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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:40:20,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:40:20,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:40:20,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:40:20,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:40:20,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:40:20,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:40:20,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:40:20,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:40:20,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:40:20,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:40:20,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:40:20,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:40:20,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:40:20,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:40:20,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:40:20,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:40:20,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:40:20,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:40:20,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:40:20,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:40:20,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:40:20,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:40:20,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:40:20,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:40:20,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:40:20,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:40:20,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:40:20,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:40:20,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:40:20,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:40:20,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:40:20,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:40:20,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:40:20,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:40:20,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:40:20,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:40:20,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:40:20,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:40:20,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:40:20,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:40:20,640 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 19:40:20,659 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:40:20,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:40:20,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:40:20,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:40:20,661 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:40:20,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:40:20,662 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:40:20,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:40:20,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:40:20,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:40:20,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:40:20,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:40:20,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:40:20,663 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:40:20,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:40:20,664 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:40:20,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:40:20,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:40:20,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:40:20,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:40:20,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:40:20,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:40:20,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:40:20,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:40:20,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:40:20,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:40:20,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:40:20,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:40:20,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:40:20,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:40:21,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:40:21,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:40:21,026 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:40:21,026 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:40:21,027 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-10-13 19:40:21,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3500f6cf2/8d74dfef9bb6441294513e031226104f/FLAGa5f65f3dd [2019-10-13 19:40:21,626 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:40:21,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-10-13 19:40:21,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3500f6cf2/8d74dfef9bb6441294513e031226104f/FLAGa5f65f3dd [2019-10-13 19:40:21,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3500f6cf2/8d74dfef9bb6441294513e031226104f [2019-10-13 19:40:21,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:40:21,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:40:21,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:21,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:40:21,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:40:21,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:21" (1/1) ... [2019-10-13 19:40:21,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a48b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:21, skipping insertion in model container [2019-10-13 19:40:21,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:21" (1/1) ... [2019-10-13 19:40:21,993 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:40:22,049 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:40:22,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:22,530 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:40:22,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:22,655 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:40:22,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22 WrapperNode [2019-10-13 19:40:22,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:22,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:40:22,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:40:22,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:40:22,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (1/1) ... [2019-10-13 19:40:22,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:40:22,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:40:22,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:40:22,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:40:22,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (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 19:40:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:40:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:40:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:40:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:40:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:40:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:40:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:40:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:40:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:40:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:40:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:40:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:40:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:40:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:40:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:40:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:40:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:40:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:40:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:40:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:40:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:40:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:40:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:40:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:40:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:40:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:40:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:40:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:40:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:40:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:40:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:40:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:40:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:40:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:40:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:40:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:40:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:40:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:40:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:40:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:40:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:40:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:40:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:40:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:40:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:40:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:40:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:40:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:40:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:40:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:40:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:40:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:40:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:40:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:40:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:40:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:40:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:40:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:40:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:40:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:40:23,962 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:40:23,963 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:40:23,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:23 BoogieIcfgContainer [2019-10-13 19:40:23,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:40:23,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:40:23,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:40:23,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:40:23,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:21" (1/3) ... [2019-10-13 19:40:23,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16278340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:23, skipping insertion in model container [2019-10-13 19:40:23,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:22" (2/3) ... [2019-10-13 19:40:23,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16278340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:23, skipping insertion in model container [2019-10-13 19:40:23,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:23" (3/3) ... [2019-10-13 19:40:23,973 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2019-10-13 19:40:23,984 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:40:23,993 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:40:24,004 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:40:24,032 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:40:24,033 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:40:24,033 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:40:24,033 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:40:24,034 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:40:24,035 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:40:24,036 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:40:24,037 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:40:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-10-13 19:40:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:40:24,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:24,087 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 19:40:24,090 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:24,097 INFO L82 PathProgramCache]: Analyzing trace with hash 22774911, now seen corresponding path program 1 times [2019-10-13 19:40:24,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:24,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779431376] [2019-10-13 19:40:24,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:24,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:24,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,816 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,916 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 19:40:24,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779431376] [2019-10-13 19:40:24,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:24,919 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:40:24,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698635025] [2019-10-13 19:40:24,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:40:24,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:24,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:40:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:24,943 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2019-10-13 19:40:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:26,323 INFO L93 Difference]: Finished difference Result 374 states and 484 transitions. [2019-10-13 19:40:26,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:40:26,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:40:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:26,341 INFO L225 Difference]: With dead ends: 374 [2019-10-13 19:40:26,341 INFO L226 Difference]: Without dead ends: 202 [2019-10-13 19:40:26,346 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 19:40:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-10-13 19:40:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 163. [2019-10-13 19:40:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-10-13 19:40:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2019-10-13 19:40:26,513 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 46 [2019-10-13 19:40:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:26,515 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2019-10-13 19:40:26,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:40:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2019-10-13 19:40:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:40:26,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:26,529 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 19:40:26,529 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1731168874, now seen corresponding path program 1 times [2019-10-13 19:40:26,531 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:26,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632191855] [2019-10-13 19:40:26,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:26,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:26,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,954 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,990 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 19:40:26,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632191855] [2019-10-13 19:40:26,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:26,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:40:26,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141840708] [2019-10-13 19:40:26,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:40:26,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:26,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:40:26,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:40:26,994 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 4 states. [2019-10-13 19:40:27,510 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:28,569 INFO L93 Difference]: Finished difference Result 297 states and 363 transitions. [2019-10-13 19:40:28,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:28,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:40:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:28,573 INFO L225 Difference]: With dead ends: 297 [2019-10-13 19:40:28,573 INFO L226 Difference]: Without dead ends: 186 [2019-10-13 19:40:28,575 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 19:40:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-13 19:40:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 154. [2019-10-13 19:40:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-13 19:40:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2019-10-13 19:40:28,617 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 47 [2019-10-13 19:40:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:28,618 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2019-10-13 19:40:28,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:40:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2019-10-13 19:40:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:40:28,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:28,620 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:28,621 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:28,621 INFO L82 PathProgramCache]: Analyzing trace with hash -976432514, now seen corresponding path program 1 times [2019-10-13 19:40:28,621 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:28,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693555202] [2019-10-13 19:40:28,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:28,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:28,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,965 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:29,061 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 19:40:29,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693555202] [2019-10-13 19:40:29,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:29,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:40:29,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199926392] [2019-10-13 19:40:29,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:29,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:40:29,064 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand 8 states. [2019-10-13 19:40:29,581 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:29,919 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:30,198 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:30,471 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:31,280 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:33,733 INFO L93 Difference]: Finished difference Result 525 states and 650 transitions. [2019-10-13 19:40:33,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:40:33,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:40:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:33,739 INFO L225 Difference]: With dead ends: 525 [2019-10-13 19:40:33,739 INFO L226 Difference]: Without dead ends: 395 [2019-10-13 19:40:33,746 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 19:40:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-13 19:40:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 322. [2019-10-13 19:40:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-10-13 19:40:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 390 transitions. [2019-10-13 19:40:33,852 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 390 transitions. Word has length 52 [2019-10-13 19:40:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:33,852 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 390 transitions. [2019-10-13 19:40:33,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 390 transitions. [2019-10-13 19:40:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:40:33,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:33,855 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 19:40:33,855 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:33,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1952402222, now seen corresponding path program 1 times [2019-10-13 19:40:33,856 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:33,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202272746] [2019-10-13 19:40:33,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:33,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:33,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,217 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:34,431 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 19:40:34,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202272746] [2019-10-13 19:40:34,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:34,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:34,434 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412460983] [2019-10-13 19:40:34,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:34,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:34,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:34,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:34,436 INFO L87 Difference]: Start difference. First operand 322 states and 390 transitions. Second operand 12 states. [2019-10-13 19:40:35,123 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:35,473 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:35,744 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:36,007 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:36,611 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:37,544 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:37,987 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:38,381 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:38,688 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:39,020 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:39,461 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:39,929 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:40,391 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:43,000 INFO L93 Difference]: Finished difference Result 1325 states and 1806 transitions. [2019-10-13 19:40:43,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:43,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-13 19:40:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:43,011 INFO L225 Difference]: With dead ends: 1325 [2019-10-13 19:40:43,011 INFO L226 Difference]: Without dead ends: 1027 [2019-10-13 19:40:43,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:43,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-13 19:40:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 922. [2019-10-13 19:40:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2019-10-13 19:40:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1176 transitions. [2019-10-13 19:40:43,199 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1176 transitions. Word has length 57 [2019-10-13 19:40:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:43,199 INFO L462 AbstractCegarLoop]: Abstraction has 922 states and 1176 transitions. [2019-10-13 19:40:43,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1176 transitions. [2019-10-13 19:40:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:40:43,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:43,203 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 19:40:43,203 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:43,204 INFO L82 PathProgramCache]: Analyzing trace with hash 474058772, now seen corresponding path program 1 times [2019-10-13 19:40:43,204 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:43,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966546742] [2019-10-13 19:40:43,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:43,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:43,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,536 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,652 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 19:40:43,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966546742] [2019-10-13 19:40:43,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:43,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:43,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046440689] [2019-10-13 19:40:43,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:43,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:43,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:43,656 INFO L87 Difference]: Start difference. First operand 922 states and 1176 transitions. Second operand 6 states. [2019-10-13 19:40:44,020 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:46,419 INFO L93 Difference]: Finished difference Result 2205 states and 2989 transitions. [2019-10-13 19:40:46,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:40:46,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-13 19:40:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:46,435 INFO L225 Difference]: With dead ends: 2205 [2019-10-13 19:40:46,436 INFO L226 Difference]: Without dead ends: 1307 [2019-10-13 19:40:46,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2019-10-13 19:40:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1216. [2019-10-13 19:40:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-10-13 19:40:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1510 transitions. [2019-10-13 19:40:46,675 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1510 transitions. Word has length 61 [2019-10-13 19:40:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:46,675 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 1510 transitions. [2019-10-13 19:40:46,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1510 transitions. [2019-10-13 19:40:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:40:46,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:46,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:46,681 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1364424505, now seen corresponding path program 1 times [2019-10-13 19:40:46,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:46,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375013927] [2019-10-13 19:40:46,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:46,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:46,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,052 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:40:47,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375013927] [2019-10-13 19:40:47,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419922254] [2019-10-13 19:40:47,168 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 19:40:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:47,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:47,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:40:47,523 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:47,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-13 19:40:47,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221674830] [2019-10-13 19:40:47,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 19:40:47,525 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 19:40:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:47,526 INFO L87 Difference]: Start difference. First operand 1216 states and 1510 transitions. Second operand 15 states. [2019-10-13 19:40:48,213 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:48,960 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:49,957 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:51,683 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:52,167 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:53,729 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:54,029 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:54,670 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:55,832 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:56,284 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:56,599 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:56,922 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:57,401 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:57,766 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:58,778 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:59,150 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:59,411 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:59,875 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189