/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_spec5_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:07:52,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:07:52,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:07:52,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:07:52,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:07:52,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:07:52,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:07:52,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:07:52,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:07:52,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:07:52,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:07:52,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:07:52,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:07:52,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:07:52,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:07:52,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:07:52,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:07:52,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:07:52,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:07:52,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:07:52,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:07:52,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:07:52,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:07:52,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:07:52,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:07:52,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:07:52,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:07:52,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:07:52,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:07:52,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:07:52,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:07:52,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:07:52,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:07:52,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:07:52,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:07:52,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:07:52,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:07:52,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:07:52,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:07:52,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:07:52,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:07:52,636 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 22:07:52,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:07:52,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:07:52,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:07:52,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:07:52,653 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:07:52,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:07:52,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:07:52,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:07:52,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:07:52,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:07:52,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:07:52,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:07:52,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:07:52,655 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:07:52,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:07:52,655 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:07:52,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:07:52,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:07:52,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:07:52,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:07:52,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:07:52,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:07:52,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:07:52,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:07:52,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:07:52,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:07:52,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:07:52,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:07:52,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:07:52,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:07:52,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:07:52,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:07:52,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:07:52,949 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:07:52,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-11-06 22:07:53,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22dda220e/5fdadd32dba24bf48bad5ba13d978c0b/FLAG9cab62437 [2019-11-06 22:07:53,512 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:07:53,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-11-06 22:07:53,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22dda220e/5fdadd32dba24bf48bad5ba13d978c0b/FLAG9cab62437 [2019-11-06 22:07:53,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22dda220e/5fdadd32dba24bf48bad5ba13d978c0b [2019-11-06 22:07:53,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:07:53,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:07:53,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:07:53,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:07:53,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:07:53,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:53" (1/1) ... [2019-11-06 22:07:53,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39efa35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:53, skipping insertion in model container [2019-11-06 22:07:53,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:53" (1/1) ... [2019-11-06 22:07:53,856 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:07:53,911 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:07:54,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:07:54,315 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:07:54,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:07:54,499 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:07:54,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54 WrapperNode [2019-11-06 22:07:54,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:07:54,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:07:54,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:07:54,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:07:54,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2019-11-06 22:07:54,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:07:54,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:07:54,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:07:54,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:07:54,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (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 22:07:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:07:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:07:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:07:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:07:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:07:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:07:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:07:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:07:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:07:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:07:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:07:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:07:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:07:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:07:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:07:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:07:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:07:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:07:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:07:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:07:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:07:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:07:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:07:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:07:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:07:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:07:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:07:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:07:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:07:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:07:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:07:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:07:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:07:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:07:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:07:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:07:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:07:55,851 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:07:55,851 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:07:55,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:55 BoogieIcfgContainer [2019-11-06 22:07:55,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:07:55,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:07:55,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:07:55,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:07:55,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:53" (1/3) ... [2019-11-06 22:07:55,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c79105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:55, skipping insertion in model container [2019-11-06 22:07:55,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (2/3) ... [2019-11-06 22:07:55,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c79105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:55, skipping insertion in model container [2019-11-06 22:07:55,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:55" (3/3) ... [2019-11-06 22:07:55,864 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-11-06 22:07:55,874 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:07:55,885 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:07:55,896 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:07:55,924 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:07:55,924 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:07:55,924 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:07:55,924 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:07:55,925 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:07:55,925 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:07:55,927 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:07:55,927 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:07:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2019-11-06 22:07:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:07:55,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:55,973 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] [2019-11-06 22:07:55,975 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash -878720759, now seen corresponding path program 1 times [2019-11-06 22:07:55,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:55,991 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011892877] [2019-11-06 22:07:55,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,687 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:56,801 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 22:07:56,802 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011892877] [2019-11-06 22:07:56,804 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:56,805 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:07:56,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934927358] [2019-11-06 22:07:56,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:07:56,815 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:56,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:07:56,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:07:56,833 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 4 states. [2019-11-06 22:07:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:57,975 INFO L93 Difference]: Finished difference Result 318 states and 410 transitions. [2019-11-06 22:07:57,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:07:57,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-11-06 22:07:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:58,006 INFO L225 Difference]: With dead ends: 318 [2019-11-06 22:07:58,006 INFO L226 Difference]: Without dead ends: 175 [2019-11-06 22:07:58,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 22:07:58,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-11-06 22:07:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2019-11-06 22:07:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-06 22:07:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2019-11-06 22:07:58,149 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 59 [2019-11-06 22:07:58,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:58,151 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2019-11-06 22:07:58,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:07:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2019-11-06 22:07:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:07:58,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:58,165 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] [2019-11-06 22:07:58,166 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:58,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1980606616, now seen corresponding path program 1 times [2019-11-06 22:07:58,166 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:58,167 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42396199] [2019-11-06 22:07:58,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,559 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:58,647 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 22:07:58,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42396199] [2019-11-06 22:07:58,647 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:58,648 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:07:58,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752041173] [2019-11-06 22:07:58,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:07:58,662 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:58,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:07:58,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:07:58,662 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 5 states. [2019-11-06 22:07:59,156 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:00,082 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2019-11-06 22:08:00,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:08:00,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 22:08:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:00,085 INFO L225 Difference]: With dead ends: 257 [2019-11-06 22:08:00,085 INFO L226 Difference]: Without dead ends: 165 [2019-11-06 22:08:00,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:08:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-11-06 22:08:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 135. [2019-11-06 22:08:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-11-06 22:08:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2019-11-06 22:08:00,123 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 60 [2019-11-06 22:08:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:00,124 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2019-11-06 22:08:00,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:08:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2019-11-06 22:08:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:08:00,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:00,126 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] [2019-11-06 22:08:00,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:00,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1839911150, now seen corresponding path program 1 times [2019-11-06 22:08:00,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:00,128 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356394080] [2019-11-06 22:08:00,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,512 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:00,616 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 22:08:00,616 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356394080] [2019-11-06 22:08:00,617 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:00,617 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:00,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562259024] [2019-11-06 22:08:00,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:00,618 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:00,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:00,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:00,618 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 9 states. [2019-11-06 22:08:01,066 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:01,411 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:01,702 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:01,956 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:02,937 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:04,731 INFO L93 Difference]: Finished difference Result 450 states and 558 transitions. [2019-11-06 22:08:04,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:08:04,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-11-06 22:08:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:04,736 INFO L225 Difference]: With dead ends: 450 [2019-11-06 22:08:04,737 INFO L226 Difference]: Without dead ends: 343 [2019-11-06 22:08:04,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:08:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-11-06 22:08:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 290. [2019-11-06 22:08:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-11-06 22:08:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2019-11-06 22:08:04,811 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 64 [2019-11-06 22:08:04,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:04,811 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2019-11-06 22:08:04,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2019-11-06 22:08:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:08:04,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:04,814 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] [2019-11-06 22:08:04,814 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash 423224560, now seen corresponding path program 1 times [2019-11-06 22:08:04,815 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:04,815 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417222466] [2019-11-06 22:08:04,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,212 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:08:05,333 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417222466] [2019-11-06 22:08:05,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:05,334 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:05,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616894050] [2019-11-06 22:08:05,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:05,335 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:05,336 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 9 states. [2019-11-06 22:08:05,828 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:06,539 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:07,464 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:07,819 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:08,154 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:08,432 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:09,225 INFO L93 Difference]: Finished difference Result 739 states and 964 transitions. [2019-11-06 22:08:09,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:08:09,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-11-06 22:08:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:09,232 INFO L225 Difference]: With dead ends: 739 [2019-11-06 22:08:09,233 INFO L226 Difference]: Without dead ends: 477 [2019-11-06 22:08:09,235 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:08:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2019-11-06 22:08:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 413. [2019-11-06 22:08:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-11-06 22:08:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 499 transitions. [2019-11-06 22:08:09,316 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 499 transitions. Word has length 70 [2019-11-06 22:08:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:09,317 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 499 transitions. [2019-11-06 22:08:09,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 499 transitions. [2019-11-06 22:08:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:08:09,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:09,319 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] [2019-11-06 22:08:09,320 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash -742421187, now seen corresponding path program 1 times [2019-11-06 22:08:09,320 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:09,321 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130363319] [2019-11-06 22:08:09,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,653 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:09,773 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 22:08:09,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130363319] [2019-11-06 22:08:09,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:09,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:09,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045773263] [2019-11-06 22:08:09,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:09,775 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:09,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:09,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:09,776 INFO L87 Difference]: Start difference. First operand 413 states and 499 transitions. Second operand 9 states. [2019-11-06 22:08:11,180 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:11,448 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:08:11,753 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:12,026 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:12,813 INFO L93 Difference]: Finished difference Result 884 states and 1127 transitions. [2019-11-06 22:08:12,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:08:12,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2019-11-06 22:08:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:12,818 INFO L225 Difference]: With dead ends: 884 [2019-11-06 22:08:12,819 INFO L226 Difference]: Without dead ends: 499 [2019-11-06 22:08:12,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:08:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-11-06 22:08:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 426. [2019-11-06 22:08:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-11-06 22:08:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2019-11-06 22:08:12,899 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 92 [2019-11-06 22:08:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:12,899 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2019-11-06 22:08:12,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2019-11-06 22:08:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:08:12,902 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:12,902 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] [2019-11-06 22:08:12,902 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash -40821313, now seen corresponding path program 1 times [2019-11-06 22:08:12,903 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:12,903 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687944356] [2019-11-06 22:08:12,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,235 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:13,364 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 22:08:13,365 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687944356] [2019-11-06 22:08:13,365 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:13,365 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:08:13,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248262217] [2019-11-06 22:08:13,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:08:13,366 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:13,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:08:13,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:08:13,367 INFO L87 Difference]: Start difference. First operand 426 states and 513 transitions. Second operand 11 states. [2019-11-06 22:08:13,871 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:14,130 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:14,386 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:15,316 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:15,620 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:15,893 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:16,840 INFO L93 Difference]: Finished difference Result 911 states and 1176 transitions. [2019-11-06 22:08:16,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:08:16,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2019-11-06 22:08:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:16,846 INFO L225 Difference]: With dead ends: 911 [2019-11-06 22:08:16,846 INFO L226 Difference]: Without dead ends: 513 [2019-11-06 22:08:16,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:08:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-11-06 22:08:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 434. [2019-11-06 22:08:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-11-06 22:08:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-11-06 22:08:16,922 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 92 [2019-11-06 22:08:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:16,922 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-11-06 22:08:16,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:08:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-11-06 22:08:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:08:16,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:16,924 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] [2019-11-06 22:08:16,925 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1684659584, now seen corresponding path program 1 times [2019-11-06 22:08:16,925 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:16,926 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618252398] [2019-11-06 22:08:16,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,238 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:17,377 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 22:08:17,378 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618252398] [2019-11-06 22:08:17,379 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:17,379 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:08:17,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260514578] [2019-11-06 22:08:17,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:08:17,380 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:17,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:08:17,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:08:17,381 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 7 states. [2019-11-06 22:08:17,816 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:18,373 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:20,347 INFO L93 Difference]: Finished difference Result 1379 states and 1792 transitions. [2019-11-06 22:08:20,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:08:20,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-11-06 22:08:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:20,355 INFO L225 Difference]: With dead ends: 1379 [2019-11-06 22:08:20,356 INFO L226 Difference]: Without dead ends: 973 [2019-11-06 22:08:20,358 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:08:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-11-06 22:08:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 899. [2019-11-06 22:08:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-11-06 22:08:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1095 transitions. [2019-11-06 22:08:20,500 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1095 transitions. Word has length 92 [2019-11-06 22:08:20,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:20,501 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1095 transitions. [2019-11-06 22:08:20,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:08:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1095 transitions. [2019-11-06 22:08:20,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-06 22:08:20,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:20,506 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] [2019-11-06 22:08:20,506 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:20,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1838654426, now seen corresponding path program 1 times [2019-11-06 22:08:20,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:20,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378608135] [2019-11-06 22:08:20,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,898 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:21,053 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 22:08:21,053 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378608135] [2019-11-06 22:08:21,054 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:21,054 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:08:21,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354488633] [2019-11-06 22:08:21,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:08:21,055 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:21,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:08:21,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:08:21,055 INFO L87 Difference]: Start difference. First operand 899 states and 1095 transitions. Second operand 12 states. [2019-11-06 22:08:21,844 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:22,521 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:23,290 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:23,642 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:23,894 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:08:24,196 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:24,490 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:26,710 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:27,020 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:27,574 INFO L93 Difference]: Finished difference Result 2547 states and 3312 transitions. [2019-11-06 22:08:27,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-06 22:08:27,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2019-11-06 22:08:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:27,589 INFO L225 Difference]: With dead ends: 2547 [2019-11-06 22:08:27,589 INFO L226 Difference]: Without dead ends: 1864 [2019-11-06 22:08:27,602 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:08:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2019-11-06 22:08:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1570. [2019-11-06 22:08:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2019-11-06 22:08:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1900 transitions. [2019-11-06 22:08:27,947 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1900 transitions. Word has length 96 [2019-11-06 22:08:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:27,949 INFO L462 AbstractCegarLoop]: Abstraction has 1570 states and 1900 transitions. [2019-11-06 22:08:27,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:08:27,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1900 transitions. [2019-11-06 22:08:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-06 22:08:27,956 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:27,956 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:27,957 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1624055928, now seen corresponding path program 1 times [2019-11-06 22:08:27,958 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:27,958 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478913772] [2019-11-06 22:08:27,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,377 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-06 22:08:28,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478913772] [2019-11-06 22:08:28,615 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098816818] [2019-11-06 22:08:28,615 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 [2019-11-06 22:08:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:28,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 22:08:28,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:08:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:08:29,030 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:08:29,030 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-11-06 22:08:29,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354158651] [2019-11-06 22:08:29,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 22:08:29,032 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:29,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 22:08:29,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:08:29,033 INFO L87 Difference]: Start difference. First operand 1570 states and 1900 transitions. Second operand 20 states. [2019-11-06 22:08:29,635 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:08:30,057 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-11-06 22:08:30,371 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 195