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_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:39:09,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:39:09,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:39:09,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:39:09,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:39:09,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:39:09,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:39:09,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:39:09,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:39:09,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:39:09,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:39:09,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:39:09,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:39:09,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:39:09,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:39:09,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:39:09,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:39:09,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:39:09,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:39:09,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:39:09,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:39:09,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:39:09,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:39:09,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:39:09,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:39:09,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:39:09,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:39:09,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:39:09,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:39:09,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:39:09,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:39:09,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:39:09,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:39:09,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:39:09,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:39:09,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:39:09,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:39:09,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:39:09,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:39:09,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:39:09,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:39:09,630 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 [2019-10-14 23:39:09,645 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:39:09,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:39:09,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:39:09,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:39:09,647 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:39:09,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:39:09,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:39:09,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:39:09,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:39:09,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:39:09,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:39:09,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:39:09,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:39:09,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:39:09,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:39:09,649 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:39:09,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:39:09,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:39:09,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:39:09,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:39:09,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:39:09,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:39:09,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:39:09,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:39:09,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:39:09,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:39:09,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:39:09,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:39:09,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:39:09,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:39:09,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:39:09,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:39:09,965 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:39:09,965 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:39:09,966 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-10-14 23:39:10,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4834fd241/36c2d4db1b3843b4ac59175b580e7801/FLAGe78ed7f7d [2019-10-14 23:39:10,589 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:39:10,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-10-14 23:39:10,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4834fd241/36c2d4db1b3843b4ac59175b580e7801/FLAGe78ed7f7d [2019-10-14 23:39:10,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4834fd241/36c2d4db1b3843b4ac59175b580e7801 [2019-10-14 23:39:10,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:39:10,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:39:10,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:10,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:39:10,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:39:10,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:10" (1/1) ... [2019-10-14 23:39:10,895 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 14.10 11:39:10, skipping insertion in model container [2019-10-14 23:39:10,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:10" (1/1) ... [2019-10-14 23:39:10,902 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:39:10,944 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:39:11,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:11,424 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:39:11,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:11,539 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:39:11,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11 WrapperNode [2019-10-14 23:39:11,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:11,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:39:11,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:39:11,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:39:11,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (1/1) ... [2019-10-14 23:39:11,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:39:11,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:39:11,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:39:11,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:39:11,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (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 [2019-10-14 23:39:11,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:39:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:39:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:39:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:39:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:39:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:39:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:39:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:39:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:39:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:39:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:39:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:39:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:39:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:39:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:39:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:39:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:39:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:39:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:39:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:39:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:39:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:39:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:39:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:39:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:39:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:39:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:39:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:39:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:39:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:39:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:39:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:39:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:39:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:39:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:39:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:39:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:39:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:39:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:39:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:39:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:39:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:39:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:39:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:39:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:39:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:39:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:39:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:39:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:39:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:39:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:39:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:39:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:39:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:39:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:39:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:39:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:39:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:39:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:39:12,860 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:39:12,861 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:39:12,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:12 BoogieIcfgContainer [2019-10-14 23:39:12,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:39:12,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:39:12,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:39:12,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:39:12,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:39:10" (1/3) ... [2019-10-14 23:39:12,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a984011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:12, skipping insertion in model container [2019-10-14 23:39:12,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:11" (2/3) ... [2019-10-14 23:39:12,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a984011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:12, skipping insertion in model container [2019-10-14 23:39:12,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:12" (3/3) ... [2019-10-14 23:39:12,871 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2019-10-14 23:39:12,881 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:39:12,890 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:39:12,901 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:39:12,928 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:39:12,928 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:39:12,928 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:39:12,929 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:39:12,929 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:39:12,929 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:39:12,929 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:39:12,930 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:39:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-10-14 23:39:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:39:12,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:12,977 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] [2019-10-14 23:39:12,980 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:12,986 INFO L82 PathProgramCache]: Analyzing trace with hash -389891839, now seen corresponding path program 1 times [2019-10-14 23:39:12,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:12,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779191226] [2019-10-14 23:39:12,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:12,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:12,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,656 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:13,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779191226] [2019-10-14 23:39:13,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:13,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:39:13,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093709118] [2019-10-14 23:39:13,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:39:13,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:39:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:13,817 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2019-10-14 23:39:15,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:15,100 INFO L93 Difference]: Finished difference Result 351 states and 455 transitions. [2019-10-14 23:39:15,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:39:15,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:39:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:15,131 INFO L225 Difference]: With dead ends: 351 [2019-10-14 23:39:15,131 INFO L226 Difference]: Without dead ends: 189 [2019-10-14 23:39:15,140 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 [2019-10-14 23:39:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-10-14 23:39:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 153. [2019-10-14 23:39:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-14 23:39:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2019-10-14 23:39:15,274 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 46 [2019-10-14 23:39:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:15,275 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2019-10-14 23:39:15,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:39:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2019-10-14 23:39:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:39:15,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:15,287 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] [2019-10-14 23:39:15,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:15,288 INFO L82 PathProgramCache]: Analyzing trace with hash 999791911, now seen corresponding path program 1 times [2019-10-14 23:39:15,288 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:15,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184003923] [2019-10-14 23:39:15,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:15,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:15,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,714 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:15,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184003923] [2019-10-14 23:39:15,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:15,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:39:15,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103848491] [2019-10-14 23:39:15,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:39:15,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:15,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:39:15,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:39:15,753 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2019-10-14 23:39:16,242 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:17,354 INFO L93 Difference]: Finished difference Result 284 states and 346 transitions. [2019-10-14 23:39:17,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:17,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:39:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:17,360 INFO L225 Difference]: With dead ends: 284 [2019-10-14 23:39:17,360 INFO L226 Difference]: Without dead ends: 173 [2019-10-14 23:39:17,367 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 [2019-10-14 23:39:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-14 23:39:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2019-10-14 23:39:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-14 23:39:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-10-14 23:39:17,429 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 47 [2019-10-14 23:39:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:17,429 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-10-14 23:39:17,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:39:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-10-14 23:39:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:39:17,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:17,435 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] [2019-10-14 23:39:17,435 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:17,436 INFO L82 PathProgramCache]: Analyzing trace with hash -314490359, now seen corresponding path program 1 times [2019-10-14 23:39:17,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:17,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911819161] [2019-10-14 23:39:17,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:17,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:17,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,812 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:17,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911819161] [2019-10-14 23:39:17,921 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:17,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:39:17,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942628845] [2019-10-14 23:39:17,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:17,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:17,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:39:17,923 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2019-10-14 23:39:18,384 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:18,762 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:19,067 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:19,343 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:20,977 INFO L93 Difference]: Finished difference Result 293 states and 360 transitions. [2019-10-14 23:39:20,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:39:20,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-14 23:39:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:20,984 INFO L225 Difference]: With dead ends: 293 [2019-10-14 23:39:20,984 INFO L226 Difference]: Without dead ends: 173 [2019-10-14 23:39:20,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-14 23:39:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2019-10-14 23:39:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-14 23:39:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-10-14 23:39:21,040 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 51 [2019-10-14 23:39:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:21,040 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-10-14 23:39:21,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-10-14 23:39:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-14 23:39:21,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:21,042 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] [2019-10-14 23:39:21,043 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:21,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:21,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1957039538, now seen corresponding path program 1 times [2019-10-14 23:39:21,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:21,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79309777] [2019-10-14 23:39:21,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:21,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:21,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,373 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:21,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79309777] [2019-10-14 23:39:21,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:21,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:21,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692387962] [2019-10-14 23:39:21,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:21,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:21,477 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2019-10-14 23:39:21,929 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:23,322 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:24,153 INFO L93 Difference]: Finished difference Result 399 states and 490 transitions. [2019-10-14 23:39:24,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:24,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-10-14 23:39:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:24,158 INFO L225 Difference]: With dead ends: 399 [2019-10-14 23:39:24,158 INFO L226 Difference]: Without dead ends: 279 [2019-10-14 23:39:24,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-10-14 23:39:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 238. [2019-10-14 23:39:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-14 23:39:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 268 transitions. [2019-10-14 23:39:24,227 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 268 transitions. Word has length 69 [2019-10-14 23:39:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:24,228 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 268 transitions. [2019-10-14 23:39:24,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 268 transitions. [2019-10-14 23:39:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:39:24,229 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:24,230 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] [2019-10-14 23:39:24,230 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:24,230 INFO L82 PathProgramCache]: Analyzing trace with hash 868877799, now seen corresponding path program 1 times [2019-10-14 23:39:24,231 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:24,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938399998] [2019-10-14 23:39:24,231 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:24,231 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:24,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,566 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:24,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938399998] [2019-10-14 23:39:24,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:24,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:39:24,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342648956] [2019-10-14 23:39:24,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:39:24,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:24,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:39:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:24,692 INFO L87 Difference]: Start difference. First operand 238 states and 268 transitions. Second operand 12 states. [2019-10-14 23:39:25,353 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:25,739 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:26,031 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:26,289 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:26,898 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:28,070 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:28,403 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:28,739 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:29,027 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:29,353 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:29,663 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:31,232 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:31,681 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:32,681 INFO L93 Difference]: Finished difference Result 830 states and 1046 transitions. [2019-10-14 23:39:32,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:32,681 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-14 23:39:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:32,688 INFO L225 Difference]: With dead ends: 830 [2019-10-14 23:39:32,688 INFO L226 Difference]: Without dead ends: 616 [2019-10-14 23:39:32,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-14 23:39:32,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 558. [2019-10-14 23:39:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-14 23:39:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 648 transitions. [2019-10-14 23:39:32,796 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 648 transitions. Word has length 83 [2019-10-14 23:39:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:32,797 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 648 transitions. [2019-10-14 23:39:32,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 648 transitions. [2019-10-14 23:39:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:39:32,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:32,801 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:32,801 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:32,802 INFO L82 PathProgramCache]: Analyzing trace with hash -128505367, now seen corresponding path program 1 times [2019-10-14 23:39:32,802 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:32,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888347156] [2019-10-14 23:39:32,802 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:32,803 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:32,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,185 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-14 23:39:33,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888347156] [2019-10-14 23:39:33,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400692293] [2019-10-14 23:39:33,371 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 [2019-10-14 23:39:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:39:33,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:33,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:33,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-14 23:39:33,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353706632] [2019-10-14 23:39:33,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:33,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:33,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:39:33,847 INFO L87 Difference]: Start difference. First operand 558 states and 648 transitions. Second operand 8 states. [2019-10-14 23:39:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:35,323 INFO L93 Difference]: Finished difference Result 1396 states and 1790 transitions. [2019-10-14 23:39:35,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:39:35,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2019-10-14 23:39:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:35,331 INFO L225 Difference]: With dead ends: 1396 [2019-10-14 23:39:35,331 INFO L226 Difference]: Without dead ends: 986 [2019-10-14 23:39:35,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:39:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2019-10-14 23:39:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 912. [2019-10-14 23:39:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-14 23:39:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1107 transitions. [2019-10-14 23:39:35,508 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1107 transitions. Word has length 146 [2019-10-14 23:39:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:35,508 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1107 transitions. [2019-10-14 23:39:35,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1107 transitions. [2019-10-14 23:39:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:39:35,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:35,511 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:35,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:35,716 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:35,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1510920712, now seen corresponding path program 1 times [2019-10-14 23:39:35,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:35,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390511221] [2019-10-14 23:39:35,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:35,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:35,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,015 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:39:36,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390511221] [2019-10-14 23:39:36,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339135314] [2019-10-14 23:39:36,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:36,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:36,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:36,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-14 23:39:36,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508982090] [2019-10-14 23:39:36,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:36,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:36,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:36,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:39:36,465 INFO L87 Difference]: Start difference. First operand 912 states and 1107 transitions. Second operand 6 states. [2019-10-14 23:39:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:36,681 INFO L93 Difference]: Finished difference Result 1828 states and 2310 transitions. [2019-10-14 23:39:36,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:39:36,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-10-14 23:39:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:36,688 INFO L225 Difference]: With dead ends: 1828 [2019-10-14 23:39:36,688 INFO L226 Difference]: Without dead ends: 940 [2019-10-14 23:39:36,691 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2019-10-14 23:39:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 932. [2019-10-14 23:39:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-10-14 23:39:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1131 transitions. [2019-10-14 23:39:36,861 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1131 transitions. Word has length 146 [2019-10-14 23:39:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:36,862 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 1131 transitions. [2019-10-14 23:39:36,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1131 transitions. [2019-10-14 23:39:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:39:36,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:36,865 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:37,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:37,070 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:37,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1165071670, now seen corresponding path program 1 times [2019-10-14 23:39:37,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:37,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079613646] [2019-10-14 23:39:37,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:37,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:37,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,355 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:39:37,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079613646] [2019-10-14 23:39:37,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32664465] [2019-10-14 23:39:37,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:39:37,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:37,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:37,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-14 23:39:37,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907506156] [2019-10-14 23:39:37,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:39:37,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:37,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:39:37,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:37,939 INFO L87 Difference]: Start difference. First operand 932 states and 1131 transitions. Second operand 5 states. [2019-10-14 23:39:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:38,178 INFO L93 Difference]: Finished difference Result 1658 states and 2062 transitions. [2019-10-14 23:39:38,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:38,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-14 23:39:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:38,184 INFO L225 Difference]: With dead ends: 1658 [2019-10-14 23:39:38,184 INFO L226 Difference]: Without dead ends: 750 [2019-10-14 23:39:38,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-10-14 23:39:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-10-14 23:39:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-14 23:39:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 901 transitions. [2019-10-14 23:39:38,354 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 901 transitions. Word has length 146 [2019-10-14 23:39:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:38,355 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 901 transitions. [2019-10-14 23:39:38,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:39:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 901 transitions. [2019-10-14 23:39:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:39:38,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:38,357 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:38,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:38,562 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 667358703, now seen corresponding path program 1 times [2019-10-14 23:39:38,563 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:38,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056257606] [2019-10-14 23:39:38,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:38,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:38,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,902 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 23:39:39,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056257606] [2019-10-14 23:39:39,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210177575] [2019-10-14 23:39:39,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:39,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:39,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:39,676 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:39,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-10-14 23:39:39,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405814943] [2019-10-14 23:39:39,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-14 23:39:39,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:39,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-14 23:39:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:39:39,679 INFO L87 Difference]: Start difference. First operand 750 states and 901 transitions. Second operand 22 states. [2019-10-14 23:39:40,634 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:41,622 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:41,964 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:42,568 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:44,536 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:45,001 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:45,311 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:45,647 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:45,980 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:46,296 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:46,669 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:46,976 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:47,291 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:47,605 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191