/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:08:46,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:08:46,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:08:46,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:08:46,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:08:46,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:08:46,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:08:46,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:08:46,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:08:46,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:08:46,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:08:46,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:08:46,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:08:46,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:08:46,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:08:46,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:08:46,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:08:46,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:08:46,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:08:46,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:08:46,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:08:46,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:08:46,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:08:46,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:08:46,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:08:46,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:08:46,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:08:46,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:08:46,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:08:46,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:08:46,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:08:46,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:08:46,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:08:46,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:08:46,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:08:46,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:08:46,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:08:46,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:08:46,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:08:46,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:08:46,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:08:46,852 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 [2020-08-18 16:08:46,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:08:46,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:08:46,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:08:46,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:08:46,892 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:08:46,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:08:46,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:08:46,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:08:46,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:08:46,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:08:46,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:08:46,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:08:46,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:08:46,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:08:46,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:08:46,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:08:46,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:08:46,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:08:46,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:08:46,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:08:46,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:08:46,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:08:46,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:08:46,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:08:46,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:08:46,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:08:46,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:08:46,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:08:46,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:08:46,898 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 [2020-08-18 16:08:47,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:08:47,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:08:47,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:08:47,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:08:47,235 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:08:47,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-18 16:08:47,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c752af43d/b51c1dbfd1eb439083cacff28b2eb76f/FLAG616ba5b8e [2020-08-18 16:08:47,793 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:08:47,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-18 16:08:47,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c752af43d/b51c1dbfd1eb439083cacff28b2eb76f/FLAG616ba5b8e [2020-08-18 16:08:48,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c752af43d/b51c1dbfd1eb439083cacff28b2eb76f [2020-08-18 16:08:48,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:08:48,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:08:48,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:08:48,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:08:48,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:08:48,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48, skipping insertion in model container [2020-08-18 16:08:48,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:08:48,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:08:48,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:08:48,560 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:08:48,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:08:48,799 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:08:48,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48 WrapperNode [2020-08-18 16:08:48,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:08:48,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:08:48,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:08:48,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:08:48,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (1/1) ... [2020-08-18 16:08:48,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:08:48,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:08:48,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:08:48,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:08:48,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (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 [2020-08-18 16:08:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:08:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:08:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:08:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:08:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:08:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:08:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:08:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:08:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:08:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:08:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:08:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:08:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:08:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:08:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:08:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:08:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:08:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:08:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:08:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:08:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:08:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:08:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:08:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:08:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:08:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:08:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:08:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:08:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:08:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:08:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:08:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:08:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:08:49,981 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:08:49,981 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:08:49,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:08:49 BoogieIcfgContainer [2020-08-18 16:08:49,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:08:49,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:08:49,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:08:49,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:08:49,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:08:48" (1/3) ... [2020-08-18 16:08:49,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27872e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:08:49, skipping insertion in model container [2020-08-18 16:08:49,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:48" (2/3) ... [2020-08-18 16:08:49,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27872e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:08:49, skipping insertion in model container [2020-08-18 16:08:49,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:08:49" (3/3) ... [2020-08-18 16:08:49,994 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-08-18 16:08:50,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:08:50,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:08:50,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:08:50,050 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:08:50,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:08:50,050 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:08:50,050 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:08:50,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:08:50,051 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:08:50,051 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:08:50,051 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:08:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-18 16:08:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:08:50,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:50,083 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] [2020-08-18 16:08:50,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:50,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1463974042, now seen corresponding path program 1 times [2020-08-18 16:08:50,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:50,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036787971] [2020-08-18 16:08:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,745 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:50,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:08:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:08:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:50,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036787971] [2020-08-18 16:08:50,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:50,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:08:50,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19184702] [2020-08-18 16:08:50,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:08:50,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:08:50,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:08:50,890 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-18 16:08:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:52,062 INFO L93 Difference]: Finished difference Result 302 states and 392 transitions. [2020-08-18 16:08:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:08:52,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:08:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:52,080 INFO L225 Difference]: With dead ends: 302 [2020-08-18 16:08:52,080 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 16:08:52,085 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 [2020-08-18 16:08:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 16:08:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-08-18 16:08:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 16:08:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 16:08:52,182 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-18 16:08:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:52,182 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 16:08:52,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:08:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 16:08:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:08:52,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:52,186 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] [2020-08-18 16:08:52,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:08:52,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash 842471544, now seen corresponding path program 1 times [2020-08-18 16:08:52,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:52,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086798597] [2020-08-18 16:08:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,545 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:08:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:08:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:52,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086798597] [2020-08-18 16:08:52,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:52,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:08:52,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605945104] [2020-08-18 16:08:52,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:08:52,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:52,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:08:52,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:08:52,591 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-18 16:08:52,982 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:53,790 INFO L93 Difference]: Finished difference Result 231 states and 279 transitions. [2020-08-18 16:08:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:08:53,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:08:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:53,799 INFO L225 Difference]: With dead ends: 231 [2020-08-18 16:08:53,800 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 16:08:53,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:08:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 16:08:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-18 16:08:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 16:08:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-18 16:08:53,837 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-18 16:08:53,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:53,838 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-18 16:08:53,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:08:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-18 16:08:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:08:53,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:53,843 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] [2020-08-18 16:08:53,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:08:53,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:53,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1913748360, now seen corresponding path program 1 times [2020-08-18 16:08:53,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:53,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759504341] [2020-08-18 16:08:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,196 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:54,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:08:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:08:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:54,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759504341] [2020-08-18 16:08:54,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:54,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:08:54,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082102403] [2020-08-18 16:08:54,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:08:54,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:54,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:08:54,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:08:54,270 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-18 16:08:54,600 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:54,931 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:55,183 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:55,420 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:56,593 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2020-08-18 16:08:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:08:56,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 16:08:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:56,598 INFO L225 Difference]: With dead ends: 244 [2020-08-18 16:08:56,598 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 16:08:56,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:08:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 16:08:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-18 16:08:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 16:08:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2020-08-18 16:08:56,632 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 52 [2020-08-18 16:08:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:56,633 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2020-08-18 16:08:56,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:08:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2020-08-18 16:08:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 16:08:56,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:56,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:56,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:08:56,636 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1607213040, now seen corresponding path program 1 times [2020-08-18 16:08:56,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:56,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481451223] [2020-08-18 16:08:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:56,997 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:56,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:08:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:08:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 16:08:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:57,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481451223] [2020-08-18 16:08:57,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:57,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:08:57,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263437970] [2020-08-18 16:08:57,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:08:57,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:57,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:08:57,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:08:57,078 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 6 states. [2020-08-18 16:08:57,381 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:58,537 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:59,247 INFO L93 Difference]: Finished difference Result 341 states and 419 transitions. [2020-08-18 16:08:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:08:59,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 16:08:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:59,253 INFO L225 Difference]: With dead ends: 341 [2020-08-18 16:08:59,254 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 16:08:59,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:08:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 16:08:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-18 16:08:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-18 16:08:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 227 transitions. [2020-08-18 16:08:59,307 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 227 transitions. Word has length 65 [2020-08-18 16:08:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:59,308 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 227 transitions. [2020-08-18 16:08:59,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:08:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 227 transitions. [2020-08-18 16:08:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 16:08:59,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:59,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:59,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:08:59,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1567646189, now seen corresponding path program 1 times [2020-08-18 16:08:59,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:59,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394957267] [2020-08-18 16:08:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,605 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:08:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:08:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 16:08:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 16:08:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:59,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394957267] [2020-08-18 16:08:59,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:59,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:08:59,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173637141] [2020-08-18 16:08:59,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:08:59,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:08:59,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:08:59,759 INFO L87 Difference]: Start difference. First operand 201 states and 227 transitions. Second operand 12 states. [2020-08-18 16:09:00,119 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:00,436 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:00,693 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:00,930 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:01,444 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:02,387 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:02,667 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:02,887 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:03,111 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:03,387 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:03,641 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:04,882 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:05,209 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:05,713 INFO L93 Difference]: Finished difference Result 707 states and 910 transitions. [2020-08-18 16:09:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:09:05,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 16:09:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:05,721 INFO L225 Difference]: With dead ends: 707 [2020-08-18 16:09:05,721 INFO L226 Difference]: Without dead ends: 530 [2020-08-18 16:09:05,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:09:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-08-18 16:09:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 468. [2020-08-18 16:09:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-18 16:09:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 547 transitions. [2020-08-18 16:09:05,837 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 547 transitions. Word has length 79 [2020-08-18 16:09:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:05,838 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 547 transitions. [2020-08-18 16:09:05,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 547 transitions. [2020-08-18 16:09:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 16:09:05,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:05,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:05,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:09:05,842 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:05,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1919635093, now seen corresponding path program 1 times [2020-08-18 16:09:05,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:05,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920887573] [2020-08-18 16:09:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,165 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:09:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:09:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:09:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 16:09:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 16:09:06,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920887573] [2020-08-18 16:09:06,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:06,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:09:06,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440903449] [2020-08-18 16:09:06,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:09:06,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:09:06,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:06,379 INFO L87 Difference]: Start difference. First operand 468 states and 547 transitions. Second operand 13 states. [2020-08-18 16:09:06,777 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:07,369 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:07,938 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:08,193 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:09:08,458 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:08,698 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:08,930 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:09,173 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:09:09,458 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:09,736 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:11,409 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:11,660 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:09:11,896 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:12,142 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:12,681 INFO L93 Difference]: Finished difference Result 951 states and 1203 transitions. [2020-08-18 16:09:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 16:09:12,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-18 16:09:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:12,686 INFO L225 Difference]: With dead ends: 951 [2020-08-18 16:09:12,687 INFO L226 Difference]: Without dead ends: 507 [2020-08-18 16:09:12,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 16:09:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-18 16:09:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2020-08-18 16:09:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-18 16:09:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 518 transitions. [2020-08-18 16:09:12,774 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 518 transitions. Word has length 136 [2020-08-18 16:09:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:12,774 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 518 transitions. [2020-08-18 16:09:12,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:09:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 518 transitions. [2020-08-18 16:09:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 16:09:12,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:12,777 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] [2020-08-18 16:09:12,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:09:12,778 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 529869601, now seen corresponding path program 1 times [2020-08-18 16:09:12,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:12,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083651826] [2020-08-18 16:09:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,075 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:09:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:09:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:09:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:09:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:09:13,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083651826] [2020-08-18 16:09:13,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:13,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952723830] [2020-08-18 16:09:13,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:13,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:13,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:13,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:13,259 INFO L87 Difference]: Start difference. First operand 440 states and 518 transitions. Second operand 12 states. [2020-08-18 16:09:13,954 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:14,204 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:14,444 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:15,038 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:15,280 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:15,500 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:16,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:16,383 INFO L93 Difference]: Finished difference Result 803 states and 979 transitions. [2020-08-18 16:09:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:09:16,387 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 16:09:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:16,390 INFO L225 Difference]: With dead ends: 803 [2020-08-18 16:09:16,391 INFO L226 Difference]: Without dead ends: 387 [2020-08-18 16:09:16,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:09:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-18 16:09:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 361. [2020-08-18 16:09:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 16:09:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 422 transitions. [2020-08-18 16:09:16,451 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 422 transitions. Word has length 128 [2020-08-18 16:09:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:16,452 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 422 transitions. [2020-08-18 16:09:16,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 422 transitions. [2020-08-18 16:09:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 16:09:16,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:16,454 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] [2020-08-18 16:09:16,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:09:16,454 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1312911802, now seen corresponding path program 1 times [2020-08-18 16:09:16,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:16,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193850822] [2020-08-18 16:09:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,724 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 16:09:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:09:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 16:09:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 16:09:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 16:09:16,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193850822] [2020-08-18 16:09:16,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:16,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:09:16,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325423341] [2020-08-18 16:09:16,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:09:16,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:09:16,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:16,984 INFO L87 Difference]: Start difference. First operand 361 states and 422 transitions. Second operand 13 states. [2020-08-18 16:09:17,628 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:18,446 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:20,252 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:20,525 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:20,769 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:21,012 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:21,260 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:21,503 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:21,726 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:21,949 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:22,208 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:22,432 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:23,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:23,052 INFO L93 Difference]: Finished difference Result 1017 states and 1234 transitions. [2020-08-18 16:09:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:09:23,053 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-18 16:09:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:23,060 INFO L225 Difference]: With dead ends: 1017 [2020-08-18 16:09:23,061 INFO L226 Difference]: Without dead ends: 680 [2020-08-18 16:09:23,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:09:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-08-18 16:09:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 638. [2020-08-18 16:09:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-18 16:09:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 736 transitions. [2020-08-18 16:09:23,264 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 736 transitions. Word has length 132 [2020-08-18 16:09:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:23,264 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 736 transitions. [2020-08-18 16:09:23,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:09:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 736 transitions. [2020-08-18 16:09:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 16:09:23,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:23,267 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] [2020-08-18 16:09:23,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:09:23,268 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:23,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1866114282, now seen corresponding path program 1 times [2020-08-18 16:09:23,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:23,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935181176] [2020-08-18 16:09:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,556 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:23,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:09:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:09:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:09:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:09:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 16:09:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 16:09:23,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935181176] [2020-08-18 16:09:23,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:23,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:09:23,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981968279] [2020-08-18 16:09:23,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:09:23,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:23,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:09:23,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:09:23,722 INFO L87 Difference]: Start difference. First operand 638 states and 736 transitions. Second operand 11 states. [2020-08-18 16:09:24,595 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:26,353 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:26,578 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:26,833 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:27,083 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:27,303 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:27,833 INFO L93 Difference]: Finished difference Result 764 states and 950 transitions. [2020-08-18 16:09:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:09:27,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-18 16:09:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:27,840 INFO L225 Difference]: With dead ends: 764 [2020-08-18 16:09:27,840 INFO L226 Difference]: Without dead ends: 761 [2020-08-18 16:09:27,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:09:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-08-18 16:09:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 638. [2020-08-18 16:09:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-18 16:09:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 734 transitions. [2020-08-18 16:09:27,979 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 734 transitions. Word has length 136 [2020-08-18 16:09:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:27,979 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 734 transitions. [2020-08-18 16:09:27,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:09:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 734 transitions. [2020-08-18 16:09:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 16:09:27,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:27,982 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] [2020-08-18 16:09:27,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:09:27,983 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1647665506, now seen corresponding path program 1 times [2020-08-18 16:09:27,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:27,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047570261] [2020-08-18 16:09:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,298 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:28,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 16:09:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:09:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 16:09:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 16:09:28,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047570261] [2020-08-18 16:09:28,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:28,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:28,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184937263] [2020-08-18 16:09:28,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:28,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:28,482 INFO L87 Difference]: Start difference. First operand 638 states and 734 transitions. Second operand 12 states. [2020-08-18 16:09:28,941 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:29,797 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:30,385 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:30,644 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:30,868 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:31,099 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:31,352 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:31,588 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:33,112 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:33,345 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:33,903 INFO L93 Difference]: Finished difference Result 1512 states and 1864 transitions. [2020-08-18 16:09:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 16:09:33,903 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-18 16:09:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:33,909 INFO L225 Difference]: With dead ends: 1512 [2020-08-18 16:09:33,910 INFO L226 Difference]: Without dead ends: 1024 [2020-08-18 16:09:33,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 16:09:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-18 16:09:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 867. [2020-08-18 16:09:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-18 16:09:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1012 transitions. [2020-08-18 16:09:34,086 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1012 transitions. Word has length 136 [2020-08-18 16:09:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:34,087 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1012 transitions. [2020-08-18 16:09:34,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1012 transitions. [2020-08-18 16:09:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 16:09:34,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:34,092 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, 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] [2020-08-18 16:09:34,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:09:34,093 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:34,093 INFO L82 PathProgramCache]: Analyzing trace with hash -960638147, now seen corresponding path program 2 times [2020-08-18 16:09:34,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:34,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112464692] [2020-08-18 16:09:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,484 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:34,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 16:09:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 16:09:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 16:09:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 16:09:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 16:09:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 16:09:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-18 16:09:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112464692] [2020-08-18 16:09:34,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:34,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 16:09:34,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601315518] [2020-08-18 16:09:34,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:09:34,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:34,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:09:34,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:09:34,791 INFO L87 Difference]: Start difference. First operand 867 states and 1012 transitions. Second operand 14 states. [2020-08-18 16:09:35,526 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:36,121 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:37,038 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:37,318 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:37,565 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:37,809 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:38,072 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:38,316 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:39,478 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:39,723 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:40,578 INFO L93 Difference]: Finished difference Result 2101 states and 2694 transitions. [2020-08-18 16:09:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 16:09:40,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2020-08-18 16:09:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:40,588 INFO L225 Difference]: With dead ends: 2101 [2020-08-18 16:09:40,589 INFO L226 Difference]: Without dead ends: 1384 [2020-08-18 16:09:40,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 16:09:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-08-18 16:09:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 865. [2020-08-18 16:09:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-08-18 16:09:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1010 transitions. [2020-08-18 16:09:40,755 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1010 transitions. Word has length 192 [2020-08-18 16:09:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:40,756 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1010 transitions. [2020-08-18 16:09:40,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:09:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1010 transitions. [2020-08-18 16:09:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-18 16:09:40,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:40,760 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] [2020-08-18 16:09:40,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:09:40,761 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1788025149, now seen corresponding path program 3 times [2020-08-18 16:09:40,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:40,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734628732] [2020-08-18 16:09:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:09:40,824 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:09:40,825 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:09:40,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:09:40,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:09:40 BoogieIcfgContainer [2020-08-18 16:09:40,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:09:40,863 INFO L168 Benchmark]: Toolchain (without parser) took 52739.90 ms. Allocated memory was 147.8 MB in the beginning and 708.8 MB in the end (delta: 561.0 MB). Free memory was 103.3 MB in the beginning and 191.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 472.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:40,864 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:09:40,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.41 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 174.9 MB in the end (delta: -71.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:40,865 INFO L168 Benchmark]: Boogie Preprocessor took 87.37 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 170.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:40,866 INFO L168 Benchmark]: RCFGBuilder took 1098.07 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 170.7 MB in the beginning and 196.7 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:40,866 INFO L168 Benchmark]: TraceAbstraction took 50873.61 ms. Allocated memory was 234.4 MB in the beginning and 708.8 MB in the end (delta: 474.5 MB). Free memory was 195.4 MB in the beginning and 191.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 478.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:40,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.41 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 174.9 MB in the end (delta: -71.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.37 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 170.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1098.07 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 170.7 MB in the beginning and 196.7 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50873.61 ms. Allocated memory was 234.4 MB in the beginning and 708.8 MB in the end (delta: 474.5 MB). Free memory was 195.4 MB in the beginning and 191.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 478.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) [L302] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L302] RET waterRise() [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND FALSE !(\read(pumpRunning)) [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND FALSE !(\read(pumpRunning)) [L429] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND TRUE ! pumpRunning [L390] CALL, EXPR isHighWaterLevel() [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L514] CALL, EXPR isHighWaterSensorDry() [L229] int retValue_acc ; [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); [L514] RET, EXPR isHighWaterSensorDry() [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); [L390] RET, EXPR isHighWaterLevel() [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L394] CALL activatePump() [L439] pumpRunning = 1 [L394] RET activatePump() [L429] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L263] CALL, EXPR isPumpRunning() [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); [L263] RET, EXPR isPumpRunning() [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) [L267] CALL __automaton_fail() [L247] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 43.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1435 SDtfs, 3500 SDslu, 1969 SDs, 0 SdLazy, 10936 SolverSat, 2502 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 413 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 1124 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1337 NumberOfCodeBlocks, 1337 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1138 ConstructedInterpolants, 0 QuantifiedInterpolants, 455757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 211/247 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...