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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:15:32,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:15:32,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:15:32,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:15:32,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:15:32,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:15:32,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:15:32,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:15:33,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:15:33,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:15:33,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:15:33,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:15:33,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:15:33,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:15:33,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:15:33,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:15:33,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:15:33,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:15:33,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:15:33,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:15:33,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:15:33,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:15:33,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:15:33,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:15:33,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:15:33,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:15:33,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:15:33,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:15:33,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:15:33,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:15:33,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:15:33,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:15:33,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:15:33,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:15:33,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:15:33,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:15:33,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:15:33,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:15:33,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:15:33,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:15:33,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:15:33,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:15:33,043 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:15:33,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:15:33,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:15:33,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:15:33,045 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:15:33,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:15:33,046 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:15:33,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:15:33,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:15:33,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:15:33,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:15:33,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:15:33,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:15:33,047 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:15:33,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:15:33,047 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:15:33,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:15:33,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:15:33,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:15:33,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:15:33,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:15:33,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:15:33,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:15:33,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:15:33,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:15:33,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:15:33,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:15:33,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:15:33,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:15:33,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:15:33,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:15:33,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:15:33,388 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:15:33,388 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:15:33,389 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2019-10-13 23:15:33,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455c0b4f0/83a6770acde742caa47f2dca6550afa9/FLAGbf1d628a5 [2019-10-13 23:15:34,016 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:15:34,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2019-10-13 23:15:34,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455c0b4f0/83a6770acde742caa47f2dca6550afa9/FLAGbf1d628a5 [2019-10-13 23:15:34,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455c0b4f0/83a6770acde742caa47f2dca6550afa9 [2019-10-13 23:15:34,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:15:34,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:15:34,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:34,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:15:34,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:15:34,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:34" (1/1) ... [2019-10-13 23:15:34,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507cfa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:34, skipping insertion in model container [2019-10-13 23:15:34,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:34" (1/1) ... [2019-10-13 23:15:34,381 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:15:34,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:15:34,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:34,887 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:15:35,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:35,040 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:15:35,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35 WrapperNode [2019-10-13 23:15:35,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:35,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:15:35,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:15:35,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:15:35,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... [2019-10-13 23:15:35,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:15:35,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:15:35,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:15:35,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:15:35,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 23:15:35,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:15:35,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:15:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:15:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:15:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:15:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:15:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:15:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:15:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:15:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:15:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:15:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:15:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:15:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:15:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:15:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:15:35,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:35,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:15:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:15:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:15:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:15:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:15:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:15:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:15:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:15:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:15:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:15:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:15:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:15:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:15:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:15:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:15:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:15:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:15:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:15:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:15:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:15:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:15:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:15:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:15:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:15:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:15:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:15:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:15:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:15:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:15:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:15:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:15:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:15:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:15:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:15:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:15:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:15:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:15:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:15:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:15:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:15:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:15:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:15:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:15:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:15:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:15:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:15:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:15:37,042 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:15:37,043 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:15:37,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:37 BoogieIcfgContainer [2019-10-13 23:15:37,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:15:37,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:15:37,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:15:37,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:15:37,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:15:34" (1/3) ... [2019-10-13 23:15:37,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ecc2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:37, skipping insertion in model container [2019-10-13 23:15:37,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:35" (2/3) ... [2019-10-13 23:15:37,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ecc2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:37, skipping insertion in model container [2019-10-13 23:15:37,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:37" (3/3) ... [2019-10-13 23:15:37,054 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2019-10-13 23:15:37,064 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:15:37,075 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:15:37,086 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:15:37,117 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:15:37,117 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:15:37,118 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:15:37,118 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:15:37,118 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:15:37,118 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:15:37,119 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:15:37,119 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:15:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-13 23:15:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:15:37,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:37,152 INFO L380 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] [2019-10-13 23:15:37,154 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:37,159 INFO L82 PathProgramCache]: Analyzing trace with hash -94018598, now seen corresponding path program 1 times [2019-10-13 23:15:37,168 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:37,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097265989] [2019-10-13 23:15:37,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:37,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:37,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:37,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097265989] [2019-10-13 23:15:37,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:37,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:15:37,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125283265] [2019-10-13 23:15:37,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:15:37,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:37,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:15:37,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:37,485 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-10-13 23:15:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:37,531 INFO L93 Difference]: Finished difference Result 264 states and 325 transitions. [2019-10-13 23:15:37,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:15:37,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-13 23:15:37,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:37,547 INFO L225 Difference]: With dead ends: 264 [2019-10-13 23:15:37,547 INFO L226 Difference]: Without dead ends: 134 [2019-10-13 23:15:37,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-13 23:15:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-10-13 23:15:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 23:15:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2019-10-13 23:15:37,611 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2019-10-13 23:15:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:37,611 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2019-10-13 23:15:37,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:15:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2019-10-13 23:15:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 23:15:37,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:37,616 INFO L380 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] [2019-10-13 23:15:37,616 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash -942720183, now seen corresponding path program 1 times [2019-10-13 23:15:37,617 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:37,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606104976] [2019-10-13 23:15:37,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:37,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:37,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:37,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606104976] [2019-10-13 23:15:37,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:37,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:15:37,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147016396] [2019-10-13 23:15:37,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:37,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:37,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:37,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:37,760 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 3 states. [2019-10-13 23:15:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:37,794 INFO L93 Difference]: Finished difference Result 212 states and 250 transitions. [2019-10-13 23:15:37,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:37,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-13 23:15:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:37,798 INFO L225 Difference]: With dead ends: 212 [2019-10-13 23:15:37,798 INFO L226 Difference]: Without dead ends: 126 [2019-10-13 23:15:37,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-13 23:15:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-13 23:15:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-13 23:15:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2019-10-13 23:15:37,819 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 47 [2019-10-13 23:15:37,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:37,819 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2019-10-13 23:15:37,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2019-10-13 23:15:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 23:15:37,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:37,822 INFO L380 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] [2019-10-13 23:15:37,823 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1287564491, now seen corresponding path program 1 times [2019-10-13 23:15:37,823 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:37,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856183138] [2019-10-13 23:15:37,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:37,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:37,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:38,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856183138] [2019-10-13 23:15:38,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:38,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:38,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126493072] [2019-10-13 23:15:38,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:38,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:38,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:38,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:38,031 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2019-10-13 23:15:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:38,559 INFO L93 Difference]: Finished difference Result 374 states and 453 transitions. [2019-10-13 23:15:38,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:15:38,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-13 23:15:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:38,567 INFO L225 Difference]: With dead ends: 374 [2019-10-13 23:15:38,568 INFO L226 Difference]: Without dead ends: 273 [2019-10-13 23:15:38,571 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:15:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-13 23:15:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2019-10-13 23:15:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2019-10-13 23:15:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 315 transitions. [2019-10-13 23:15:38,640 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 315 transitions. Word has length 51 [2019-10-13 23:15:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:38,641 INFO L462 AbstractCegarLoop]: Abstraction has 261 states and 315 transitions. [2019-10-13 23:15:38,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 315 transitions. [2019-10-13 23:15:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 23:15:38,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:38,650 INFO L380 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] [2019-10-13 23:15:38,651 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:38,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1396472504, now seen corresponding path program 1 times [2019-10-13 23:15:38,654 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:38,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534384336] [2019-10-13 23:15:38,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:38,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:38,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:38,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534384336] [2019-10-13 23:15:38,862 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:38,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:15:38,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685425103] [2019-10-13 23:15:38,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:15:38,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:15:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:15:38,864 INFO L87 Difference]: Start difference. First operand 261 states and 315 transitions. Second operand 6 states. [2019-10-13 23:15:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:39,184 INFO L93 Difference]: Finished difference Result 715 states and 882 transitions. [2019-10-13 23:15:39,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:15:39,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-13 23:15:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:39,190 INFO L225 Difference]: With dead ends: 715 [2019-10-13 23:15:39,191 INFO L226 Difference]: Without dead ends: 479 [2019-10-13 23:15:39,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:15:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-10-13 23:15:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 467. [2019-10-13 23:15:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-13 23:15:39,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 567 transitions. [2019-10-13 23:15:39,267 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 567 transitions. Word has length 55 [2019-10-13 23:15:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:39,269 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 567 transitions. [2019-10-13 23:15:39,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:15:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 567 transitions. [2019-10-13 23:15:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 23:15:39,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:39,273 INFO L380 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] [2019-10-13 23:15:39,273 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash -753021792, now seen corresponding path program 1 times [2019-10-13 23:15:39,274 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:39,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224655805] [2019-10-13 23:15:39,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:39,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224655805] [2019-10-13 23:15:39,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:39,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:39,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145338399] [2019-10-13 23:15:39,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:39,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:39,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:39,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:39,447 INFO L87 Difference]: Start difference. First operand 467 states and 567 transitions. Second operand 7 states. [2019-10-13 23:15:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:40,160 INFO L93 Difference]: Finished difference Result 1235 states and 1626 transitions. [2019-10-13 23:15:40,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:15:40,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-13 23:15:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:40,170 INFO L225 Difference]: With dead ends: 1235 [2019-10-13 23:15:40,170 INFO L226 Difference]: Without dead ends: 793 [2019-10-13 23:15:40,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:15:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2019-10-13 23:15:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 704. [2019-10-13 23:15:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-13 23:15:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 848 transitions. [2019-10-13 23:15:40,259 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 848 transitions. Word has length 58 [2019-10-13 23:15:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:40,259 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 848 transitions. [2019-10-13 23:15:40,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 848 transitions. [2019-10-13 23:15:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:15:40,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:40,262 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:40,262 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash -737223390, now seen corresponding path program 1 times [2019-10-13 23:15:40,263 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:40,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120738990] [2019-10-13 23:15:40,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:40,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:40,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:40,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120738990] [2019-10-13 23:15:40,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:40,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:15:40,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606832187] [2019-10-13 23:15:40,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:40,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:40,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:40,394 INFO L87 Difference]: Start difference. First operand 704 states and 848 transitions. Second operand 3 states. [2019-10-13 23:15:40,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:40,468 INFO L93 Difference]: Finished difference Result 999 states and 1230 transitions. [2019-10-13 23:15:40,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:40,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:15:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:40,478 INFO L225 Difference]: With dead ends: 999 [2019-10-13 23:15:40,479 INFO L226 Difference]: Without dead ends: 996 [2019-10-13 23:15:40,480 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:40,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-13 23:15:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 956. [2019-10-13 23:15:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2019-10-13 23:15:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1177 transitions. [2019-10-13 23:15:40,553 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1177 transitions. Word has length 81 [2019-10-13 23:15:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:40,553 INFO L462 AbstractCegarLoop]: Abstraction has 956 states and 1177 transitions. [2019-10-13 23:15:40,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1177 transitions. [2019-10-13 23:15:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 23:15:40,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:40,565 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:15:40,565 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:40,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1180956023, now seen corresponding path program 1 times [2019-10-13 23:15:40,566 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:40,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203730953] [2019-10-13 23:15:40,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:40,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:40,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:15:40,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203730953] [2019-10-13 23:15:40,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855236726] [2019-10-13 23:15:40,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:41,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:15:41,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:15:41,326 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:41,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:41,571 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:15:41,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [431419009] [2019-10-13 23:15:41,798 INFO L162 IcfgInterpreter]: Started Sifa with 97 locations of interest [2019-10-13 23:15:41,800 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:15:41,807 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:15:41,826 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:15:41,827 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:15:51,823 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:15:53,513 WARN L191 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:15:53,675 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:15:53,824 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:15:53,958 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:15:54,262 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:54,509 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:54,721 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:54,908 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:55,299 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:15:55,474 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:55,717 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:55,885 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:56,015 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:56,181 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:56,195 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:15:56,524 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:15:56,526 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 548 for LOIs [2019-10-13 23:15:56,657 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:56,780 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:56,948 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:57,103 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:57,210 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:57,355 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:57,476 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:57,592 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:57,764 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:58,012 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 548 [2019-10-13 23:15:58,114 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:58,253 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:58,401 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:58,504 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:58,676 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:58,781 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:58,884 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:59,021 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,170 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:59,291 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:59,417 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,520 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:59,642 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:59,768 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,871 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:15:59,995 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:00,122 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,224 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:00,328 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:00,456 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,558 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:00,664 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:00,826 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,929 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:01,033 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:01,162 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:01,263 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:01,372 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:01,496 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:01,696 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:01,812 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:01,938 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:02,150 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:02,269 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:02,402 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:02,517 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:02,657 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:02,798 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:02,948 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:03,066 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:03,196 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:03,534 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:03,651 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:03,795 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:04,006 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:04,130 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:04,255 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:04,389 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:04,505 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:04,636 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:04,754 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:04,893 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:05,047 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:05,181 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:05,299 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:05,575 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:05,998 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:16:06,113 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:06,253 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:06,369 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:06,492 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:06,623 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:06,917 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:07,038 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:07,189 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:07,423 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:07,539 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:07,689 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:07,817 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:07,933 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:08,057 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:08,292 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:08,410 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:08,549 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:08,673 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:08,803 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:08,948 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:09,068 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:09,185 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:09,312 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:09,523 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:09,639 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:09,811 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:10,021 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:16:10,138 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:10,289 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:10,509 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:10,623 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:10,749 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:10,983 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:11,098 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,224 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,338 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,454 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,582 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,808 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:11,922 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,052 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,259 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:12,375 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,505 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,619 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,746 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,875 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:13,103 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:13,218 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:13,389 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:13,514 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:13,631 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:13,761 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:13,961 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:14,076 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:14,204 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:14,438 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:14,562 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 566