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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:41:21,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:41:21,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:41:21,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:41:21,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:41:21,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:41:21,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:41:21,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:41:21,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:41:21,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:41:21,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:41:21,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:41:21,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:41:21,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:41:21,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:41:21,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:41:21,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:41:21,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:41:21,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:41:21,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:41:21,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:41:21,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:41:21,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:41:21,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:41:21,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:41:21,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:41:21,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:41:21,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:41:21,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:41:21,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:41:21,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:41:21,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:41:21,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:41:21,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:41:21,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:41:21,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:41:21,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:41:21,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:41:21,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:41:21,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:41:21,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:41:21,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:41:21,845 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:41:21,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:41:21,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:41:21,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:41:21,849 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:41:21,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:41:21,849 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:41:21,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:41:21,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:41:21,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:41:21,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:41:21,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:41:21,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:41:21,852 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:41:21,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:41:21,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:41:21,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:41:21,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:41:21,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:41:21,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:41:21,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:41:21,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:41:21,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:41:21,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:41:21,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:41:21,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:41:21,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:41:21,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:41:21,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:41:22,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:41:22,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:41:22,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:41:22,158 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:41:22,158 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:41:22,159 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-10-13 19:41:22,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66baa1b4d/9777ce8b93ae44e0976ccca1d5ba2c68/FLAG450ec47d4 [2019-10-13 19:41:22,830 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:41:22,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-10-13 19:41:22,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66baa1b4d/9777ce8b93ae44e0976ccca1d5ba2c68/FLAG450ec47d4 [2019-10-13 19:41:23,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66baa1b4d/9777ce8b93ae44e0976ccca1d5ba2c68 [2019-10-13 19:41:23,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:41:23,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:41:23,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:41:23,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:41:23,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:41:23,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a48b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23, skipping insertion in model container [2019-10-13 19:41:23,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,130 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:41:23,193 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:41:23,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:41:23,669 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:41:23,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:41:23,778 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:41:23,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23 WrapperNode [2019-10-13 19:41:23,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:41:23,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:41:23,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:41:23,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:41:23,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (1/1) ... [2019-10-13 19:41:23,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:41:23,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:41:23,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:41:23,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:41:23,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (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 [2019-10-13 19:41:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:41:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:41:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:41:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:41:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:41:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:41:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:41:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:41:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:41:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:41:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:41:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:41:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:41:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:41:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:41:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:41:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:41:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:41:23,975 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:41:23,975 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:41:23,975 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:41:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:41:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:41:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:41:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:41:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:41:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:41:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:41:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:41:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:41:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:41:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:41:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:41:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:41:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:41:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:41:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:41:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:41:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:41:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:41:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:41:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:41:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:41:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:41:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:41:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:41:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:41:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:41:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:41:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:41:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:41:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:41:25,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:41:25,125 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:41:25,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:25 BoogieIcfgContainer [2019-10-13 19:41:25,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:41:25,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:41:25,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:41:25,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:41:25,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:41:23" (1/3) ... [2019-10-13 19:41:25,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb33505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:25, skipping insertion in model container [2019-10-13 19:41:25,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:23" (2/3) ... [2019-10-13 19:41:25,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb33505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:25, skipping insertion in model container [2019-10-13 19:41:25,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:25" (3/3) ... [2019-10-13 19:41:25,135 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2019-10-13 19:41:25,145 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:41:25,154 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:41:25,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:41:25,194 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:41:25,194 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:41:25,195 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:41:25,195 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:41:25,195 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:41:25,195 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:41:25,195 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:41:25,196 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:41:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-13 19:41:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:41:25,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:25,230 INFO L380 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] [2019-10-13 19:41:25,232 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2019-10-13 19:41:25,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:25,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544853699] [2019-10-13 19:41:25,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:25,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:25,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:25,941 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:26,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544853699] [2019-10-13 19:41:26,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:26,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:41:26,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709608019] [2019-10-13 19:41:26,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:41:26,102 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:26,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:41:26,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:41:26,121 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2019-10-13 19:41:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:27,205 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2019-10-13 19:41:27,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:41:27,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-13 19:41:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:27,229 INFO L225 Difference]: With dead ends: 276 [2019-10-13 19:41:27,230 INFO L226 Difference]: Without dead ends: 153 [2019-10-13 19:41:27,237 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:41:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-10-13 19:41:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2019-10-13 19:41:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-13 19:41:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2019-10-13 19:41:27,337 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2019-10-13 19:41:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:27,338 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2019-10-13 19:41:27,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:41:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2019-10-13 19:41:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:41:27,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:27,342 INFO L380 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] [2019-10-13 19:41:27,343 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2019-10-13 19:41:27,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:27,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738882185] [2019-10-13 19:41:27,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:27,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:27,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,814 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:27,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738882185] [2019-10-13 19:41:27,924 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:27,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:27,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053999352] [2019-10-13 19:41:27,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:27,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:27,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:27,927 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2019-10-13 19:41:28,334 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:28,704 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:41:29,021 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:29,288 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:30,425 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:31,640 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2019-10-13 19:41:31,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:41:31,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-10-13 19:41:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:31,652 INFO L225 Difference]: With dead ends: 423 [2019-10-13 19:41:31,652 INFO L226 Difference]: Without dead ends: 327 [2019-10-13 19:41:31,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:41:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-13 19:41:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2019-10-13 19:41:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-10-13 19:41:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2019-10-13 19:41:31,753 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2019-10-13 19:41:31,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:31,754 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2019-10-13 19:41:31,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2019-10-13 19:41:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 19:41:31,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:31,758 INFO L380 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] [2019-10-13 19:41:31,758 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:31,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:31,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2019-10-13 19:41:31,758 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:31,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373941179] [2019-10-13 19:41:31,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:31,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:31,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,118 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:32,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373941179] [2019-10-13 19:41:32,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:32,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:41:32,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667725305] [2019-10-13 19:41:32,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:41:32,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:32,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:41:32,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:41:32,240 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2019-10-13 19:41:32,619 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:34,117 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:34,732 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2019-10-13 19:41:34,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:41:34,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2019-10-13 19:41:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:34,744 INFO L225 Difference]: With dead ends: 782 [2019-10-13 19:41:34,744 INFO L226 Difference]: Without dead ends: 545 [2019-10-13 19:41:34,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:41:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2019-10-13 19:41:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2019-10-13 19:41:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-13 19:41:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2019-10-13 19:41:34,837 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2019-10-13 19:41:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:34,838 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2019-10-13 19:41:34,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:41:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2019-10-13 19:41:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:41:34,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:34,840 INFO L380 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] [2019-10-13 19:41:34,840 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:34,841 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2019-10-13 19:41:34,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:34,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548428306] [2019-10-13 19:41:34,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:34,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:34,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,168 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:41:35,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548428306] [2019-10-13 19:41:35,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:35,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:35,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718143512] [2019-10-13 19:41:35,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:35,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:35,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:35,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:35,256 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2019-10-13 19:41:35,813 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:36,572 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:37,488 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:37,864 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:38,363 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:38,630 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:39,261 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2019-10-13 19:41:39,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:41:39,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-10-13 19:41:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:39,267 INFO L225 Difference]: With dead ends: 948 [2019-10-13 19:41:39,267 INFO L226 Difference]: Without dead ends: 524 [2019-10-13 19:41:39,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:41:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-13 19:41:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2019-10-13 19:41:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-13 19:41:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2019-10-13 19:41:39,349 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2019-10-13 19:41:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:39,350 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2019-10-13 19:41:39,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2019-10-13 19:41:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:41:39,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:39,353 INFO L380 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] [2019-10-13 19:41:39,353 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:39,353 INFO L82 PathProgramCache]: Analyzing trace with hash 455917845, now seen corresponding path program 1 times [2019-10-13 19:41:39,353 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:39,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718601856] [2019-10-13 19:41:39,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:39,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:39,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,631 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:39,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718601856] [2019-10-13 19:41:39,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:39,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:41:39,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521279410] [2019-10-13 19:41:39,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:41:39,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:41:39,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:41:39,697 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 6 states. [2019-10-13 19:41:40,185 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:41,115 INFO L93 Difference]: Finished difference Result 770 states and 949 transitions. [2019-10-13 19:41:41,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:41:41,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-10-13 19:41:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:41,119 INFO L225 Difference]: With dead ends: 770 [2019-10-13 19:41:41,119 INFO L226 Difference]: Without dead ends: 453 [2019-10-13 19:41:41,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:41:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-13 19:41:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 380. [2019-10-13 19:41:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-13 19:41:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 448 transitions. [2019-10-13 19:41:41,185 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 448 transitions. Word has length 83 [2019-10-13 19:41:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:41,186 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 448 transitions. [2019-10-13 19:41:41,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:41:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 448 transitions. [2019-10-13 19:41:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:41:41,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:41,188 INFO L380 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] [2019-10-13 19:41:41,188 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:41,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:41,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2019-10-13 19:41:41,189 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:41,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429115757] [2019-10-13 19:41:41,189 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:41,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:41,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,519 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:41,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429115757] [2019-10-13 19:41:41,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:41,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:41,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295342291] [2019-10-13 19:41:41,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:41,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:41,683 INFO L87 Difference]: Start difference. First operand 380 states and 448 transitions. Second operand 9 states. [2019-10-13 19:41:42,187 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:43,237 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:43,508 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:41:43,823 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:44,131 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:45,116 INFO L93 Difference]: Finished difference Result 1150 states and 1510 transitions. [2019-10-13 19:41:45,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:41:45,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-13 19:41:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:45,124 INFO L225 Difference]: With dead ends: 1150 [2019-10-13 19:41:45,124 INFO L226 Difference]: Without dead ends: 798 [2019-10-13 19:41:45,126 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:41:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-10-13 19:41:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 681. [2019-10-13 19:41:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-10-13 19:41:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2019-10-13 19:41:45,275 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 87 [2019-10-13 19:41:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:45,276 INFO L462 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2019-10-13 19:41:45,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2019-10-13 19:41:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:41:45,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:45,282 INFO L380 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] [2019-10-13 19:41:45,283 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2019-10-13 19:41:45,284 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:45,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978981565] [2019-10-13 19:41:45,284 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:45,284 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:45,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,726 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:45,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978981565] [2019-10-13 19:41:45,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:45,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:41:45,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712888630] [2019-10-13 19:41:45,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:41:45,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:41:45,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:41:45,884 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2019-10-13 19:41:47,083 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:47,362 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:41:47,659 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:47,947 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:48,613 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2019-10-13 19:41:48,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:41:48,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-13 19:41:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:48,619 INFO L225 Difference]: With dead ends: 1456 [2019-10-13 19:41:48,619 INFO L226 Difference]: Without dead ends: 803 [2019-10-13 19:41:48,622 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:41:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-10-13 19:41:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2019-10-13 19:41:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-10-13 19:41:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2019-10-13 19:41:48,735 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2019-10-13 19:41:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:48,736 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2019-10-13 19:41:48,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:41:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2019-10-13 19:41:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:41:48,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:48,740 INFO L380 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] [2019-10-13 19:41:48,740 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:48,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2019-10-13 19:41:48,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:48,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163216241] [2019-10-13 19:41:48,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:48,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:48,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,080 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:49,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163216241] [2019-10-13 19:41:49,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:49,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:41:49,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401952250] [2019-10-13 19:41:49,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:41:49,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:41:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:41:49,273 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2019-10-13 19:41:50,257 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:50,522 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:50,774 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:51,576 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:51,859 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:52,116 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:52,883 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2019-10-13 19:41:52,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:41:52,883 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2019-10-13 19:41:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:52,888 INFO L225 Difference]: With dead ends: 1322 [2019-10-13 19:41:52,889 INFO L226 Difference]: Without dead ends: 649 [2019-10-13 19:41:52,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:41:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-13 19:41:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2019-10-13 19:41:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-10-13 19:41:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2019-10-13 19:41:52,985 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2019-10-13 19:41:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:52,986 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2019-10-13 19:41:52,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:41:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2019-10-13 19:41:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 19:41:52,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:52,989 INFO L380 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] [2019-10-13 19:41:52,989 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:52,990 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2019-10-13 19:41:52,990 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:52,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569834951] [2019-10-13 19:41:52,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:52,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:52,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,420 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:41:53,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569834951] [2019-10-13 19:41:53,577 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:41:53,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:41:53,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504570747] [2019-10-13 19:41:53,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:41:53,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:41:53,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:41:53,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:41:53,579 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2019-10-13 19:41:54,257 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:55,001 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:55,793 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:56,173 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:56,442 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:41:56,768 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:57,083 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:41:58,346 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:41:58,626 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:41:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:41:59,283 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2019-10-13 19:41:59,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-13 19:41:59,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-13 19:41:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:41:59,298 INFO L225 Difference]: With dead ends: 1645 [2019-10-13 19:41:59,298 INFO L226 Difference]: Without dead ends: 1269 [2019-10-13 19:41:59,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:41:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2019-10-13 19:41:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2019-10-13 19:41:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2019-10-13 19:41:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2019-10-13 19:41:59,483 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2019-10-13 19:41:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:41:59,485 INFO L462 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2019-10-13 19:41:59,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:41:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2019-10-13 19:41:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 19:41:59,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:41:59,488 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:41:59,489 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:41:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:41:59,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2019-10-13 19:41:59,489 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:41:59,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376397652] [2019-10-13 19:41:59,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:59,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:41:59,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:41:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,801 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:41:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:41:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 19:42:00,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376397652] [2019-10-13 19:42:00,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371308228] [2019-10-13 19:42:00,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:42:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:00,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:42:00,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:42:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:42:00,453 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:42:00,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-13 19:42:00,454 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581084871] [2019-10-13 19:42:00,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:42:00,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:00,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:42:00,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:42:00,455 INFO L87 Difference]: Start difference. First operand 1155 states and 1335 transitions. Second operand 20 states.