/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:59:41,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:59:41,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:59:41,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:59:41,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:59:41,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:59:41,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:59:41,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:59:41,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:59:41,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:59:41,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:59:41,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:59:41,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:59:41,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:59:41,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:59:41,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:59:41,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:59:41,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:59:41,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:59:41,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:59:41,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:59:41,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:59:41,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:59:41,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:59:41,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:59:41,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:59:41,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:59:41,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:59:41,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:59:41,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:59:41,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:59:41,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:59:41,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:59:41,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:59:41,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:59:41,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:59:41,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:59:41,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:59:41,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:59:41,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:59:41,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:59:41,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:59:41,670 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:59:41,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:59:41,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:59:41,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:59:41,672 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:59:41,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:59:41,673 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:59:41,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:59:41,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:59:41,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:59:41,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:59:41,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:59:41,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:59:41,674 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:59:41,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:59:41,674 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:59:41,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:59:41,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:59:41,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:59:41,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:59:41,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:59:41,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:59:41,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:59:41,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:59:41,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:59:41,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:59:41,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:59:41,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:59:41,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:59:41,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:59:41,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:59:41,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:59:41,978 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:59:41,978 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:59:41,981 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-11-06 21:59:42,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0bfa88d2/f56b234d02d6472ca1e14ba466a7507d/FLAGc31b39bfd [2019-11-06 21:59:42,619 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:59:42,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-11-06 21:59:42,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0bfa88d2/f56b234d02d6472ca1e14ba466a7507d/FLAGc31b39bfd [2019-11-06 21:59:42,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0bfa88d2/f56b234d02d6472ca1e14ba466a7507d [2019-11-06 21:59:42,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:59:42,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:59:42,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:59:42,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:59:42,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:59:42,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:42" (1/1) ... [2019-11-06 21:59:42,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798903f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:42, skipping insertion in model container [2019-11-06 21:59:42,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:42" (1/1) ... [2019-11-06 21:59:42,893 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:59:42,962 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:59:43,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:59:43,516 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:59:43,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:59:43,651 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:59:43,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43 WrapperNode [2019-11-06 21:59:43,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:59:43,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:59:43,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:59:43,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:59:43,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... [2019-11-06 21:59:43,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:59:43,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:59:43,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:59:43,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:59:43,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:59:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:59:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:59:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:59:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:59:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:59:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:59:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:59:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:59:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:59:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:59:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:59:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:59:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:59:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:59:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:59:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:59:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:59:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:59:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:59:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:59:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 21:59:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:59:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:59:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:59:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:59:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:59:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:59:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:59:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:59:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:59:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:59:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:59:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:59:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:59:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:59:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:59:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:59:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:59:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:59:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:59:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:59:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:59:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:59:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:59:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:59:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:59:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:59:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:59:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:59:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:59:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 21:59:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 21:59:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:59:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:59:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:59:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:59:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:59:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:59:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:59:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:59:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:59:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:59:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:59:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:59:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:59:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:59:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:59:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:59:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:59:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:59:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:59:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:59:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:59:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:59:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:59:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:59:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:59:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:59:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:59:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:59:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:59:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:59:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:59:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:59:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:59:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:59:44,919 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:59:44,920 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:59:44,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:44 BoogieIcfgContainer [2019-11-06 21:59:44,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:59:44,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:59:44,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:59:44,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:59:44,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:42" (1/3) ... [2019-11-06 21:59:44,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cba4427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:44, skipping insertion in model container [2019-11-06 21:59:44,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:43" (2/3) ... [2019-11-06 21:59:44,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cba4427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:44, skipping insertion in model container [2019-11-06 21:59:44,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:44" (3/3) ... [2019-11-06 21:59:44,930 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2019-11-06 21:59:44,940 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:59:44,949 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:59:44,960 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:59:44,990 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:59:44,990 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:59:44,990 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:59:44,990 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:59:44,992 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:59:44,992 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:59:44,992 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:59:44,992 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:59:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2019-11-06 21:59:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:59:45,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:45,032 INFO L410 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] [2019-11-06 21:59:45,033 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:45,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1876229816, now seen corresponding path program 1 times [2019-11-06 21:59:45,044 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:45,045 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327217716] [2019-11-06 21:59:45,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,810 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:45,940 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327217716] [2019-11-06 21:59:45,942 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:45,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:59:45,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282603414] [2019-11-06 21:59:45,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:59:45,950 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:45,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:59:45,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:59:45,971 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2019-11-06 21:59:47,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:47,463 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2019-11-06 21:59:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:59:47,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:59:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:47,479 INFO L225 Difference]: With dead ends: 369 [2019-11-06 21:59:47,480 INFO L226 Difference]: Without dead ends: 205 [2019-11-06 21:59:47,484 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:59:47,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-06 21:59:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2019-11-06 21:59:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-11-06 21:59:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2019-11-06 21:59:47,628 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 51 [2019-11-06 21:59:47,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:47,628 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2019-11-06 21:59:47,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:59:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2019-11-06 21:59:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:59:47,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:47,639 INFO L410 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] [2019-11-06 21:59:47,639 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -473730038, now seen corresponding path program 1 times [2019-11-06 21:59:47,640 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:47,640 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792485077] [2019-11-06 21:59:47,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,019 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:48,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792485077] [2019-11-06 21:59:48,095 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:48,095 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:59:48,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589147574] [2019-11-06 21:59:48,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:59:48,107 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:59:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:59:48,114 INFO L87 Difference]: Start difference. First operand 165 states and 197 transitions. Second operand 5 states. [2019-11-06 21:59:48,703 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:50,051 INFO L93 Difference]: Finished difference Result 304 states and 380 transitions. [2019-11-06 21:59:50,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:59:50,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:59:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:50,056 INFO L225 Difference]: With dead ends: 304 [2019-11-06 21:59:50,056 INFO L226 Difference]: Without dead ends: 195 [2019-11-06 21:59:50,058 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:59:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-11-06 21:59:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 156. [2019-11-06 21:59:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-06 21:59:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 185 transitions. [2019-11-06 21:59:50,097 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 185 transitions. Word has length 52 [2019-11-06 21:59:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:50,097 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 185 transitions. [2019-11-06 21:59:50,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:59:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 185 transitions. [2019-11-06 21:59:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 21:59:50,099 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:50,100 INFO L410 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] [2019-11-06 21:59:50,100 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:50,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1190097928, now seen corresponding path program 1 times [2019-11-06 21:59:50,101 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:50,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118573555] [2019-11-06 21:59:50,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,452 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:50,568 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118573555] [2019-11-06 21:59:50,569 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:50,569 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:59:50,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474221639] [2019-11-06 21:59:50,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:59:50,570 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:59:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:59:50,570 INFO L87 Difference]: Start difference. First operand 156 states and 185 transitions. Second operand 9 states. [2019-11-06 21:59:51,048 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:51,414 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 21:59:51,710 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:52,004 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:52,957 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:55,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:55,795 INFO L93 Difference]: Finished difference Result 528 states and 668 transitions. [2019-11-06 21:59:55,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:59:55,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-06 21:59:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:55,801 INFO L225 Difference]: With dead ends: 528 [2019-11-06 21:59:55,801 INFO L226 Difference]: Without dead ends: 400 [2019-11-06 21:59:55,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:59:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2019-11-06 21:59:55,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 323. [2019-11-06 21:59:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2019-11-06 21:59:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 396 transitions. [2019-11-06 21:59:55,881 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 396 transitions. Word has length 57 [2019-11-06 21:59:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:55,881 INFO L462 AbstractCegarLoop]: Abstraction has 323 states and 396 transitions. [2019-11-06 21:59:55,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:59:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 396 transitions. [2019-11-06 21:59:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-06 21:59:55,884 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:55,884 INFO L410 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] [2019-11-06 21:59:55,884 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:55,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1162392239, now seen corresponding path program 1 times [2019-11-06 21:59:55,885 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:55,885 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834897862] [2019-11-06 21:59:55,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,208 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:56,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834897862] [2019-11-06 21:59:56,318 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:56,318 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:59:56,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894561626] [2019-11-06 21:59:56,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:59:56,319 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:59:56,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:59:56,320 INFO L87 Difference]: Start difference. First operand 323 states and 396 transitions. Second operand 9 states. [2019-11-06 21:59:56,905 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:58,023 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:58,514 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:58,788 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:59,065 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:01,224 INFO L93 Difference]: Finished difference Result 1042 states and 1376 transitions. [2019-11-06 22:00:01,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 22:00:01,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-11-06 22:00:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:01,232 INFO L225 Difference]: With dead ends: 1042 [2019-11-06 22:00:01,232 INFO L226 Difference]: Without dead ends: 747 [2019-11-06 22:00:01,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:00:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-06 22:00:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 594. [2019-11-06 22:00:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-11-06 22:00:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 732 transitions. [2019-11-06 22:00:01,379 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 732 transitions. Word has length 62 [2019-11-06 22:00:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:01,380 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 732 transitions. [2019-11-06 22:00:01,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:00:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 732 transitions. [2019-11-06 22:00:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 22:00:01,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:01,383 INFO L410 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] [2019-11-06 22:00:01,383 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:01,383 INFO L82 PathProgramCache]: Analyzing trace with hash -956691731, now seen corresponding path program 1 times [2019-11-06 22:00:01,384 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:01,384 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983706198] [2019-11-06 22:00:01,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,782 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:01,868 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983706198] [2019-11-06 22:00:01,868 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:01,868 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:01,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043353089] [2019-11-06 22:00:01,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:01,869 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:01,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:01,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:01,870 INFO L87 Difference]: Start difference. First operand 594 states and 732 transitions. Second operand 10 states. [2019-11-06 22:00:02,488 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:03,639 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:03,978 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:04,245 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:05,170 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:06,802 INFO L93 Difference]: Finished difference Result 1649 states and 2238 transitions. [2019-11-06 22:00:06,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-06 22:00:06,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-11-06 22:00:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:06,811 INFO L225 Difference]: With dead ends: 1649 [2019-11-06 22:00:06,812 INFO L226 Difference]: Without dead ends: 1083 [2019-11-06 22:00:06,815 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-11-06 22:00:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2019-11-06 22:00:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 877. [2019-11-06 22:00:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-11-06 22:00:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1063 transitions. [2019-11-06 22:00:06,989 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1063 transitions. Word has length 66 [2019-11-06 22:00:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:06,990 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1063 transitions. [2019-11-06 22:00:06,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1063 transitions. [2019-11-06 22:00:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:00:06,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:06,993 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:06,993 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:06,994 INFO L82 PathProgramCache]: Analyzing trace with hash 181415894, now seen corresponding path program 1 times [2019-11-06 22:00:06,994 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:06,994 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398190395] [2019-11-06 22:00:06,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,294 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:07,490 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398190395] [2019-11-06 22:00:07,491 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:07,491 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:00:07,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109370314] [2019-11-06 22:00:07,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:00:07,492 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:07,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:00:07,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:07,493 INFO L87 Difference]: Start difference. First operand 877 states and 1063 transitions. Second operand 12 states. [2019-11-06 22:00:08,083 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:08,343 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:08,607 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:09,590 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:09,891 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:10,168 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:11,999 INFO L93 Difference]: Finished difference Result 2014 states and 2715 transitions. [2019-11-06 22:00:11,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:00:11,999 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2019-11-06 22:00:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:12,012 INFO L225 Difference]: With dead ends: 2014 [2019-11-06 22:00:12,012 INFO L226 Difference]: Without dead ends: 1165 [2019-11-06 22:00:12,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 22:00:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2019-11-06 22:00:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 899. [2019-11-06 22:00:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-11-06 22:00:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1087 transitions. [2019-11-06 22:00:12,175 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1087 transitions. Word has length 109 [2019-11-06 22:00:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:12,176 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1087 transitions. [2019-11-06 22:00:12,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:00:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1087 transitions. [2019-11-06 22:00:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:00:12,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:12,179 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:12,179 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:12,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1757746152, now seen corresponding path program 1 times [2019-11-06 22:00:12,180 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:12,180 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566475714] [2019-11-06 22:00:12,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,455 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:12,650 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566475714] [2019-11-06 22:00:12,650 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:12,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:12,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937569446] [2019-11-06 22:00:12,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:12,652 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:12,654 INFO L87 Difference]: Start difference. First operand 899 states and 1087 transitions. Second operand 10 states. [2019-11-06 22:00:14,083 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:14,371 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:00:14,660 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:14,952 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:16,505 INFO L93 Difference]: Finished difference Result 2052 states and 2755 transitions. [2019-11-06 22:00:16,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:00:16,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2019-11-06 22:00:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:16,514 INFO L225 Difference]: With dead ends: 2052 [2019-11-06 22:00:16,514 INFO L226 Difference]: Without dead ends: 1181 [2019-11-06 22:00:16,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:00:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-11-06 22:00:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 919. [2019-11-06 22:00:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-11-06 22:00:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1107 transitions. [2019-11-06 22:00:16,711 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1107 transitions. Word has length 109 [2019-11-06 22:00:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:16,712 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1107 transitions. [2019-11-06 22:00:16,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1107 transitions. [2019-11-06 22:00:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:00:16,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:16,715 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:16,716 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 950585909, now seen corresponding path program 1 times [2019-11-06 22:00:16,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:16,719 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195877801] [2019-11-06 22:00:16,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,056 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:17,219 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195877801] [2019-11-06 22:00:17,219 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:17,219 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:17,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370246900] [2019-11-06 22:00:17,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:17,220 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:17,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:17,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:17,221 INFO L87 Difference]: Start difference. First operand 919 states and 1107 transitions. Second operand 8 states. [2019-11-06 22:00:17,620 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:18,204 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189