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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:21,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:21,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:21,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:21,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:21,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:21,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:21,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:21,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:21,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:21,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:21,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:21,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:21,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:21,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:21,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:21,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:21,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:21,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:21,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:21,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:21,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:21,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:21,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:21,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:21,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:21,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:21,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:21,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:21,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:21,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:21,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:21,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:21,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:21,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:21,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:21,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:21,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:21,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:21,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:21,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:21,811 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 [2019-09-20 13:07:21,826 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:21,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:21,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:21,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:21,828 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:21,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:21,829 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:21,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:21,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:21,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:21,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:21,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:21,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:21,830 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:21,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:21,830 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:21,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:21,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:21,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:21,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:21,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:21,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:21,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:21,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:21,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:21,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:21,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:21,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:21,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:21,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:21,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:21,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:21,880 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:21,881 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:21,881 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2019-09-20 13:07:21,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9bf7fa9/0380d40cf0ee422299d25e37f9d5471a/FLAG6ac2223fd [2019-09-20 13:07:22,501 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:22,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2019-09-20 13:07:22,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9bf7fa9/0380d40cf0ee422299d25e37f9d5471a/FLAG6ac2223fd [2019-09-20 13:07:22,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9bf7fa9/0380d40cf0ee422299d25e37f9d5471a [2019-09-20 13:07:22,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:22,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:22,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:22,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:22,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:22,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322f0a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22, skipping insertion in model container [2019-09-20 13:07:22,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,829 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:22,870 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:23,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:23,397 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:23,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:23,537 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:23,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23 WrapperNode [2019-09-20 13:07:23,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:23,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:23,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:23,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:23,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:23,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:23,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:23,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:23,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (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 [2019-09-20 13:07:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:24,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:24,839 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:24,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:24 BoogieIcfgContainer [2019-09-20 13:07:24,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:24,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:24,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:24,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:24,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:22" (1/3) ... [2019-09-20 13:07:24,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c61587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:24, skipping insertion in model container [2019-09-20 13:07:24,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (2/3) ... [2019-09-20 13:07:24,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c61587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:24, skipping insertion in model container [2019-09-20 13:07:24,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:24" (3/3) ... [2019-09-20 13:07:24,849 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2019-09-20 13:07:24,860 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:24,870 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:24,887 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:24,922 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:24,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:24,923 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:24,923 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:24,923 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:24,923 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:24,923 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:24,923 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:24,924 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2019-09-20 13:07:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:24,987 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:24,989 INFO L407 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] [2019-09-20 13:07:24,993 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2019-09-20 13:07:25,004 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:25,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:25,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:25,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:25,408 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 2 states. [2019-09-20 13:07:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,452 INFO L93 Difference]: Finished difference Result 280 states and 347 transitions. [2019-09-20 13:07:25,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:25,453 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,471 INFO L225 Difference]: With dead ends: 280 [2019-09-20 13:07:25,471 INFO L226 Difference]: Without dead ends: 142 [2019-09-20 13:07:25,479 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-09-20 13:07:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-09-20 13:07:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-09-20 13:07:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2019-09-20 13:07:25,538 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2019-09-20 13:07:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:25,539 INFO L475 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2019-09-20 13:07:25,539 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2019-09-20 13:07:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:25,544 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,544 INFO L407 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] [2019-09-20 13:07:25,545 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1068721091, now seen corresponding path program 1 times [2019-09-20 13:07:25,545 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:25,662 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:25,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:25,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:25,664 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 3 states. [2019-09-20 13:07:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,720 INFO L93 Difference]: Finished difference Result 223 states and 261 transitions. [2019-09-20 13:07:25,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:25,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,725 INFO L225 Difference]: With dead ends: 223 [2019-09-20 13:07:25,725 INFO L226 Difference]: Without dead ends: 133 [2019-09-20 13:07:25,730 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-09-20 13:07:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2019-09-20 13:07:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-09-20 13:07:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2019-09-20 13:07:25,762 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 60 [2019-09-20 13:07:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:25,763 INFO L475 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2019-09-20 13:07:25,763 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2019-09-20 13:07:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:07:25,769 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,769 INFO L407 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] [2019-09-20 13:07:25,772 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,772 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2019-09-20 13:07:25,773 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:25,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:25,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:25,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:25,978 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand 7 states. [2019-09-20 13:07:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:26,493 INFO L93 Difference]: Finished difference Result 399 states and 483 transitions. [2019-09-20 13:07:26,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:26,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:07:26,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:26,499 INFO L225 Difference]: With dead ends: 399 [2019-09-20 13:07:26,499 INFO L226 Difference]: Without dead ends: 294 [2019-09-20 13:07:26,500 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:07:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-20 13:07:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 286. [2019-09-20 13:07:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2019-09-20 13:07:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 346 transitions. [2019-09-20 13:07:26,609 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 346 transitions. Word has length 64 [2019-09-20 13:07:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:26,610 INFO L475 AbstractCegarLoop]: Abstraction has 286 states and 346 transitions. [2019-09-20 13:07:26,610 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 346 transitions. [2019-09-20 13:07:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:07:26,613 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:26,613 INFO L407 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] [2019-09-20 13:07:26,613 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:26,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2019-09-20 13:07:26,614 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:26,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:26,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:26,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:26,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:26,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:26,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:26,797 INFO L87 Difference]: Start difference. First operand 286 states and 346 transitions. Second operand 7 states. [2019-09-20 13:07:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:27,588 INFO L93 Difference]: Finished difference Result 723 states and 942 transitions. [2019-09-20 13:07:27,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:27,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:07:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:27,596 INFO L225 Difference]: With dead ends: 723 [2019-09-20 13:07:27,596 INFO L226 Difference]: Without dead ends: 465 [2019-09-20 13:07:27,601 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-09-20 13:07:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 412. [2019-09-20 13:07:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-09-20 13:07:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2019-09-20 13:07:27,681 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 70 [2019-09-20 13:07:27,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:27,682 INFO L475 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2019-09-20 13:07:27,682 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2019-09-20 13:07:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:27,687 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:27,692 INFO L407 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] [2019-09-20 13:07:27,692 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:27,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2019-09-20 13:07:27,701 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:27,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:27,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:27,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:27,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:27,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:27,862 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:27,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:27,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:27,863 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 4 states. [2019-09-20 13:07:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,214 INFO L93 Difference]: Finished difference Result 1482 states and 1906 transitions. [2019-09-20 13:07:28,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:28,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-09-20 13:07:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,225 INFO L225 Difference]: With dead ends: 1482 [2019-09-20 13:07:28,225 INFO L226 Difference]: Without dead ends: 1098 [2019-09-20 13:07:28,227 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2019-09-20 13:07:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1072. [2019-09-20 13:07:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2019-09-20 13:07:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1347 transitions. [2019-09-20 13:07:28,322 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1347 transitions. Word has length 92 [2019-09-20 13:07:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,324 INFO L475 AbstractCegarLoop]: Abstraction has 1072 states and 1347 transitions. [2019-09-20 13:07:28,324 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1347 transitions. [2019-09-20 13:07:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:28,328 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,329 INFO L407 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] [2019-09-20 13:07:28,329 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,329 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2019-09-20 13:07:28,330 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:28,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:28,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:28,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:28,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:28,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:28,462 INFO L87 Difference]: Start difference. First operand 1072 states and 1347 transitions. Second operand 6 states. [2019-09-20 13:07:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,549 INFO L93 Difference]: Finished difference Result 2146 states and 2756 transitions. [2019-09-20 13:07:28,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:28,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2019-09-20 13:07:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,560 INFO L225 Difference]: With dead ends: 2146 [2019-09-20 13:07:28,560 INFO L226 Difference]: Without dead ends: 1102 [2019-09-20 13:07:28,564 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2019-09-20 13:07:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2019-09-20 13:07:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2019-09-20 13:07:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1379 transitions. [2019-09-20 13:07:28,639 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1379 transitions. Word has length 92 [2019-09-20 13:07:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,640 INFO L475 AbstractCegarLoop]: Abstraction has 1102 states and 1379 transitions. [2019-09-20 13:07:28,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1379 transitions. [2019-09-20 13:07:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:28,643 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,644 INFO L407 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] [2019-09-20 13:07:28,644 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,644 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2019-09-20 13:07:28,644 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:28,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:28,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:28,766 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:28,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:28,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:28,768 INFO L87 Difference]: Start difference. First operand 1102 states and 1379 transitions. Second operand 8 states. [2019-09-20 13:07:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,845 INFO L93 Difference]: Finished difference Result 2037 states and 2619 transitions. [2019-09-20 13:07:28,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:28,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-09-20 13:07:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,852 INFO L225 Difference]: With dead ends: 2037 [2019-09-20 13:07:28,852 INFO L226 Difference]: Without dead ends: 963 [2019-09-20 13:07:28,856 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-09-20 13:07:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2019-09-20 13:07:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-09-20 13:07:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1182 transitions. [2019-09-20 13:07:28,918 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1182 transitions. Word has length 92 [2019-09-20 13:07:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,919 INFO L475 AbstractCegarLoop]: Abstraction has 963 states and 1182 transitions. [2019-09-20 13:07:28,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1182 transitions. [2019-09-20 13:07:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:07:28,921 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,922 INFO L407 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] [2019-09-20 13:07:28,922 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,922 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2019-09-20 13:07:28,922 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:29,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:29,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:29,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:29,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:29,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:29,168 INFO L87 Difference]: Start difference. First operand 963 states and 1182 transitions. Second operand 9 states. [2019-09-20 13:07:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:30,358 INFO L93 Difference]: Finished difference Result 2626 states and 3384 transitions. [2019-09-20 13:07:30,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:30,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-20 13:07:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:30,383 INFO L225 Difference]: With dead ends: 2626 [2019-09-20 13:07:30,383 INFO L226 Difference]: Without dead ends: 1873 [2019-09-20 13:07:30,391 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2019-09-20 13:07:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1648. [2019-09-20 13:07:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2019-09-20 13:07:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1993 transitions. [2019-09-20 13:07:30,559 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1993 transitions. Word has length 96 [2019-09-20 13:07:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:30,561 INFO L475 AbstractCegarLoop]: Abstraction has 1648 states and 1993 transitions. [2019-09-20 13:07:30,561 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1993 transitions. [2019-09-20 13:07:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-09-20 13:07:30,567 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:30,568 INFO L407 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] [2019-09-20 13:07:30,568 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2019-09-20 13:07:30,569 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:30,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:30,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:30,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:30,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:07:30,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:30,799 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:30,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:31,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-20 13:07:31,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:31,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:31,213 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:31,215 INFO L87 Difference]: Start difference. First operand 1648 states and 1993 transitions. Second operand 16 states. [2019-09-20 13:07:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,819 INFO L93 Difference]: Finished difference Result 3767 states and 4762 transitions. [2019-09-20 13:07:32,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:32,819 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2019-09-20 13:07:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,834 INFO L225 Difference]: With dead ends: 3767 [2019-09-20 13:07:32,835 INFO L226 Difference]: Without dead ends: 2323 [2019-09-20 13:07:32,840 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:07:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2019-09-20 13:07:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2077. [2019-09-20 13:07:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-09-20 13:07:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2483 transitions. [2019-09-20 13:07:32,990 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2483 transitions. Word has length 155 [2019-09-20 13:07:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,990 INFO L475 AbstractCegarLoop]: Abstraction has 2077 states and 2483 transitions. [2019-09-20 13:07:32,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2483 transitions. [2019-09-20 13:07:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-09-20 13:07:32,999 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:33,000 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:07:33,000 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2019-09-20 13:07:33,001 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:33,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:33,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:33,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:33,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-09-20 13:07:33,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:33,224 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:33,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:33,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:33,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-09-20 13:07:33,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:33,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:33,890 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:33,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:33,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:33,891 INFO L87 Difference]: Start difference. First operand 2077 states and 2483 transitions. Second operand 19 states. [2019-09-20 13:07:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:41,216 INFO L93 Difference]: Finished difference Result 8127 states and 11723 transitions. [2019-09-20 13:07:41,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:07:41,216 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 269 [2019-09-20 13:07:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:41,259 INFO L225 Difference]: With dead ends: 8127 [2019-09-20 13:07:41,259 INFO L226 Difference]: Without dead ends: 6086 [2019-09-20 13:07:41,274 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=595, Invalid=3827, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:07:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2019-09-20 13:07:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4281. [2019-09-20 13:07:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4281 states. [2019-09-20 13:07:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 4931 transitions. [2019-09-20 13:07:41,683 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 4931 transitions. Word has length 269 [2019-09-20 13:07:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:41,684 INFO L475 AbstractCegarLoop]: Abstraction has 4281 states and 4931 transitions. [2019-09-20 13:07:41,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 4931 transitions. [2019-09-20 13:07:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-09-20 13:07:41,704 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:41,705 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:07:41,705 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:41,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:41,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1881765362, now seen corresponding path program 1 times [2019-09-20 13:07:41,706 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:41,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:41,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:41,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 93 proven. 53 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-09-20 13:07:41,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:41,976 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:42,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:42,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:42,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 233 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-20 13:07:42,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:42,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:42,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:42,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:42,540 INFO L87 Difference]: Start difference. First operand 4281 states and 4931 transitions. Second operand 20 states. [2019-09-20 13:07:44,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:44,688 INFO L93 Difference]: Finished difference Result 8148 states and 9446 transitions. [2019-09-20 13:07:44,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:44,689 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 289 [2019-09-20 13:07:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:44,728 INFO L225 Difference]: With dead ends: 8148 [2019-09-20 13:07:44,728 INFO L226 Difference]: Without dead ends: 4297 [2019-09-20 13:07:44,746 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2019-09-20 13:07:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4285. [2019-09-20 13:07:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4285 states. [2019-09-20 13:07:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 4925 transitions. [2019-09-20 13:07:45,248 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 4925 transitions. Word has length 289 [2019-09-20 13:07:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:45,251 INFO L475 AbstractCegarLoop]: Abstraction has 4285 states and 4925 transitions. [2019-09-20 13:07:45,251 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 4925 transitions. [2019-09-20 13:07:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-09-20 13:07:45,272 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:45,272 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:07:45,273 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1166058728, now seen corresponding path program 1 times [2019-09-20 13:07:45,273 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:45,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:45,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-20 13:07:45,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:45,589 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:45,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:45,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-09-20 13:07:45,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:45,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:45,990 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:45,992 INFO L87 Difference]: Start difference. First operand 4285 states and 4925 transitions. Second operand 14 states. [2019-09-20 13:07:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:48,827 INFO L93 Difference]: Finished difference Result 9634 states and 12148 transitions. [2019-09-20 13:07:48,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:07:48,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 290 [2019-09-20 13:07:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:48,872 INFO L225 Difference]: With dead ends: 9634 [2019-09-20 13:07:48,872 INFO L226 Difference]: Without dead ends: 7081 [2019-09-20 13:07:48,884 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:07:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2019-09-20 13:07:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 5204. [2019-09-20 13:07:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5204 states. [2019-09-20 13:07:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 5981 transitions. [2019-09-20 13:07:49,252 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 5981 transitions. Word has length 290 [2019-09-20 13:07:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:49,254 INFO L475 AbstractCegarLoop]: Abstraction has 5204 states and 5981 transitions. [2019-09-20 13:07:49,254 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:07:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 5981 transitions. [2019-09-20 13:07:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2019-09-20 13:07:49,286 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:49,287 INFO L407 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:49,287 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:49,288 INFO L82 PathProgramCache]: Analyzing trace with hash -839039157, now seen corresponding path program 1 times [2019-09-20 13:07:49,288 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:49,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:49,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:49,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:49,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2019-09-20 13:07:49,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:49,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:49,631 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:49,632 INFO L87 Difference]: Start difference. First operand 5204 states and 5981 transitions. Second operand 4 states. [2019-09-20 13:07:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:49,894 INFO L93 Difference]: Finished difference Result 6322 states and 7314 transitions. [2019-09-20 13:07:49,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:49,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 401 [2019-09-20 13:07:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:49,912 INFO L225 Difference]: With dead ends: 6322 [2019-09-20 13:07:49,913 INFO L226 Difference]: Without dead ends: 2075 [2019-09-20 13:07:49,928 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2019-09-20 13:07:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2029. [2019-09-20 13:07:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2029 states. [2019-09-20 13:07:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2253 transitions. [2019-09-20 13:07:50,040 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2253 transitions. Word has length 401 [2019-09-20 13:07:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:50,041 INFO L475 AbstractCegarLoop]: Abstraction has 2029 states and 2253 transitions. [2019-09-20 13:07:50,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2253 transitions. [2019-09-20 13:07:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2019-09-20 13:07:50,051 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:50,051 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:50,052 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:50,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:50,052 INFO L82 PathProgramCache]: Analyzing trace with hash 199530015, now seen corresponding path program 1 times [2019-09-20 13:07:50,052 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:50,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:50,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 116 proven. 88 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2019-09-20 13:07:50,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:50,530 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:50,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:50,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:07:50,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 212 proven. 49 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:51,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:51,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2019-09-20 13:07:51,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-20 13:07:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-20 13:07:51,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2019-09-20 13:07:51,086 INFO L87 Difference]: Start difference. First operand 2029 states and 2253 transitions. Second operand 21 states.