/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:35:15,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:35:15,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:35:15,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:35:15,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:35:15,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:35:15,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:35:15,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:35:15,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:35:15,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:35:15,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:35:16,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:35:16,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:35:16,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:35:16,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:35:16,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:35:16,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:35:16,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:35:16,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:35:16,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:35:16,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:35:16,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:35:16,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:35:16,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:35:16,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:35:16,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:35:16,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:35:16,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:35:16,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:35:16,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:35:16,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:35:16,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:35:16,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:35:16,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:35:16,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:35:16,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:35:16,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:35:16,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:35:16,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:35:16,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:35:16,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:35:16,047 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 22:35:16,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:35:16,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:35:16,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:35:16,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:35:16,091 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:35:16,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:35:16,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:35:16,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:35:16,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:35:16,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:35:16,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:35:16,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:35:16,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:35:16,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:35:16,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:35:16,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:35:16,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:35:16,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:35:16,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:35:16,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:35:16,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:35:16,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:35:16,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:35:16,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:35:16,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:35:16,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:35:16,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:35:16,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:35:16,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:35:16,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:35:16,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:35:16,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:35:16,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:35:16,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:35:16,452 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:35:16,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-18 22:35:16,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/245a13d53/ab519a19ef444141b33165c053923bcd/FLAG47bf67424 [2020-08-18 22:35:17,007 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:35:17,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-18 22:35:17,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/245a13d53/ab519a19ef444141b33165c053923bcd/FLAG47bf67424 [2020-08-18 22:35:17,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/245a13d53/ab519a19ef444141b33165c053923bcd [2020-08-18 22:35:17,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:35:17,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:35:17,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:17,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:35:17,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:35:17,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:17,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17, skipping insertion in model container [2020-08-18 22:35:17,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:17,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:35:17,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:35:17,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:17,858 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:35:17,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:17,961 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:35:17,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17 WrapperNode [2020-08-18 22:35:17,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:17,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:35:17,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:35:17,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:35:17,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:17,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:17,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:17,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:18,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:18,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:18,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (1/1) ... [2020-08-18 22:35:18,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:35:18,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:35:18,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:35:18,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:35:18,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (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 22:35:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:35:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:35:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:35:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:35:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:35:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:35:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:35:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:35:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:35:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:35:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:35:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:35:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:35:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:35:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:35:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:35:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:35:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:35:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:35:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:35:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:35:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:35:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:35:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:35:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:35:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:35:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:35:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:35:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:35:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:35:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:35:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:35:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:35:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:35:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:35:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:35:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:35:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:35:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:35:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:35:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:35:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:35:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:35:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:35:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:35:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:35:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:35:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:35:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:35:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:35:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:35:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:35:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:35:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:35:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:35:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:35:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:35:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:35:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:35:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:35:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:35:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:35:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:35:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:35:19,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:35:19,246 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:35:19,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:19 BoogieIcfgContainer [2020-08-18 22:35:19,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:35:19,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:35:19,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:35:19,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:35:19,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:35:17" (1/3) ... [2020-08-18 22:35:19,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7942fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:19, skipping insertion in model container [2020-08-18 22:35:19,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:17" (2/3) ... [2020-08-18 22:35:19,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7942fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:19, skipping insertion in model container [2020-08-18 22:35:19,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:19" (3/3) ... [2020-08-18 22:35:19,259 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-18 22:35:19,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:35:19,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:35:19,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:35:19,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:35:19,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:35:19,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:35:19,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:35:19,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:35:19,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:35:19,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:35:19,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:35:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-18 22:35:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:35:19,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:19,351 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 22:35:19,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-18 22:35:19,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:19,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163428585] [2020-08-18 22:35:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,060 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:35:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:35:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:20,238 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 22:35:20,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163428585] [2020-08-18 22:35:20,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:20,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:35:20,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029846991] [2020-08-18 22:35:20,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:35:20,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:35:20,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:20,274 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-18 22:35:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:21,295 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 22:35:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:35:21,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:35:21,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:21,314 INFO L225 Difference]: With dead ends: 249 [2020-08-18 22:35:21,315 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 22:35:21,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 22:35:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 22:35:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 22:35:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 22:35:21,402 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-18 22:35:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:21,402 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 22:35:21,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:35:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 22:35:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:35:21,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:21,406 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 22:35:21,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:35:21,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:21,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-18 22:35:21,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:21,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875876308] [2020-08-18 22:35:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,731 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:21,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:35:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:21,820 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 22:35:21,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875876308] [2020-08-18 22:35:21,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:21,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:35:21,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782284472] [2020-08-18 22:35:21,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:35:21,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:35:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:35:21,825 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 22:35:22,260 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:22,851 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 22:35:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:35:22,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:35:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:22,856 INFO L225 Difference]: With dead ends: 182 [2020-08-18 22:35:22,856 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 22:35:22,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:35:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 22:35:22,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 22:35:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 22:35:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 22:35:22,910 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-18 22:35:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:22,912 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 22:35:22,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:35:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 22:35:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 22:35:22,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:22,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:22,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:35:22,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-18 22:35:22,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715052546] [2020-08-18 22:35:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,219 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:35:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:35:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:23,322 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 22:35:23,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715052546] [2020-08-18 22:35:23,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:23,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:35:23,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729317145] [2020-08-18 22:35:23,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:35:23,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:23,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:35:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:35:23,325 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 22:35:23,727 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:24,002 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:24,235 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:24,472 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:25,282 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 22:35:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:35:25,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 22:35:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:25,288 INFO L225 Difference]: With dead ends: 191 [2020-08-18 22:35:25,288 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 22:35:25,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 22:35:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 22:35:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 22:35:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 22:35:25,318 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-18 22:35:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:25,318 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 22:35:25,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:35:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 22:35:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 22:35:25,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:25,320 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] [2020-08-18 22:35:25,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:35:25,321 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:25,321 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-18 22:35:25,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:25,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294306004] [2020-08-18 22:35:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,621 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:35:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:35:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:35:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:25,698 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 22:35:25,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294306004] [2020-08-18 22:35:25,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:25,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:35:25,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591656055] [2020-08-18 22:35:25,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:35:25,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:25,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:35:25,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:35:25,701 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-18 22:35:26,019 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:27,072 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:27,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:27,463 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-18 22:35:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:35:27,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 22:35:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:27,467 INFO L225 Difference]: With dead ends: 274 [2020-08-18 22:35:27,468 INFO L226 Difference]: Without dead ends: 202 [2020-08-18 22:35:27,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:35:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-18 22:35:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-18 22:35:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-18 22:35:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-18 22:35:27,511 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-18 22:35:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:27,511 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-18 22:35:27,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:35:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-18 22:35:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 22:35:27,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:27,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:27,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:35:27,513 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-18 22:35:27,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:27,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293130661] [2020-08-18 22:35:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,839 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:35:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:35:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 22:35:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:35:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:27,992 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 22:35:27,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293130661] [2020-08-18 22:35:27,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:27,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:35:27,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973492805] [2020-08-18 22:35:27,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:35:27,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:27,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:35:27,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:27,996 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-18 22:35:28,445 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:28,766 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:29,008 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:29,259 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:29,789 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:30,528 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:30,815 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:31,051 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:31,272 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:31,532 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:31,785 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:32,679 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:32,971 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:33,624 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-18 22:35:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:35:33,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-18 22:35:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:33,632 INFO L225 Difference]: With dead ends: 568 [2020-08-18 22:35:33,632 INFO L226 Difference]: Without dead ends: 431 [2020-08-18 22:35:33,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 22:35:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-18 22:35:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-18 22:35:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 22:35:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-18 22:35:33,753 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-18 22:35:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:33,753 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-18 22:35:33,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:35:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-18 22:35:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-18 22:35:33,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:33,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:33,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:35:33,757 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1180420772, now seen corresponding path program 1 times [2020-08-18 22:35:33,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:33,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110894553] [2020-08-18 22:35:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,042 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:35:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:35:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:35:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 22:35:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 22:35:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:35:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 22:35:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 22:35:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:35:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 22:35:34,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110894553] [2020-08-18 22:35:34,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:35:34,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:35:34,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38022745] [2020-08-18 22:35:34,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:35:34,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:34,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:35:34,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:35:34,308 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-18 22:35:34,821 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:35,387 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:35,877 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:36,129 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:35:36,396 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:36,633 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:36,863 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:37,125 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:35:37,392 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:37,654 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:38,954 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:39,184 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:35:39,408 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:39,634 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:40,083 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-18 22:35:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 22:35:40,084 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-18 22:35:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:40,092 INFO L225 Difference]: With dead ends: 778 [2020-08-18 22:35:40,092 INFO L226 Difference]: Without dead ends: 429 [2020-08-18 22:35:40,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 22:35:40,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-18 22:35:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-18 22:35:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-18 22:35:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-18 22:35:40,190 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-18 22:35:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:40,190 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-18 22:35:40,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:35:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-18 22:35:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 22:35:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:40,193 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] [2020-08-18 22:35:40,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:35:40,193 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-18 22:35:40,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:40,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219397628] [2020-08-18 22:35:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,468 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:35:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:35:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 22:35:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:35:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 22:35:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 22:35:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:35:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 22:35:40,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219397628] [2020-08-18 22:35:40,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:35:40,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:35:40,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393060630] [2020-08-18 22:35:40,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:35:40,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:40,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:35:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:40,623 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-18 22:35:41,194 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:41,436 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:41,654 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:42,148 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:42,378 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:42,634 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:43,313 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-18 22:35:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:35:43,315 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 22:35:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:43,320 INFO L225 Difference]: With dead ends: 663 [2020-08-18 22:35:43,320 INFO L226 Difference]: Without dead ends: 320 [2020-08-18 22:35:43,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 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 22:35:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-18 22:35:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-18 22:35:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-18 22:35:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-18 22:35:43,398 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-18 22:35:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:43,399 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-18 22:35:43,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:35:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-18 22:35:43,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 22:35:43,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:43,401 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] [2020-08-18 22:35:43,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:35:43,402 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-18 22:35:43,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:43,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403495099] [2020-08-18 22:35:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,734 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:35:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:35:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:35:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 22:35:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 22:35:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:35:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:35:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:35:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:35:43,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403495099] [2020-08-18 22:35:43,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:35:43,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:35:43,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159373264] [2020-08-18 22:35:43,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:35:43,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:43,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:35:43,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:43,905 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-18 22:35:44,413 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:45,195 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:45,722 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:46,016 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:46,269 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:46,514 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:46,780 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:47,053 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:47,984 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:48,258 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:48,777 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-18 22:35:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 22:35:48,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-18 22:35:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:48,783 INFO L225 Difference]: With dead ends: 687 [2020-08-18 22:35:48,783 INFO L226 Difference]: Without dead ends: 469 [2020-08-18 22:35:48,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-18 22:35:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-18 22:35:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-18 22:35:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-18 22:35:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-18 22:35:48,878 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-18 22:35:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:48,880 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-18 22:35:48,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:35:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-18 22:35:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 22:35:48,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:48,887 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, 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] [2020-08-18 22:35:48,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:35:48,888 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-18 22:35:48,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:48,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160533963] [2020-08-18 22:35:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:35:49,011 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:35:49,011 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:35:49,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:35:49,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:35:49 BoogieIcfgContainer [2020-08-18 22:35:49,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:35:49,071 INFO L168 Benchmark]: Toolchain (without parser) took 31755.52 ms. Allocated memory was 140.0 MB in the beginning and 624.4 MB in the end (delta: 484.4 MB). Free memory was 101.8 MB in the beginning and 580.2 MB in the end (delta: -478.3 MB). Peak memory consumption was 481.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:35:49,079 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:35:49,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.00 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.6 MB in the beginning and 169.6 MB in the end (delta: -67.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:35:49,081 INFO L168 Benchmark]: Boogie Preprocessor took 83.27 ms. Allocated memory is still 201.3 MB. Free memory was 169.6 MB in the beginning and 165.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:35:49,083 INFO L168 Benchmark]: RCFGBuilder took 1204.43 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 165.2 MB in the beginning and 197.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:35:49,086 INFO L168 Benchmark]: TraceAbstraction took 29813.08 ms. Allocated memory was 235.4 MB in the beginning and 624.4 MB in the end (delta: 389.0 MB). Free memory was 197.5 MB in the beginning and 580.2 MB in the end (delta: -382.6 MB). Peak memory consumption was 481.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:35:49,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 650.00 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.6 MB in the beginning and 169.6 MB in the end (delta: -67.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.27 ms. Allocated memory is still 201.3 MB. Free memory was 169.6 MB in the beginning and 165.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1204.43 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 165.2 MB in the beginning and 197.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29813.08 ms. Allocated memory was 235.4 MB in the beginning and 624.4 MB in the end (delta: 389.0 MB). Free memory was 197.5 MB in the beginning and 580.2 MB in the end (delta: -382.6 MB). Peak memory consumption was 481.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.7s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 804 SDtfs, 1767 SDslu, 1084 SDs, 0 SdLazy, 5115 SolverSat, 1150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...