/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:54:34,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:54:34,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:54:34,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:54:34,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:54:34,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:54:34,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:54:34,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:54:34,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:54:34,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:54:34,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:54:34,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:54:34,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:54:34,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:54:34,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:54:34,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:54:34,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:54:34,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:54:34,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:54:34,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:54:34,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:54:34,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:54:34,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:54:34,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:54:34,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:54:34,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:54:34,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:54:34,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:54:34,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:54:34,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:54:34,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:54:34,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:54:34,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:54:34,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:54:34,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:54:34,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:54:34,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:54:34,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:54:34,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:54:34,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:54:34,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:54:34,959 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 [2020-08-22 02:54:34,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:54:34,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:54:34,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:54:34,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:54:34,998 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:54:34,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:54:34,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:54:34,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:54:34,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:54:34,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:54:35,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:54:35,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:54:35,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:54:35,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:54:35,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:54:35,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:54:35,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:54:35,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:54:35,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:54:35,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:54:35,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:54:35,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:54:35,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:54:35,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:54:35,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:54:35,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:54:35,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:54:35,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:54:35,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:54:35,004 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:54:35,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:54:35,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:54:35,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:54:35,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:54:35,299 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:54:35,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-08-22 02:54:35,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a5bd9ba/780aec54e94746ddba6bcb25882ed60c/FLAGd0bfc90d3 [2020-08-22 02:54:35,880 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:54:35,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-08-22 02:54:35,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a5bd9ba/780aec54e94746ddba6bcb25882ed60c/FLAGd0bfc90d3 [2020-08-22 02:54:36,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a5bd9ba/780aec54e94746ddba6bcb25882ed60c [2020-08-22 02:54:36,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:54:36,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:54:36,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:54:36,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:54:36,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:54:36,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76162525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36, skipping insertion in model container [2020-08-22 02:54:36,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:54:36,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:54:36,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:54:36,583 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:54:36,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:54:36,796 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:54:36,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36 WrapperNode [2020-08-22 02:54:36,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:54:36,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:54:36,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:54:36,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:54:36,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (1/1) ... [2020-08-22 02:54:36,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:54:36,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:54:36,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:54:36,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:54:36,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (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 [2020-08-22 02:54:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:54:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:54:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:54:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:54:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:54:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:54:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:54:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:54:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:54:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:54:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:54:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:54:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:54:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:54:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:54:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:54:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:54:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:54:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:54:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:54:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:54:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:54:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:54:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:54:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:54:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:54:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:54:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:54:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:54:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:54:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:54:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:54:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:54:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:54:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:54:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:54:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:54:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:54:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:54:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:54:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:54:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:54:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:54:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:54:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:54:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:54:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:54:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:54:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:54:38,065 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:54:38,065 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:54:38,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:54:38 BoogieIcfgContainer [2020-08-22 02:54:38,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:54:38,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:54:38,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:54:38,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:54:38,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:54:36" (1/3) ... [2020-08-22 02:54:38,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb65e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:54:38, skipping insertion in model container [2020-08-22 02:54:38,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:54:36" (2/3) ... [2020-08-22 02:54:38,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb65e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:54:38, skipping insertion in model container [2020-08-22 02:54:38,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:54:38" (3/3) ... [2020-08-22 02:54:38,079 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-08-22 02:54:38,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:54:38,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:54:38,110 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:54:38,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:54:38,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:54:38,135 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:54:38,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:54:38,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:54:38,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:54:38,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:54:38,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:54:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-22 02:54:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:54:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:54:38,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:54:38,170 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:54:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:54:38,176 INFO L82 PathProgramCache]: Analyzing trace with hash -656044244, now seen corresponding path program 1 times [2020-08-22 02:54:38,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:54:38,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836336210] [2020-08-22 02:54:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:54:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,772 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:54:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:54:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:54:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:54:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:54:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:54:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:54:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:54:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:54:38,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836336210] [2020-08-22 02:54:38,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:54:38,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:54:38,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769276266] [2020-08-22 02:54:38,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:54:38,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:54:38,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:54:38,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:54:38,919 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-08-22 02:54:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:54:40,070 INFO L93 Difference]: Finished difference Result 316 states and 411 transitions. [2020-08-22 02:54:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:54:40,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:54:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:54:40,087 INFO L225 Difference]: With dead ends: 316 [2020-08-22 02:54:40,088 INFO L226 Difference]: Without dead ends: 171 [2020-08-22 02:54:40,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:54:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-22 02:54:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2020-08-22 02:54:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-22 02:54:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-08-22 02:54:40,233 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 46 [2020-08-22 02:54:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:54:40,234 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-08-22 02:54:40,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:54:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-08-22 02:54:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:54:40,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:54:40,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:54:40,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:54:40,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:54:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:54:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash 679222766, now seen corresponding path program 1 times [2020-08-22 02:54:40,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:54:40,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3257082] [2020-08-22 02:54:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:54:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,598 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:54:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:54:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:54:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:54:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:54:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:54:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:54:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:54:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:54:40,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3257082] [2020-08-22 02:54:40,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:54:40,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:54:40,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800729940] [2020-08-22 02:54:40,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:54:40,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:54:40,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:54:40,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:54:40,669 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 4 states. [2020-08-22 02:54:41,064 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:54:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:54:41,942 INFO L93 Difference]: Finished difference Result 239 states and 290 transitions. [2020-08-22 02:54:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:54:41,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:54:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:54:41,945 INFO L225 Difference]: With dead ends: 239 [2020-08-22 02:54:41,945 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 02:54:41,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:54:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 02:54:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2020-08-22 02:54:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-22 02:54:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-08-22 02:54:42,011 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 47 [2020-08-22 02:54:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:54:42,011 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-08-22 02:54:42,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:54:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-08-22 02:54:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:54:42,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:54:42,013 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] [2020-08-22 02:54:42,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:54:42,014 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:54:42,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:54:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash 496169114, now seen corresponding path program 1 times [2020-08-22 02:54:42,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:54:42,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570790120] [2020-08-22 02:54:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:54:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,389 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:54:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:54:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:54:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:54:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:54:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:54:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:54:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:54:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:54:42,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570790120] [2020-08-22 02:54:42,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:54:42,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:54:42,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012876735] [2020-08-22 02:54:42,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:54:42,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:54:42,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:54:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:54:42,501 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 8 states. [2020-08-22 02:54:42,845 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:54:43,177 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:43,444 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:43,688 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:44,463 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:54:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:54:46,373 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2020-08-22 02:54:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:54:46,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 02:54:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:54:46,379 INFO L225 Difference]: With dead ends: 436 [2020-08-22 02:54:46,380 INFO L226 Difference]: Without dead ends: 333 [2020-08-22 02:54:46,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:54:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-22 02:54:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-22 02:54:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 02:54:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 322 transitions. [2020-08-22 02:54:46,451 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 322 transitions. Word has length 52 [2020-08-22 02:54:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:54:46,451 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 322 transitions. [2020-08-22 02:54:46,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:54:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 322 transitions. [2020-08-22 02:54:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:54:46,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:54:46,453 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] [2020-08-22 02:54:46,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:54:46,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:54:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:54:46,454 INFO L82 PathProgramCache]: Analyzing trace with hash 987448314, now seen corresponding path program 1 times [2020-08-22 02:54:46,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:54:46,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859429682] [2020-08-22 02:54:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:54:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,756 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:54:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:54:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:54:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:54:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:54:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:54:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:54:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:54:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:54:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:54:46,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859429682] [2020-08-22 02:54:46,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:54:46,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:54:46,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703958468] [2020-08-22 02:54:46,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:54:46,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:54:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:54:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:54:46,902 INFO L87 Difference]: Start difference. First operand 268 states and 322 transitions. Second operand 12 states. [2020-08-22 02:54:47,405 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:54:47,782 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:48,038 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:48,284 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:48,851 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:54:49,619 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:49,992 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:54:50,305 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:54:50,632 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:54:50,957 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:54:51,383 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:54:51,692 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:54:51,966 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:54:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:54:53,897 INFO L93 Difference]: Finished difference Result 1085 states and 1492 transitions. [2020-08-22 02:54:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:54:53,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 02:54:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:54:53,906 INFO L225 Difference]: With dead ends: 1085 [2020-08-22 02:54:53,906 INFO L226 Difference]: Without dead ends: 841 [2020-08-22 02:54:53,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:54:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-08-22 02:54:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 744. [2020-08-22 02:54:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-22 02:54:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 944 transitions. [2020-08-22 02:54:54,097 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 944 transitions. Word has length 57 [2020-08-22 02:54:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:54:54,098 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 944 transitions. [2020-08-22 02:54:54,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:54:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 944 transitions. [2020-08-22 02:54:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 02:54:54,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:54:54,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:54:54,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:54:54,102 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:54:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:54:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1158385600, now seen corresponding path program 1 times [2020-08-22 02:54:54,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:54:54,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804895759] [2020-08-22 02:54:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:54:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,360 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:54:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:54:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:54:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:54:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:54:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:54:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:54:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:54:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:54:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:54:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:54:54,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804895759] [2020-08-22 02:54:54,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:54:54,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:54:54,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190373114] [2020-08-22 02:54:54,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:54:54,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:54:54,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:54:54,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:54:54,440 INFO L87 Difference]: Start difference. First operand 744 states and 944 transitions. Second operand 6 states. [2020-08-22 02:54:54,706 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:54:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:54:56,185 INFO L93 Difference]: Finished difference Result 1799 states and 2451 transitions. [2020-08-22 02:54:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:54:56,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 02:54:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:54:56,195 INFO L225 Difference]: With dead ends: 1799 [2020-08-22 02:54:56,196 INFO L226 Difference]: Without dead ends: 1079 [2020-08-22 02:54:56,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:54:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-08-22 02:54:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 988. [2020-08-22 02:54:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-08-22 02:54:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1244 transitions. [2020-08-22 02:54:56,456 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1244 transitions. Word has length 61 [2020-08-22 02:54:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:54:56,456 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1244 transitions. [2020-08-22 02:54:56,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:54:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1244 transitions. [2020-08-22 02:54:56,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:54:56,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:54:56,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:54:56,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:54:56,461 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:54:56,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:54:56,461 INFO L82 PathProgramCache]: Analyzing trace with hash -623744306, now seen corresponding path program 1 times [2020-08-22 02:54:56,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:54:56,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752352064] [2020-08-22 02:54:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:54:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,733 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:54:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:54:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:54:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:54:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:54:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:54:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:54:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:54:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:54:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:54:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:54:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:54:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:54:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 02:54:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:54:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 02:54:56,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752352064] [2020-08-22 02:54:56,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:54:56,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:54:56,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977146610] [2020-08-22 02:54:56,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:54:56,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:54:56,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:54:56,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:54:56,873 INFO L87 Difference]: Start difference. First operand 988 states and 1244 transitions. Second operand 10 states. [2020-08-22 02:54:57,450 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 02:54:58,070 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:54:59,956 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:55:01,750 INFO L93 Difference]: Finished difference Result 1921 states and 2525 transitions. [2020-08-22 02:55:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:55:01,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 02:55:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:55:01,762 INFO L225 Difference]: With dead ends: 1921 [2020-08-22 02:55:01,762 INFO L226 Difference]: Without dead ends: 1208 [2020-08-22 02:55:01,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 02:55:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-08-22 02:55:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1095. [2020-08-22 02:55:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-08-22 02:55:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1355 transitions. [2020-08-22 02:55:01,998 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1355 transitions. Word has length 89 [2020-08-22 02:55:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:55:02,000 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1355 transitions. [2020-08-22 02:55:02,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:55:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1355 transitions. [2020-08-22 02:55:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 02:55:02,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:55:02,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:55:02,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:55:02,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:55:02,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:55:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1382968030, now seen corresponding path program 1 times [2020-08-22 02:55:02,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:55:02,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576875383] [2020-08-22 02:55:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:55:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,313 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:55:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:55:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:55:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:55:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:55:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:55:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:55:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:55:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:55:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:55:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 02:55:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:55:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:55:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:55:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:55:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 02:55:02,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576875383] [2020-08-22 02:55:02,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:55:02,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:55:02,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502659885] [2020-08-22 02:55:02,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:55:02,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:55:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:55:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:55:02,569 INFO L87 Difference]: Start difference. First operand 1095 states and 1355 transitions. Second operand 12 states. [2020-08-22 02:55:03,734 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:03,962 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:04,207 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:04,892 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:05,166 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:05,444 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:55:06,629 INFO L93 Difference]: Finished difference Result 2280 states and 2962 transitions. [2020-08-22 02:55:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:55:06,630 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-22 02:55:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:55:06,638 INFO L225 Difference]: With dead ends: 2280 [2020-08-22 02:55:06,638 INFO L226 Difference]: Without dead ends: 1209 [2020-08-22 02:55:06,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:55:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-08-22 02:55:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1095. [2020-08-22 02:55:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-08-22 02:55:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1351 transitions. [2020-08-22 02:55:06,863 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1351 transitions. Word has length 132 [2020-08-22 02:55:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:55:06,864 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1351 transitions. [2020-08-22 02:55:06,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:55:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1351 transitions. [2020-08-22 02:55:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 02:55:06,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:55:06,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:55:06,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:55:06,868 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:55:06,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:55:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1689143082, now seen corresponding path program 1 times [2020-08-22 02:55:06,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:55:06,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449303373] [2020-08-22 02:55:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:55:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,165 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:55:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:55:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:55:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:55:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:55:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:55:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:55:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:55:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:55:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:55:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:55:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:55:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:55:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 02:55:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 02:55:07,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449303373] [2020-08-22 02:55:07,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:55:07,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:55:07,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206553815] [2020-08-22 02:55:07,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:55:07,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:55:07,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:55:07,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:55:07,426 INFO L87 Difference]: Start difference. First operand 1095 states and 1351 transitions. Second operand 10 states. [2020-08-22 02:55:08,487 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:08,725 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:55:08,978 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:09,196 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:55:09,985 INFO L93 Difference]: Finished difference Result 2085 states and 2647 transitions. [2020-08-22 02:55:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:55:09,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-22 02:55:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:55:09,996 INFO L225 Difference]: With dead ends: 2085 [2020-08-22 02:55:09,996 INFO L226 Difference]: Without dead ends: 1014 [2020-08-22 02:55:10,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:55:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-08-22 02:55:10,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 956. [2020-08-22 02:55:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-08-22 02:55:10,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1156 transitions. [2020-08-22 02:55:10,233 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1156 transitions. Word has length 128 [2020-08-22 02:55:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:55:10,233 INFO L479 AbstractCegarLoop]: Abstraction has 956 states and 1156 transitions. [2020-08-22 02:55:10,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:55:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1156 transitions. [2020-08-22 02:55:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 02:55:10,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:55:10,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:55:10,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:55:10,238 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:55:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:55:10,239 INFO L82 PathProgramCache]: Analyzing trace with hash -855657151, now seen corresponding path program 1 times [2020-08-22 02:55:10,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:55:10,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029480410] [2020-08-22 02:55:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:55:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,546 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:55:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:55:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:55:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:55:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:55:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:55:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:55:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:55:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:55:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:55:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 02:55:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:55:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:55:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:55:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:55:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 02:55:10,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029480410] [2020-08-22 02:55:10,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:55:10,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:55:10,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329512234] [2020-08-22 02:55:10,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:55:10,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:55:10,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:55:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:55:10,764 INFO L87 Difference]: Start difference. First operand 956 states and 1156 transitions. Second operand 13 states. [2020-08-22 02:55:11,137 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:11,814 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:14,030 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:14,294 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:14,534 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:14,777 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:15,026 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:15,263 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:15,526 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:15,758 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:16,014 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:16,241 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:55:16,970 INFO L93 Difference]: Finished difference Result 2764 states and 3470 transitions. [2020-08-22 02:55:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:55:16,971 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-22 02:55:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:55:16,982 INFO L225 Difference]: With dead ends: 2764 [2020-08-22 02:55:16,982 INFO L226 Difference]: Without dead ends: 1832 [2020-08-22 02:55:16,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 02:55:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-08-22 02:55:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1727. [2020-08-22 02:55:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-22 02:55:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2059 transitions. [2020-08-22 02:55:17,305 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2059 transitions. Word has length 132 [2020-08-22 02:55:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:55:17,307 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2059 transitions. [2020-08-22 02:55:17,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:55:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2059 transitions. [2020-08-22 02:55:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 02:55:17,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:55:17,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:55:17,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:55:17,314 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:55:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:55:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -242335011, now seen corresponding path program 1 times [2020-08-22 02:55:17,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:55:17,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582963220] [2020-08-22 02:55:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:55:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,650 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:55:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:55:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:55:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:55:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:55:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:55:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:55:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:55:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:55:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:55:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:55:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 02:55:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 02:55:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:55:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 02:55:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 02:55:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 02:55:17,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582963220] [2020-08-22 02:55:17,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:55:17,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 02:55:17,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657097222] [2020-08-22 02:55:17,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:55:17,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:55:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:55:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:55:17,874 INFO L87 Difference]: Start difference. First operand 1727 states and 2059 transitions. Second operand 11 states. [2020-08-22 02:55:18,387 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:20,624 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:20,872 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:21,142 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:21,417 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:21,675 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:55:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:55:22,161 INFO L93 Difference]: Finished difference Result 2058 states and 2631 transitions. [2020-08-22 02:55:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:55:22,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-22 02:55:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:55:22,174 INFO L225 Difference]: With dead ends: 2058 [2020-08-22 02:55:22,174 INFO L226 Difference]: Without dead ends: 2055 [2020-08-22 02:55:22,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-22 02:55:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2020-08-22 02:55:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1727. [2020-08-22 02:55:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-22 02:55:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2049 transitions. [2020-08-22 02:55:22,549 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2049 transitions. Word has length 136 [2020-08-22 02:55:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:55:22,550 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2049 transitions. [2020-08-22 02:55:22,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:55:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2049 transitions. [2020-08-22 02:55:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 02:55:22,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:55:22,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:55:22,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:55:22,563 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:55:22,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:55:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2128978130, now seen corresponding path program 1 times [2020-08-22 02:55:22,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:55:22,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710676709] [2020-08-22 02:55:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:55:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,841 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:55:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:55:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:55:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:55:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:55:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:55:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:55:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:55:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:55:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:55:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 02:55:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:55:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:55:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:55:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:55:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 02:55:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 02:55:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:55:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 02:55:23,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710676709] [2020-08-22 02:55:23,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:55:23,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:55:23,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506331808] [2020-08-22 02:55:23,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:55:23,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:55:23,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:55:23,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:55:23,085 INFO L87 Difference]: Start difference. First operand 1727 states and 2049 transitions. Second operand 12 states. [2020-08-22 02:55:23,607 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:24,221 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:24,800 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:25,096 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:25,356 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:25,642 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:55:25,967 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:26,229 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:55:28,030 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:55:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:55:28,824 INFO L93 Difference]: Finished difference Result 4160 states and 5347 transitions. [2020-08-22 02:55:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 02:55:28,825 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-22 02:55:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:55:28,842 INFO L225 Difference]: With dead ends: 4160 [2020-08-22 02:55:28,842 INFO L226 Difference]: Without dead ends: 2775 [2020-08-22 02:55:28,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 02:55:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2020-08-22 02:55:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2303. [2020-08-22 02:55:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-08-22 02:55:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2786 transitions. [2020-08-22 02:55:29,261 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2786 transitions. Word has length 136 [2020-08-22 02:55:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:55:29,263 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2786 transitions. [2020-08-22 02:55:29,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:55:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2786 transitions. [2020-08-22 02:55:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-22 02:55:29,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:55:29,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-22 02:55:29,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:55:29,272 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:55:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:55:29,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2052523815, now seen corresponding path program 2 times [2020-08-22 02:55:29,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:55:29,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358253935] [2020-08-22 02:55:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:55:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:55:29,348 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:55:29,349 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:55:29,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:55:29,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:55:29 BoogieIcfgContainer [2020-08-22 02:55:29,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:55:29,403 INFO L168 Benchmark]: Toolchain (without parser) took 53238.46 ms. Allocated memory was 141.0 MB in the beginning and 780.7 MB in the end (delta: 639.6 MB). Free memory was 103.9 MB in the beginning and 200.8 MB in the end (delta: -96.9 MB). Peak memory consumption was 542.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:55:29,404 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:55:29,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.69 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.7 MB in the beginning and 174.8 MB in the end (delta: -71.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:55:29,406 INFO L168 Benchmark]: Boogie Preprocessor took 106.17 ms. Allocated memory is still 205.0 MB. Free memory was 174.8 MB in the beginning and 170.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:55:29,409 INFO L168 Benchmark]: RCFGBuilder took 1166.48 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 170.7 MB in the beginning and 197.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:55:29,412 INFO L168 Benchmark]: TraceAbstraction took 51329.06 ms. Allocated memory was 236.5 MB in the beginning and 780.7 MB in the end (delta: 544.2 MB). Free memory was 197.3 MB in the beginning and 200.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 540.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:55:29,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.69 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.7 MB in the beginning and 174.8 MB in the end (delta: -71.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.17 ms. Allocated memory is still 205.0 MB. Free memory was 174.8 MB in the beginning and 170.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.48 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 170.7 MB in the beginning and 197.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51329.06 ms. Allocated memory was 236.5 MB in the beginning and 780.7 MB in the end (delta: 544.2 MB). Free memory was 197.3 MB in the beginning and 200.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 540.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; [L415] FCALL select_helpers() [L416] FCALL select_features() [L417] CALL, EXPR valid_product() [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); [L417] RET, EXPR valid_product() [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) [L421] FCALL setup() [L422] CALL runTest() [L401] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L204] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L289] CALL, EXPR isHighWaterSensorDry() [L514] int retValue_acc ; [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); [L289] RET, EXPR isHighWaterSensorDry() [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L214] pumpRunning = 1 [L169] RET activatePump() [L204] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 [L904] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L904] RET, EXPR isPumpRunning() [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) [L908] CALL __automaton_fail() [L329] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 42.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1500 SDtfs, 4060 SDslu, 1836 SDs, 0 SdLazy, 10937 SolverSat, 2952 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2303occurred 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: 2.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1506 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1204 NumberOfCodeBlocks, 1204 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1005 ConstructedInterpolants, 0 QuantifiedInterpolants, 359743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 134/153 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...