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 -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:38:13,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:38:13,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:38:13,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:38:13,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:38:13,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:38:13,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:38:13,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:38:13,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:38:13,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:38:13,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:38:13,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:38:13,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:38:13,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:38:13,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:38:13,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:38:13,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:38:13,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:38:13,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:38:13,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:38:13,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:38:13,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:38:13,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:38:13,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:38:13,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:38:13,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:38:13,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:38:13,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:38:13,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:38:13,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:38:13,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:38:13,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:38:13,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:38:13,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:38:13,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:38:13,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:38:13,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:38:13,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:38:13,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:38:13,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:38:13,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:38:13,388 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 19:38:13,411 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:38:13,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:38:13,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:38:13,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:38:13,414 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:38:13,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:38:13,415 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:38:13,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:38:13,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:38:13,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:38:13,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:38:13,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:38:13,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:38:13,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:38:13,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:38:13,418 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:38:13,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:38:13,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:38:13,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:38:13,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:38:13,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:38:13,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:38:13,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:38:13,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:38:13,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:38:13,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:38:13,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:38:13,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:38:13,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:38:13,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:38:13,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:38:13,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:38:13,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:38:13,716 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:38:13,717 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c [2019-10-13 19:38:13,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7bbed9b/97c6f44375294b7aa681069f72b8a3ef/FLAGa257ac23b [2019-10-13 19:38:14,388 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:38:14,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c [2019-10-13 19:38:14,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7bbed9b/97c6f44375294b7aa681069f72b8a3ef/FLAGa257ac23b [2019-10-13 19:38:14,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7bbed9b/97c6f44375294b7aa681069f72b8a3ef [2019-10-13 19:38:14,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:38:14,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:38:14,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:38:14,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:38:14,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:38:14,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:14" (1/1) ... [2019-10-13 19:38:14,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13280a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:14, skipping insertion in model container [2019-10-13 19:38:14,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:14" (1/1) ... [2019-10-13 19:38:14,762 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:38:14,812 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:38:15,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:38:15,273 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:38:15,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:38:15,439 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:38:15,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15 WrapperNode [2019-10-13 19:38:15,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:38:15,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:38:15,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:38:15,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:38:15,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (1/1) ... [2019-10-13 19:38:15,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:38:15,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:38:15,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:38:15,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:38:15,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (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 19:38:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:38:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:38:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:38:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:38:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:38:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:38:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:38:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:38:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:38:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:38:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:38:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:38:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:38:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:38:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:38:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:38:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:38:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:38:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:38:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:38:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:38:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:38:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:38:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:38:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:38:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:38:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:38:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:38:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:38:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:38:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:38:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:38:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:38:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:38:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:38:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:38:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:38:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:38:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:38:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:38:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:38:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:38:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:38:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:38:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:38:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:38:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:38:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:38:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:38:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:38:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:38:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:38:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:38:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:38:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:38:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:38:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:38:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:38:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:38:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:38:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:38:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:38:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:38:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:38:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:38:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:38:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:38:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:38:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:38:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:38:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:38:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:38:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:38:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:38:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:38:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:38:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:38:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:38:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:38:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:38:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:38:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:38:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:38:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:38:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:38:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:38:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:38:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:38:16,882 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:38:16,883 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:38:16,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:16 BoogieIcfgContainer [2019-10-13 19:38:16,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:38:16,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:38:16,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:38:16,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:38:16,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:14" (1/3) ... [2019-10-13 19:38:16,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668526a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:16, skipping insertion in model container [2019-10-13 19:38:16,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:15" (2/3) ... [2019-10-13 19:38:16,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668526a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:16, skipping insertion in model container [2019-10-13 19:38:16,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:16" (3/3) ... [2019-10-13 19:38:16,895 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2019-10-13 19:38:16,905 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:38:16,916 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:38:16,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:38:16,960 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:38:16,961 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:38:16,961 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:38:16,961 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:38:16,961 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:38:16,961 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:38:16,962 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:38:16,962 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:38:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-10-13 19:38:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:38:16,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:16,998 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] [2019-10-13 19:38:17,000 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1940108659, now seen corresponding path program 1 times [2019-10-13 19:38:17,015 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:17,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331046020] [2019-10-13 19:38:17,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:17,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:17,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,711 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:17,835 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 19:38:17,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331046020] [2019-10-13 19:38:17,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:17,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:38:17,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535020668] [2019-10-13 19:38:17,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:38:17,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:17,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:38:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:38:17,863 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2019-10-13 19:38:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:19,241 INFO L93 Difference]: Finished difference Result 366 states and 475 transitions. [2019-10-13 19:38:19,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:38:19,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:38:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:19,259 INFO L225 Difference]: With dead ends: 366 [2019-10-13 19:38:19,259 INFO L226 Difference]: Without dead ends: 197 [2019-10-13 19:38:19,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:38:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-13 19:38:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 160. [2019-10-13 19:38:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-10-13 19:38:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2019-10-13 19:38:19,396 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 52 [2019-10-13 19:38:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:19,397 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2019-10-13 19:38:19,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:38:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2019-10-13 19:38:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:38:19,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:19,409 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] [2019-10-13 19:38:19,409 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1389083153, now seen corresponding path program 1 times [2019-10-13 19:38:19,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:19,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666676482] [2019-10-13 19:38:19,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:19,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:19,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,771 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,810 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 19:38:19,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666676482] [2019-10-13 19:38:19,811 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:19,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:38:19,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294458736] [2019-10-13 19:38:19,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:38:19,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:19,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:38:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:38:19,814 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 4 states. [2019-10-13 19:38:20,279 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:21,454 INFO L93 Difference]: Finished difference Result 295 states and 362 transitions. [2019-10-13 19:38:21,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:38:21,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:38:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:21,460 INFO L225 Difference]: With dead ends: 295 [2019-10-13 19:38:21,460 INFO L226 Difference]: Without dead ends: 181 [2019-10-13 19:38:21,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:38:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-13 19:38:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 151. [2019-10-13 19:38:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-10-13 19:38:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2019-10-13 19:38:21,507 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 53 [2019-10-13 19:38:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:21,507 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2019-10-13 19:38:21,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:38:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2019-10-13 19:38:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:38:21,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:21,510 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 19:38:21,510 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1857519430, now seen corresponding path program 1 times [2019-10-13 19:38:21,511 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:21,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450599992] [2019-10-13 19:38:21,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:21,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:21,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,874 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,972 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 19:38:21,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450599992] [2019-10-13 19:38:21,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:21,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:21,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388344754] [2019-10-13 19:38:21,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:21,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:21,975 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 8 states. [2019-10-13 19:38:22,456 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:22,842 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:23,137 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:23,405 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:25,115 INFO L93 Difference]: Finished difference Result 308 states and 380 transitions. [2019-10-13 19:38:25,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:25,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:38:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:25,120 INFO L225 Difference]: With dead ends: 308 [2019-10-13 19:38:25,121 INFO L226 Difference]: Without dead ends: 181 [2019-10-13 19:38:25,122 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-13 19:38:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 151. [2019-10-13 19:38:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-10-13 19:38:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 177 transitions. [2019-10-13 19:38:25,164 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 177 transitions. Word has length 58 [2019-10-13 19:38:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:25,165 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 177 transitions. [2019-10-13 19:38:25,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 177 transitions. [2019-10-13 19:38:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-13 19:38:25,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:25,167 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] [2019-10-13 19:38:25,167 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:25,168 INFO L82 PathProgramCache]: Analyzing trace with hash -891726999, now seen corresponding path program 1 times [2019-10-13 19:38:25,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:25,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632108134] [2019-10-13 19:38:25,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:25,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:25,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,528 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,624 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 19:38:25,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632108134] [2019-10-13 19:38:25,624 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:25,625 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:38:25,625 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691320796] [2019-10-13 19:38:25,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:38:25,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:25,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:38:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:38:25,627 INFO L87 Difference]: Start difference. First operand 151 states and 177 transitions. Second operand 6 states. [2019-10-13 19:38:25,987 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:27,354 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:28,407 INFO L93 Difference]: Finished difference Result 428 states and 528 transitions. [2019-10-13 19:38:28,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:38:28,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2019-10-13 19:38:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:28,411 INFO L225 Difference]: With dead ends: 428 [2019-10-13 19:38:28,411 INFO L226 Difference]: Without dead ends: 301 [2019-10-13 19:38:28,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:38:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-13 19:38:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2019-10-13 19:38:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2019-10-13 19:38:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 293 transitions. [2019-10-13 19:38:28,472 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 293 transitions. Word has length 76 [2019-10-13 19:38:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:28,473 INFO L462 AbstractCegarLoop]: Abstraction has 258 states and 293 transitions. [2019-10-13 19:38:28,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 293 transitions. [2019-10-13 19:38:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 19:38:28,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:28,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:28,475 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:28,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:28,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1078240077, now seen corresponding path program 1 times [2019-10-13 19:38:28,476 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:28,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595273544] [2019-10-13 19:38:28,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:28,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:28,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,791 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,915 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 19:38:28,915 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595273544] [2019-10-13 19:38:28,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:28,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:28,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419079222] [2019-10-13 19:38:28,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:28,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:28,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:28,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:28,919 INFO L87 Difference]: Start difference. First operand 258 states and 293 transitions. Second operand 8 states. [2019-10-13 19:38:29,368 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:31,124 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:31,481 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:31,753 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:32,018 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:32,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:32,990 INFO L93 Difference]: Finished difference Result 683 states and 839 transitions. [2019-10-13 19:38:32,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:32,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2019-10-13 19:38:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:32,995 INFO L225 Difference]: With dead ends: 683 [2019-10-13 19:38:32,995 INFO L226 Difference]: Without dead ends: 449 [2019-10-13 19:38:32,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-10-13 19:38:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 406. [2019-10-13 19:38:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-10-13 19:38:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 468 transitions. [2019-10-13 19:38:33,102 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 468 transitions. Word has length 90 [2019-10-13 19:38:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:33,103 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 468 transitions. [2019-10-13 19:38:33,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 468 transitions. [2019-10-13 19:38:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 19:38:33,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:33,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:33,105 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2043608601, now seen corresponding path program 1 times [2019-10-13 19:38:33,106 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:33,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434964337] [2019-10-13 19:38:33,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:33,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:33,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,440 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,580 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 19:38:33,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434964337] [2019-10-13 19:38:33,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:33,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:33,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486428381] [2019-10-13 19:38:33,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:33,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:33,583 INFO L87 Difference]: Start difference. First operand 406 states and 468 transitions. Second operand 10 states. [2019-10-13 19:38:34,080 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:35,926 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:36,218 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:36,483 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:36,760 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:37,123 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:38,766 INFO L93 Difference]: Finished difference Result 931 states and 1161 transitions. [2019-10-13 19:38:38,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:38,766 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-13 19:38:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:38,773 INFO L225 Difference]: With dead ends: 931 [2019-10-13 19:38:38,773 INFO L226 Difference]: Without dead ends: 686 [2019-10-13 19:38:38,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-10-13 19:38:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 614. [2019-10-13 19:38:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-13 19:38:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 719 transitions. [2019-10-13 19:38:38,906 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 719 transitions. Word has length 94 [2019-10-13 19:38:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:38,907 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 719 transitions. [2019-10-13 19:38:38,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 719 transitions. [2019-10-13 19:38:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 19:38:38,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:38,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:38,909 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:38,910 INFO L82 PathProgramCache]: Analyzing trace with hash 315698408, now seen corresponding path program 1 times [2019-10-13 19:38:38,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:38,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571267960] [2019-10-13 19:38:38,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:38,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:38,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,190 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,322 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 19:38:39,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571267960] [2019-10-13 19:38:39,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:39,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:39,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079850647] [2019-10-13 19:38:39,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:39,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:39,325 INFO L87 Difference]: Start difference. First operand 614 states and 719 transitions. Second operand 8 states. [2019-10-13 19:38:40,413 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:40,690 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:40,976 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:42,513 INFO L93 Difference]: Finished difference Result 1131 states and 1374 transitions. [2019-10-13 19:38:42,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:42,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2019-10-13 19:38:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:42,523 INFO L225 Difference]: With dead ends: 1131 [2019-10-13 19:38:42,523 INFO L226 Difference]: Without dead ends: 674 [2019-10-13 19:38:42,525 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-13 19:38:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 614. [2019-10-13 19:38:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-13 19:38:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 718 transitions. [2019-10-13 19:38:42,658 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 718 transitions. Word has length 94 [2019-10-13 19:38:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:42,659 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 718 transitions. [2019-10-13 19:38:42,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 718 transitions. [2019-10-13 19:38:42,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 19:38:42,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:42,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:42,664 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:42,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash 975229930, now seen corresponding path program 1 times [2019-10-13 19:38:42,665 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:42,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832563996] [2019-10-13 19:38:42,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:42,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:42,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,982 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:43,138 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 19:38:43,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832563996] [2019-10-13 19:38:43,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:43,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:43,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683231641] [2019-10-13 19:38:43,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:43,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:43,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:43,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:43,147 INFO L87 Difference]: Start difference. First operand 614 states and 718 transitions. Second operand 12 states. [2019-10-13 19:38:44,168 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:44,442 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:44,700 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:45,566 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:45,843 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:46,208 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:46,482 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:48,212 INFO L93 Difference]: Finished difference Result 1275 states and 1558 transitions. [2019-10-13 19:38:48,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:48,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2019-10-13 19:38:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:48,218 INFO L225 Difference]: With dead ends: 1275 [2019-10-13 19:38:48,219 INFO L226 Difference]: Without dead ends: 685 [2019-10-13 19:38:48,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-13 19:38:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 621. [2019-10-13 19:38:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 19:38:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 725 transitions. [2019-10-13 19:38:48,336 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 725 transitions. Word has length 94 [2019-10-13 19:38:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:48,336 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 725 transitions. [2019-10-13 19:38:48,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 725 transitions. [2019-10-13 19:38:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 19:38:48,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:48,341 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:48,341 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:48,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:48,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1765139220, now seen corresponding path program 1 times [2019-10-13 19:38:48,342 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:48,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289376884] [2019-10-13 19:38:48,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:48,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:48,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,745 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:49,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289376884] [2019-10-13 19:38:49,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100392967] [2019-10-13 19:38:49,032 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 19:38:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:49,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 19:38:49,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:49,478 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:38:49,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-13 19:38:49,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070560691] [2019-10-13 19:38:49,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:49,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:49,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:49,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:49,479 INFO L87 Difference]: Start difference. First operand 621 states and 725 transitions. Second operand 8 states. [2019-10-13 19:38:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:50,279 INFO L93 Difference]: Finished difference Result 1800 states and 2145 transitions. [2019-10-13 19:38:50,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:50,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2019-10-13 19:38:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:50,287 INFO L225 Difference]: With dead ends: 1800 [2019-10-13 19:38:50,288 INFO L226 Difference]: Without dead ends: 1203 [2019-10-13 19:38:50,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2019-10-13 19:38:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1200. [2019-10-13 19:38:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-13 19:38:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1404 transitions. [2019-10-13 19:38:50,506 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1404 transitions. Word has length 106 [2019-10-13 19:38:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:50,507 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1404 transitions. [2019-10-13 19:38:50,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1404 transitions. [2019-10-13 19:38:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 19:38:50,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:50,510 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:50,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:50,725 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1984669840, now seen corresponding path program 1 times [2019-10-13 19:38:50,725 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:50,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729405052] [2019-10-13 19:38:50,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:50,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:50,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,093 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:51,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729405052] [2019-10-13 19:38:51,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:51,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 19:38:51,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576740750] [2019-10-13 19:38:51,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:38:51,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:38:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:51,254 INFO L87 Difference]: Start difference. First operand 1200 states and 1404 transitions. Second operand 14 states. [2019-10-13 19:38:52,166 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:52,473 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187