/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 -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_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:36:33,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:36:33,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:36:33,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:36:33,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:36:33,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:36:33,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:36:33,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:36:33,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:36:33,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:36:33,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:36:33,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:36:33,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:36:34,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:36:34,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:36:34,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:36:34,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:36:34,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:36:34,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:36:34,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:36:34,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:36:34,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:36:34,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:36:34,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:36:34,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:36:34,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:36:34,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:36:34,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:36:34,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:36:34,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:36:34,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:36:34,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:36:34,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:36:34,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:36:34,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:36:34,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:36:34,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:36:34,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:36:34,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:36:34,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:36:34,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:36:34,037 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 [2019-11-07 04:36:34,052 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:36:34,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:36:34,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:36:34,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:36:34,056 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:36:34,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:36:34,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:36:34,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:36:34,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:36:34,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:36:34,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:36:34,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:36:34,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:36:34,058 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:36:34,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:36:34,058 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:36:34,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:36:34,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:36:34,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:36:34,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:36:34,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:36:34,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:36:34,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:36:34,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:36:34,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:36:34,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:36:34,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:36:34,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:36:34,062 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 [2019-11-07 04:36:34,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:36:34,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:36:34,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:36:34,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:36:34,414 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:36:34,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-11-07 04:36:34,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213b0c868/1d9dc7f15cf54a9780446bb55ea10fdb/FLAGf1cee0f20 [2019-11-07 04:36:35,020 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:36:35,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-11-07 04:36:35,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213b0c868/1d9dc7f15cf54a9780446bb55ea10fdb/FLAGf1cee0f20 [2019-11-07 04:36:35,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213b0c868/1d9dc7f15cf54a9780446bb55ea10fdb [2019-11-07 04:36:35,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:36:35,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:36:35,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:36:35,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:36:35,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:36:35,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:36:35" (1/1) ... [2019-11-07 04:36:35,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@765fe0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:35, skipping insertion in model container [2019-11-07 04:36:35,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:36:35" (1/1) ... [2019-11-07 04:36:35,541 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:36:35,658 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:36:36,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:36:36,176 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:36:36,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:36:36,299 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:36:36,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36 WrapperNode [2019-11-07 04:36:36,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:36:36,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:36:36,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:36:36,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:36:36,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (1/1) ... [2019-11-07 04:36:36,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:36:36,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:36:36,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:36:36,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:36:36,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (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 [2019-11-07 04:36:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:36:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:36:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:36:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:36:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:36:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:36:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:36:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:36:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:36:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:36:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:36:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:36:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:36:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:36:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:36:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:36:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:36:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:36:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:36:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:36:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:36:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:36:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:36:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-07 04:36:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:36:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:36:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:36:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:36:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:36:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:36:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:36:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:36:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:36:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:36:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:36:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:36:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:36:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:36:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:36:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:36:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:36:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:36:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:36:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:36:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:36:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:36:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:36:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:36:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:36:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:36:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:36:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:36:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:36:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:36:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:36:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:36:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:36:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:36:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:36:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:36:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:36:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:36:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:36:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:36:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:36:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:36:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:36:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:36:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-07 04:36:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:36:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:36:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:36:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:36:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:36:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:36:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:36:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:36:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:36:38,160 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:36:38,160 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:36:38,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:36:38 BoogieIcfgContainer [2019-11-07 04:36:38,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:36:38,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:36:38,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:36:38,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:36:38,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:36:35" (1/3) ... [2019-11-07 04:36:38,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ea7368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:36:38, skipping insertion in model container [2019-11-07 04:36:38,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:36:36" (2/3) ... [2019-11-07 04:36:38,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ea7368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:36:38, skipping insertion in model container [2019-11-07 04:36:38,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:36:38" (3/3) ... [2019-11-07 04:36:38,174 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2019-11-07 04:36:38,186 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:36:38,196 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:36:38,209 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:36:38,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:36:38,250 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:36:38,251 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:36:38,251 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:36:38,251 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:36:38,252 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:36:38,253 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:36:38,255 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:36:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-11-07 04:36:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-07 04:36:38,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:38,303 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:36:38,305 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2004867032, now seen corresponding path program 1 times [2019-11-07 04:36:38,324 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:38,328 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739965664] [2019-11-07 04:36:38,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:36:38,689 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739965664] [2019-11-07 04:36:38,690 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:38,691 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:36:38,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497444331] [2019-11-07 04:36:38,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:36:38,699 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:38,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:36:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:36:38,725 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-11-07 04:36:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:38,792 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2019-11-07 04:36:38,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:36:38,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-11-07 04:36:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:38,814 INFO L225 Difference]: With dead ends: 264 [2019-11-07 04:36:38,814 INFO L226 Difference]: Without dead ends: 134 [2019-11-07 04:36:38,824 INFO L630 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 [2019-11-07 04:36:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-11-07 04:36:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-11-07 04:36:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-07 04:36:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2019-11-07 04:36:38,885 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 52 [2019-11-07 04:36:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:38,885 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2019-11-07 04:36:38,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:36:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2019-11-07 04:36:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-07 04:36:38,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:38,890 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:36:38,891 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1132766157, now seen corresponding path program 1 times [2019-11-07 04:36:38,892 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:38,892 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198284581] [2019-11-07 04:36:38,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:36:39,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198284581] [2019-11-07 04:36:39,093 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:39,094 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:36:39,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146311299] [2019-11-07 04:36:39,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:36:39,096 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:36:39,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:36:39,097 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 3 states. [2019-11-07 04:36:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:39,148 INFO L93 Difference]: Finished difference Result 218 states and 253 transitions. [2019-11-07 04:36:39,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:36:39,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-07 04:36:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:39,157 INFO L225 Difference]: With dead ends: 218 [2019-11-07 04:36:39,157 INFO L226 Difference]: Without dead ends: 126 [2019-11-07 04:36:39,159 INFO L630 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 [2019-11-07 04:36:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-07 04:36:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-11-07 04:36:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-07 04:36:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2019-11-07 04:36:39,217 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 53 [2019-11-07 04:36:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:39,218 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2019-11-07 04:36:39,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:36:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2019-11-07 04:36:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 04:36:39,220 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:39,220 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:36:39,221 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:39,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2144150323, now seen corresponding path program 1 times [2019-11-07 04:36:39,221 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:39,221 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006434414] [2019-11-07 04:36:39,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:36:39,353 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006434414] [2019-11-07 04:36:39,353 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:39,353 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:36:39,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908326164] [2019-11-07 04:36:39,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:36:39,354 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:36:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:36:39,355 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 7 states. [2019-11-07 04:36:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:39,663 INFO L93 Difference]: Finished difference Result 227 states and 264 transitions. [2019-11-07 04:36:39,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:36:39,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-07 04:36:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:39,668 INFO L225 Difference]: With dead ends: 227 [2019-11-07 04:36:39,668 INFO L226 Difference]: Without dead ends: 126 [2019-11-07 04:36:39,670 INFO L630 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 [2019-11-07 04:36:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-07 04:36:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-11-07 04:36:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-07 04:36:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2019-11-07 04:36:39,697 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 56 [2019-11-07 04:36:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:39,698 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2019-11-07 04:36:39,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:36:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2019-11-07 04:36:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:36:39,706 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:39,706 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:36:39,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash -654841893, now seen corresponding path program 1 times [2019-11-07 04:36:39,712 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:39,712 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314223629] [2019-11-07 04:36:39,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:36:39,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314223629] [2019-11-07 04:36:39,812 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:39,812 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:36:39,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637838426] [2019-11-07 04:36:39,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:36:39,813 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:39,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:36:39,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:36:39,814 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 5 states. [2019-11-07 04:36:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:40,341 INFO L93 Difference]: Finished difference Result 329 states and 392 transitions. [2019-11-07 04:36:40,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:36:40,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-11-07 04:36:40,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:40,345 INFO L225 Difference]: With dead ends: 329 [2019-11-07 04:36:40,345 INFO L226 Difference]: Without dead ends: 228 [2019-11-07 04:36:40,346 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:36:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-11-07 04:36:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2019-11-07 04:36:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-11-07 04:36:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 235 transitions. [2019-11-07 04:36:40,375 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 235 transitions. Word has length 73 [2019-11-07 04:36:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:40,376 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 235 transitions. [2019-11-07 04:36:40,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:36:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 235 transitions. [2019-11-07 04:36:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-07 04:36:40,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:40,378 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:36:40,378 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:40,379 INFO L82 PathProgramCache]: Analyzing trace with hash 133990115, now seen corresponding path program 1 times [2019-11-07 04:36:40,379 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:40,379 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28209780] [2019-11-07 04:36:40,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:36:40,584 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28209780] [2019-11-07 04:36:40,584 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:40,584 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:36:40,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126059550] [2019-11-07 04:36:40,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:36:40,585 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:40,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:36:40,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:36:40,586 INFO L87 Difference]: Start difference. First operand 211 states and 235 transitions. Second operand 12 states. [2019-11-07 04:36:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:41,511 INFO L93 Difference]: Finished difference Result 561 states and 642 transitions. [2019-11-07 04:36:41,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:36:41,512 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-11-07 04:36:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:41,516 INFO L225 Difference]: With dead ends: 561 [2019-11-07 04:36:41,516 INFO L226 Difference]: Without dead ends: 375 [2019-11-07 04:36:41,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:36:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-11-07 04:36:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 363. [2019-11-07 04:36:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-11-07 04:36:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 414 transitions. [2019-11-07 04:36:41,558 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 414 transitions. Word has length 83 [2019-11-07 04:36:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:41,559 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 414 transitions. [2019-11-07 04:36:41,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:36:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 414 transitions. [2019-11-07 04:36:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-07 04:36:41,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:41,564 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:36:41,564 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash -712728111, now seen corresponding path program 1 times [2019-11-07 04:36:41,565 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:41,566 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394131621] [2019-11-07 04:36:41,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:36:41,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394131621] [2019-11-07 04:36:41,717 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:41,718 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:36:41,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421467700] [2019-11-07 04:36:41,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:36:41,720 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:41,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:36:41,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:36:41,721 INFO L87 Difference]: Start difference. First operand 363 states and 414 transitions. Second operand 7 states. [2019-11-07 04:36:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:42,310 INFO L93 Difference]: Finished difference Result 729 states and 857 transitions. [2019-11-07 04:36:42,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:36:42,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2019-11-07 04:36:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:42,314 INFO L225 Difference]: With dead ends: 729 [2019-11-07 04:36:42,314 INFO L226 Difference]: Without dead ends: 391 [2019-11-07 04:36:42,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:36:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-11-07 04:36:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 360. [2019-11-07 04:36:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2019-11-07 04:36:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 405 transitions. [2019-11-07 04:36:42,347 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 405 transitions. Word has length 83 [2019-11-07 04:36:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:42,348 INFO L462 AbstractCegarLoop]: Abstraction has 360 states and 405 transitions. [2019-11-07 04:36:42,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:36:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 405 transitions. [2019-11-07 04:36:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-07 04:36:42,349 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:42,350 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:36:42,350 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:42,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1315543544, now seen corresponding path program 1 times [2019-11-07 04:36:42,350 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:42,351 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128809226] [2019-11-07 04:36:42,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:36:42,512 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128809226] [2019-11-07 04:36:42,512 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:36:42,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:36:42,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266237013] [2019-11-07 04:36:42,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:36:42,514 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:36:42,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:36:42,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:36:42,515 INFO L87 Difference]: Start difference. First operand 360 states and 405 transitions. Second operand 9 states. [2019-11-07 04:36:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:36:43,478 INFO L93 Difference]: Finished difference Result 1103 states and 1272 transitions. [2019-11-07 04:36:43,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:36:43,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2019-11-07 04:36:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:36:43,492 INFO L225 Difference]: With dead ends: 1103 [2019-11-07 04:36:43,492 INFO L226 Difference]: Without dead ends: 834 [2019-11-07 04:36:43,493 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:36:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2019-11-07 04:36:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 724. [2019-11-07 04:36:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-11-07 04:36:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 822 transitions. [2019-11-07 04:36:43,574 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 822 transitions. Word has length 86 [2019-11-07 04:36:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:36:43,574 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 822 transitions. [2019-11-07 04:36:43,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:36:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 822 transitions. [2019-11-07 04:36:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-07 04:36:43,580 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:36:43,580 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:36:43,580 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:36:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:36:43,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1528068328, now seen corresponding path program 1 times [2019-11-07 04:36:43,581 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:36:43,581 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355042768] [2019-11-07 04:36:43,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:36:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:36:43,764 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355042768] [2019-11-07 04:36:43,764 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380328528] [2019-11-07 04:36:43,765 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 [2019-11-07 04:36:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:36:43,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:36:44,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:36:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:36:44,237 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:36:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:36:44,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1732634536] [2019-11-07 04:36:44,735 INFO L159 IcfgInterpreter]: Started Sifa with 115 locations of interest [2019-11-07 04:36:44,735 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:36:44,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:36:44,751 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:36:44,752 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:36:55,320 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:36:57,094 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:36:57,216 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:57,390 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:57,542 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:57,843 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:36:57,962 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:58,070 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:58,245 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:36:58,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:36:58,266 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:36:58,484 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:58,600 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:58,752 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:58,885 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:59,000 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:59,126 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:59,368 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:59,501 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:59,642 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:59,753 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:59,917 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,072 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,213 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,418 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,586 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,701 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,822 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:00,943 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:01,084 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:01,204 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:01,317 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:01,440 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:01,589 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:01,948 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 566 [2019-11-07 04:37:02,060 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:37:02,200 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:37:02,424 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 566 [2019-11-07 04:37:02,540 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:37:02,661 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:37:02,855 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:37:02,966 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:37:03,127 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:37:03,261 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:37:03,390 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:37:03,559 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:37:03,578 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 548 for LOIs [2019-11-07 04:37:03,735 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:37:03,872 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:37:03,997 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:04,106 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:37:04,208 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:37:04,326 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:04,334 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:37:04,522 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:37:04,930 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:05,400 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:37:05,818 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:37:06,607 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 195 [2019-11-07 04:37:07,412 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-07 04:37:08,037 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 613 [2019-11-07 04:37:08,198 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 613 [2019-11-07 04:37:08,371 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 627 DAG size of output: 627 [2019-11-07 04:37:08,730 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 629 [2019-11-07 04:37:09,187 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 617 [2019-11-07 04:37:09,319 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 617 [2019-11-07 04:37:09,505 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 627 DAG size of output: 627 [2019-11-07 04:37:09,693 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 618 [2019-11-07 04:37:09,888 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 618 [2019-11-07 04:37:10,136 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 628 [2019-11-07 04:37:10,290 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 618 [2019-11-07 04:37:10,444 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 618 [2019-11-07 04:37:10,666 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 628 [2019-11-07 04:37:10,690 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 582 for LOIs [2019-11-07 04:37:10,705 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 151 for LOIs [2019-11-07 04:37:12,016 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 146 for LOIs [2019-11-07 04:37:12,020 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 144 for LOIs [2019-11-07 04:37:12,998 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 162 for LOIs [2019-11-07 04:37:14,105 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 146 for LOIs