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_spec4_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:39:47,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:39:47,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:39:47,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:39:47,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:39:47,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:39:47,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:39:47,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:39:47,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:39:47,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:39:47,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:39:47,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:39:47,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:39:47,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:39:47,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:39:47,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:39:47,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:39:47,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:39:47,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:39:47,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:39:47,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:39:47,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:39:47,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:39:47,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:39:47,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:39:47,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:39:47,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:39:47,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:39:47,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:39:47,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:39:47,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:39:47,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:39:47,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:39:47,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:39:47,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:39:47,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:39:47,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:39:47,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:39:47,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:39:47,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:39:47,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:39:47,518 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 19:39:47,533 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:39:47,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:39:47,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:39:47,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:39:47,535 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:39:47,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:39:47,535 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:39:47,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:39:47,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:39:47,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:39:47,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:39:47,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:39:47,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:39:47,536 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:39:47,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:39:47,537 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:39:47,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:39:47,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:39:47,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:39:47,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:39:47,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:39:47,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:47,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:39:47,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:39:47,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:39:47,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:39:47,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:39:47,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:39:47,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:39:47,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:39:47,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:39:47,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:39:47,888 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:39:47,889 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:39:47,889 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-10-13 19:39:47,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79770851/9e88e604a3444f86be9e16a25d669f94/FLAGb70866f18 [2019-10-13 19:39:48,518 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:39:48,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-10-13 19:39:48,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79770851/9e88e604a3444f86be9e16a25d669f94/FLAGb70866f18 [2019-10-13 19:39:48,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79770851/9e88e604a3444f86be9e16a25d669f94 [2019-10-13 19:39:48,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:39:48,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:39:48,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:48,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:39:48,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:39:48,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d974c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:48, skipping insertion in model container [2019-10-13 19:39:48,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:48" (1/1) ... [2019-10-13 19:39:48,859 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:39:48,918 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:39:49,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:49,411 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:39:49,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:49,538 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:39:49,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49 WrapperNode [2019-10-13 19:39:49,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:49,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:39:49,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:39:49,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:39:49,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (1/1) ... [2019-10-13 19:39:49,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:39:49,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:39:49,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:39:49,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:39:49,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (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 19:39:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:39:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:39:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:39:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:39:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:39:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 19:39:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:39:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:39:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:39:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:39:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:39:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:39:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:39:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:39:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:39:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:39:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:39:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:39:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 19:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:39:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:39:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:39:50,784 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:39:50,785 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:39:50,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:50 BoogieIcfgContainer [2019-10-13 19:39:50,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:39:50,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:39:50,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:39:50,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:39:50,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:48" (1/3) ... [2019-10-13 19:39:50,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e28ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:50, skipping insertion in model container [2019-10-13 19:39:50,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:49" (2/3) ... [2019-10-13 19:39:50,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e28ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:50, skipping insertion in model container [2019-10-13 19:39:50,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:50" (3/3) ... [2019-10-13 19:39:50,795 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2019-10-13 19:39:50,805 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:39:50,814 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:39:50,825 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:39:50,852 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:39:50,853 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:39:50,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:39:50,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:39:50,853 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:39:50,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:39:50,854 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:39:50,854 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:39:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2019-10-13 19:39:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:39:50,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:50,890 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:50,892 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1116469353, now seen corresponding path program 1 times [2019-10-13 19:39:50,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:50,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320889209] [2019-10-13 19:39:50,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:50,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:50,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,629 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,753 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 19:39:51,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320889209] [2019-10-13 19:39:51,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:51,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:39:51,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553367764] [2019-10-13 19:39:51,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:39:51,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:51,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:39:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:51,789 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 3 states. [2019-10-13 19:39:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:53,100 INFO L93 Difference]: Finished difference Result 349 states and 454 transitions. [2019-10-13 19:39:53,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:39:53,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:39:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:53,117 INFO L225 Difference]: With dead ends: 349 [2019-10-13 19:39:53,117 INFO L226 Difference]: Without dead ends: 188 [2019-10-13 19:39:53,122 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-10-13 19:39:53,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 152. [2019-10-13 19:39:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-10-13 19:39:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2019-10-13 19:39:53,253 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 46 [2019-10-13 19:39:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:53,255 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2019-10-13 19:39:53,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:39:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2019-10-13 19:39:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:39:53,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:53,267 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:53,267 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1310027705, now seen corresponding path program 1 times [2019-10-13 19:39:53,268 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:53,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337128184] [2019-10-13 19:39:53,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:53,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:53,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,712 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:53,747 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 19:39:53,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337128184] [2019-10-13 19:39:53,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:53,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:39:53,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016790449] [2019-10-13 19:39:53,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:39:53,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:53,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:39:53,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:39:53,751 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2019-10-13 19:39:54,251 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:55,290 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2019-10-13 19:39:55,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:39:55,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:39:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:55,293 INFO L225 Difference]: With dead ends: 276 [2019-10-13 19:39:55,293 INFO L226 Difference]: Without dead ends: 172 [2019-10-13 19:39:55,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:39:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-13 19:39:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 143. [2019-10-13 19:39:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-10-13 19:39:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-10-13 19:39:55,336 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2019-10-13 19:39:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:55,336 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-10-13 19:39:55,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:39:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-10-13 19:39:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:39:55,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:55,339 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:55,339 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2059448103, now seen corresponding path program 1 times [2019-10-13 19:39:55,340 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:55,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778611118] [2019-10-13 19:39:55,340 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:55,340 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:55,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,680 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:55,755 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 19:39:55,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778611118] [2019-10-13 19:39:55,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:55,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:39:55,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780151447] [2019-10-13 19:39:55,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:39:55,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:39:55,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:39:55,758 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 8 states. [2019-10-13 19:39:56,205 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:56,548 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:56,868 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:57,120 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:57,974 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:00,326 INFO L93 Difference]: Finished difference Result 485 states and 602 transitions. [2019-10-13 19:40:00,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:40:00,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:40:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:00,332 INFO L225 Difference]: With dead ends: 485 [2019-10-13 19:40:00,332 INFO L226 Difference]: Without dead ends: 366 [2019-10-13 19:40:00,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:40:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-13 19:40:00,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 304. [2019-10-13 19:40:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-10-13 19:40:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2019-10-13 19:40:00,413 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 51 [2019-10-13 19:40:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:00,414 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2019-10-13 19:40:00,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2019-10-13 19:40:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:40:00,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:00,416 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] [2019-10-13 19:40:00,416 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash -535477179, now seen corresponding path program 1 times [2019-10-13 19:40:00,417 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:00,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108475911] [2019-10-13 19:40:00,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,787 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,891 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 19:40:00,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108475911] [2019-10-13 19:40:00,892 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:00,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:00,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506580200] [2019-10-13 19:40:00,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:00,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:00,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:00,894 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 12 states. [2019-10-13 19:40:01,446 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:01,783 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:02,069 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:02,356 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:02,978 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:03,922 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:04,407 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:04,779 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:05,049 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:05,377 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:05,837 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:06,253 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:06,714 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:09,054 INFO L93 Difference]: Finished difference Result 1237 states and 1698 transitions. [2019-10-13 19:40:09,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:09,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-13 19:40:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:09,066 INFO L225 Difference]: With dead ends: 1237 [2019-10-13 19:40:09,066 INFO L226 Difference]: Without dead ends: 957 [2019-10-13 19:40:09,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2019-10-13 19:40:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 860. [2019-10-13 19:40:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-10-13 19:40:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1102 transitions. [2019-10-13 19:40:09,326 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1102 transitions. Word has length 57 [2019-10-13 19:40:09,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:09,327 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 1102 transitions. [2019-10-13 19:40:09,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:09,328 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1102 transitions. [2019-10-13 19:40:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:40:09,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:09,335 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] [2019-10-13 19:40:09,336 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1450049621, now seen corresponding path program 1 times [2019-10-13 19:40:09,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:09,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080180424] [2019-10-13 19:40:09,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:09,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:09,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,741 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,802 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 19:40:09,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080180424] [2019-10-13 19:40:09,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:09,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:09,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104395436] [2019-10-13 19:40:09,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:09,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:09,804 INFO L87 Difference]: Start difference. First operand 860 states and 1102 transitions. Second operand 6 states. [2019-10-13 19:40:10,212 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:12,255 INFO L93 Difference]: Finished difference Result 2013 states and 2775 transitions. [2019-10-13 19:40:12,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:40:12,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-13 19:40:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:12,266 INFO L225 Difference]: With dead ends: 2013 [2019-10-13 19:40:12,267 INFO L226 Difference]: Without dead ends: 1177 [2019-10-13 19:40:12,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2019-10-13 19:40:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1090. [2019-10-13 19:40:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2019-10-13 19:40:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1378 transitions. [2019-10-13 19:40:12,505 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1378 transitions. Word has length 61 [2019-10-13 19:40:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:12,505 INFO L462 AbstractCegarLoop]: Abstraction has 1090 states and 1378 transitions. [2019-10-13 19:40:12,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1378 transitions. [2019-10-13 19:40:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:40:12,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:12,511 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:12,512 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:12,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2144996460, now seen corresponding path program 1 times [2019-10-13 19:40:12,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:12,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126794560] [2019-10-13 19:40:12,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:12,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:12,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,866 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:12,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126794560] [2019-10-13 19:40:12,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343923098] [2019-10-13 19:40:12,982 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 19:40:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:13,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:40:13,362 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:13,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-13 19:40:13,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834868858] [2019-10-13 19:40:13,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 19:40:13,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:13,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 19:40:13,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:13,365 INFO L87 Difference]: Start difference. First operand 1090 states and 1378 transitions. Second operand 15 states. [2019-10-13 19:40:14,061 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:14,837 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:15,779 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:17,102 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:17,458 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:19,057 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:19,355 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:19,967 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:20,986 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:21,455 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:21,764 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:22,073 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:22,484 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:22,837 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:23,437 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:23,896 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:24,159 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:24,551 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:25,030 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:25,553 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:25,856 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:26,180 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:26,874 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:27,209 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:27,476 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:27,911 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:28,211 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189