path program 1 times [2020-08-21 17:56:58,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:56:58,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799078358] [2020-08-21 17:56:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:56:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,859 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:56:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:56:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:56:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:56:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:56:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:56:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:56:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:56:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:56:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:56:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:56:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:56:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 17:56:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 17:56:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:56:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:56:59,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799078358] [2020-08-21 17:56:59,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:56:59,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:56:59,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287903586] [2020-08-21 17:56:59,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:56:59,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:56:59,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:56:59,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:56:59,020 INFO L87 Difference]: Start difference. First operand 310 states and 356 transitions. Second operand 10 states. [2020-08-21 17:56:59,406 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:00,583 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:00,815 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:01,082 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:01,356 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:02,337 INFO L93 Difference]: Finished difference Result 706 states and 881 transitions. [2020-08-21 17:57:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:57:02,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-21 17:57:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:02,342 INFO L225 Difference]: With dead ends: 706 [2020-08-21 17:57:02,342 INFO L226 Difference]: Without dead ends: 424 [2020-08-21 17:57:02,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-21 17:57:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-21 17:57:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 309. [2020-08-21 17:57:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-21 17:57:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 353 transitions. [2020-08-21 17:57:02,406 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 353 transitions. Word has length 83 [2020-08-21 17:57:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:02,406 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 353 transitions. [2020-08-21 17:57:02,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:57:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 353 transitions. [2020-08-21 17:57:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:57:02,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:02,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:02,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:57:02,408 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -226819900, now seen corresponding path program 1 times [2020-08-21 17:57:02,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:02,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427499920] [2020-08-21 17:57:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,684 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:02,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:57:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:57:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:02,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427499920] [2020-08-21 17:57:02,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:02,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:57:02,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248284420] [2020-08-21 17:57:02,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:57:02,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:02,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:57:02,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:57:02,817 INFO L87 Difference]: Start difference. First operand 309 states and 353 transitions. Second operand 12 states. [2020-08-21 17:57:03,277 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:03,513 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:03,737 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:04,571 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:04,818 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:05,061 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:05,900 INFO L93 Difference]: Finished difference Result 713 states and 897 transitions. [2020-08-21 17:57:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:57:05,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 17:57:05,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:05,904 INFO L225 Difference]: With dead ends: 713 [2020-08-21 17:57:05,904 INFO L226 Difference]: Without dead ends: 432 [2020-08-21 17:57:05,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:57:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-08-21 17:57:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2020-08-21 17:57:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-21 17:57:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 361 transitions. [2020-08-21 17:57:05,995 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 361 transitions. Word has length 84 [2020-08-21 17:57:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:05,995 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 361 transitions. [2020-08-21 17:57:05,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:57:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 361 transitions. [2020-08-21 17:57:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:57:05,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:05,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:05,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:57:05,997 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:05,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1613023294, now seen corresponding path program 1 times [2020-08-21 17:57:05,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:05,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177995836] [2020-08-21 17:57:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,265 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:06,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:57:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:57:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:06,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177995836] [2020-08-21 17:57:06,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:06,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:57:06,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947196779] [2020-08-21 17:57:06,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:57:06,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:06,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:57:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:57:06,398 INFO L87 Difference]: Start difference. First operand 317 states and 361 transitions. Second operand 10 states. [2020-08-21 17:57:07,313 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:07,558 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:57:07,792 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:08,035 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:08,834 INFO L93 Difference]: Finished difference Result 715 states and 895 transitions. [2020-08-21 17:57:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:57:08,839 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-21 17:57:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:08,843 INFO L225 Difference]: With dead ends: 715 [2020-08-21 17:57:08,843 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 17:57:08,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:57:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 17:57:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 317. [2020-08-21 17:57:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-21 17:57:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2020-08-21 17:57:08,913 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 84 [2020-08-21 17:57:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:08,914 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2020-08-21 17:57:08,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:57:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2020-08-21 17:57:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:57:08,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:08,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:08,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:57:08,918 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:08,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:08,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1884470469, now seen corresponding path program 1 times [2020-08-21 17:57:08,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:08,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962950706] [2020-08-21 17:57:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,203 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:57:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:57:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:09,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962950706] [2020-08-21 17:57:09,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:09,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:57:09,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423719472] [2020-08-21 17:57:09,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:57:09,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:09,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:57:09,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:57:09,330 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand 8 states. [2020-08-21 17:57:09,687 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:10,259 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:12,326 INFO L93 Difference]: Finished difference Result 1041 states and 1362 transitions. [2020-08-21 17:57:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:57:12,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 17:57:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:12,334 INFO L225 Difference]: With dead ends: 1041 [2020-08-21 17:57:12,334 INFO L226 Difference]: Without dead ends: 752 [2020-08-21 17:57:12,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-21 17:57:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-08-21 17:57:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 607. [2020-08-21 17:57:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-21 17:57:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 711 transitions. [2020-08-21 17:57:12,473 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 711 transitions. Word has length 84 [2020-08-21 17:57:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:12,474 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 711 transitions. [2020-08-21 17:57:12,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:57:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 711 transitions. [2020-08-21 17:57:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 17:57:12,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:12,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:12,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:57:12,481 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:12,481 INFO L82 PathProgramCache]: Analyzing trace with hash 713728159, now seen corresponding path program 1 times [2020-08-21 17:57:12,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:12,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77527244] [2020-08-21 17:57:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,732 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:57:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:57:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:57:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:57:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:57:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:12,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77527244] [2020-08-21 17:57:12,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:12,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:57:12,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549357696] [2020-08-21 17:57:12,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:57:12,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:57:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:57:12,859 INFO L87 Difference]: Start difference. First operand 607 states and 711 transitions. Second operand 8 states. [2020-08-21 17:57:13,275 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:15,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:15,399 INFO L93 Difference]: Finished difference Result 1199 states and 1560 transitions. [2020-08-21 17:57:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:57:15,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-21 17:57:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:15,409 INFO L225 Difference]: With dead ends: 1199 [2020-08-21 17:57:15,409 INFO L226 Difference]: Without dead ends: 1196 [2020-08-21 17:57:15,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 17:57:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-08-21 17:57:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 975. [2020-08-21 17:57:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-08-21 17:57:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1150 transitions. [2020-08-21 17:57:15,713 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1150 transitions. Word has length 88 [2020-08-21 17:57:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:15,713 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1150 transitions. [2020-08-21 17:57:15,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:57:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1150 transitions. [2020-08-21 17:57:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 17:57:15,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:15,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:15,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:57:15,725 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1128183326, now seen corresponding path program 1 times [2020-08-21 17:57:15,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:15,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476767990] [2020-08-21 17:57:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:57:15,816 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:57:15,816 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:57:15,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:57:15,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:57:15 BoogieIcfgContainer [2020-08-21 17:57:15,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:57:15,892 INFO L168 Benchmark]: Toolchain (without parser) took 35723.28 ms. Allocated memory was 139.5 MB in the beginning and 633.3 MB in the end (delta: 493.9 MB). Free memory was 101.3 MB in the beginning and 240.9 MB in the end (delta: -139.7 MB). Peak memory consumption was 354.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:57:15,898 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:57:15,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.89 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 171.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:57:15,900 INFO L168 Benchmark]: Boogie Preprocessor took 98.60 ms. Allocated memory is still 202.4 MB. Free memory was 171.1 MB in the beginning and 166.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:57:15,900 INFO L168 Benchmark]: RCFGBuilder took 1197.01 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.0 MB in the beginning and 197.4 MB in the end (delta: -31.4 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:57:15,901 INFO L168 Benchmark]: TraceAbstraction took 33809.93 ms. Allocated memory was 235.4 MB in the beginning and 633.3 MB in the end (delta: 397.9 MB). Free memory was 195.9 MB in the beginning and 240.9 MB in the end (delta: -45.0 MB). Peak memory consumption was 352.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:57:15,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.89 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 171.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.60 ms. Allocated memory is still 202.4 MB. Free memory was 171.1 MB in the beginning and 166.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1197.01 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.0 MB in the beginning and 197.4 MB in the end (delta: -31.4 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33809.93 ms. Allocated memory was 235.4 MB in the beginning and 633.3 MB in the end (delta: 397.9 MB). Free memory was 195.9 MB in the beginning and 240.9 MB in the end (delta: -45.0 MB). Peak memory consumption was 352.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.6s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 27.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1107 SDtfs, 3134 SDslu, 1477 SDs, 0 SdLazy, 6139 SolverSat, 2319 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=975occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 964 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 249077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...