/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:58:14,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:58:14,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:58:14,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:58:14,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:58:14,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:58:14,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:58:14,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:58:14,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:58:14,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:58:14,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:58:14,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:58:14,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:58:14,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:58:14,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:58:14,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:58:14,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:58:14,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:58:14,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:58:14,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:58:14,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:58:14,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:58:14,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:58:14,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:58:14,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:58:14,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:58:14,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:58:14,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:58:14,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:58:14,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:58:14,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:58:14,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:58:14,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:58:14,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:58:14,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:58:14,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:58:14,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:58:14,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:58:14,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:58:14,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:58:14,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:58:14,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:58:14,839 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:58:14,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:58:14,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:58:14,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:58:14,840 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:58:14,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:58:14,841 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:58:14,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:58:14,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:58:14,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:58:14,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:58:14,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:58:14,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:58:14,843 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:58:14,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:58:14,843 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:58:14,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:58:14,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:58:14,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:58:14,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:58:14,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:58:14,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:58:14,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:58:14,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:58:14,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:58:14,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:58:14,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:58:14,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:58:14,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:58:15,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:58:15,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:58:15,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:58:15,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:58:15,127 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:58:15,128 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2019-11-06 21:58:15,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/735856f46/8c1b1ca7fb734cf7baa00831d94dd170/FLAG04ab70d69 [2019-11-06 21:58:15,738 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:58:15,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2019-11-06 21:58:15,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/735856f46/8c1b1ca7fb734cf7baa00831d94dd170/FLAG04ab70d69 [2019-11-06 21:58:16,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/735856f46/8c1b1ca7fb734cf7baa00831d94dd170 [2019-11-06 21:58:16,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:58:16,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:58:16,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:16,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:58:16,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:58:16,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9ed951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16, skipping insertion in model container [2019-11-06 21:58:16,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,049 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:58:16,101 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:58:16,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:16,572 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:58:16,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:16,720 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:58:16,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16 WrapperNode [2019-11-06 21:58:16,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:16,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:58:16,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:58:16,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:58:16,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... [2019-11-06 21:58:16,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:58:16,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:58:16,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:58:16,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:58:16,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:58:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:58:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:58:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:58:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:58:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:58:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:58:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:58:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:58:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:58:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:58:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:58:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:58:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:58:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:58:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:58:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:58:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-11-06 21:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:58:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:58:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:58:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 21:58:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:58:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:58:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:58:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:58:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:58:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:58:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:58:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:58:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:58:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:58:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:58:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:58:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:58:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:58:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:58:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:58:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:58:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:58:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:58:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:58:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:58:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:58:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:58:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:58:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:58:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:58:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:58:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:58:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:58:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:58:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-11-06 21:58:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:58:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:58:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:58:18,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:58:18,125 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:58:18,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:18 BoogieIcfgContainer [2019-11-06 21:58:18,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:58:18,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:58:18,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:58:18,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:58:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:16" (1/3) ... [2019-11-06 21:58:18,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c94088a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:18, skipping insertion in model container [2019-11-06 21:58:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:16" (2/3) ... [2019-11-06 21:58:18,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c94088a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:18, skipping insertion in model container [2019-11-06 21:58:18,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:18" (3/3) ... [2019-11-06 21:58:18,137 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2019-11-06 21:58:18,146 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:58:18,155 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:58:18,167 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:58:18,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:58:18,205 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:58:18,205 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:58:18,205 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:58:18,206 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:58:18,206 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:58:18,206 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:58:18,206 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:58:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-11-06 21:58:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:58:18,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:18,239 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:18,241 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:18,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1859141612, now seen corresponding path program 1 times [2019-11-06 21:58:18,257 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:18,257 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711286286] [2019-11-06 21:58:18,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:18,954 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:19,065 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711286286] [2019-11-06 21:58:19,066 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:19,067 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:58:19,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569176874] [2019-11-06 21:58:19,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:58:19,083 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:58:19,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:19,102 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 4 states. [2019-11-06 21:58:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:20,362 INFO L93 Difference]: Finished difference Result 317 states and 416 transitions. [2019-11-06 21:58:20,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:58:20,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:58:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:20,379 INFO L225 Difference]: With dead ends: 317 [2019-11-06 21:58:20,379 INFO L226 Difference]: Without dead ends: 177 [2019-11-06 21:58:20,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-06 21:58:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2019-11-06 21:58:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-06 21:58:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2019-11-06 21:58:20,477 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 51 [2019-11-06 21:58:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:20,478 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2019-11-06 21:58:20,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:58:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2019-11-06 21:58:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:58:20,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:20,482 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:20,483 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:20,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2121847036, now seen corresponding path program 1 times [2019-11-06 21:58:20,483 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:20,484 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121815348] [2019-11-06 21:58:20,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,831 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:20,885 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121815348] [2019-11-06 21:58:20,885 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:20,885 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:58:20,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815905564] [2019-11-06 21:58:20,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:58:20,888 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:20,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:58:20,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:58:20,888 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 5 states. [2019-11-06 21:58:21,412 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:22,425 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2019-11-06 21:58:22,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:58:22,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:58:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:22,430 INFO L225 Difference]: With dead ends: 256 [2019-11-06 21:58:22,431 INFO L226 Difference]: Without dead ends: 167 [2019-11-06 21:58:22,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:58:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-11-06 21:58:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2019-11-06 21:58:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-06 21:58:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2019-11-06 21:58:22,476 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 52 [2019-11-06 21:58:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:22,476 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2019-11-06 21:58:22,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:58:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2019-11-06 21:58:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 21:58:22,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:22,479 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:22,479 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash 51071948, now seen corresponding path program 1 times [2019-11-06 21:58:22,480 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:22,480 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173162005] [2019-11-06 21:58:22,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,802 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:22,950 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173162005] [2019-11-06 21:58:22,950 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:22,951 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:22,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369778659] [2019-11-06 21:58:22,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:22,952 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:22,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:22,953 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 9 states. [2019-11-06 21:58:23,440 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:23,789 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 21:58:24,061 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:24,328 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:25,219 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:27,505 INFO L93 Difference]: Finished difference Result 448 states and 568 transitions. [2019-11-06 21:58:27,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:58:27,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-11-06 21:58:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:27,511 INFO L225 Difference]: With dead ends: 448 [2019-11-06 21:58:27,512 INFO L226 Difference]: Without dead ends: 344 [2019-11-06 21:58:27,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:58:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-11-06 21:58:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 279. [2019-11-06 21:58:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-11-06 21:58:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2019-11-06 21:58:27,582 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 56 [2019-11-06 21:58:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:27,583 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2019-11-06 21:58:27,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2019-11-06 21:58:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-06 21:58:27,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:27,586 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:27,587 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1476511447, now seen corresponding path program 1 times [2019-11-06 21:58:27,587 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:27,588 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843507150] [2019-11-06 21:58:27,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:27,933 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:28,041 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843507150] [2019-11-06 21:58:28,042 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:28,042 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:28,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589367551] [2019-11-06 21:58:28,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:28,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:28,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:28,049 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand 9 states. [2019-11-06 21:58:28,508 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:29,662 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:30,135 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:30,539 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:30,888 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:32,501 INFO L93 Difference]: Finished difference Result 895 states and 1185 transitions. [2019-11-06 21:58:32,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:58:32,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-11-06 21:58:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:32,512 INFO L225 Difference]: With dead ends: 895 [2019-11-06 21:58:32,512 INFO L226 Difference]: Without dead ends: 644 [2019-11-06 21:58:32,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:58:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-06 21:58:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 506. [2019-11-06 21:58:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2019-11-06 21:58:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 624 transitions. [2019-11-06 21:58:32,644 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 624 transitions. Word has length 62 [2019-11-06 21:58:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:32,645 INFO L462 AbstractCegarLoop]: Abstraction has 506 states and 624 transitions. [2019-11-06 21:58:32,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 624 transitions. [2019-11-06 21:58:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 21:58:32,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:32,648 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:32,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1658122107, now seen corresponding path program 1 times [2019-11-06 21:58:32,649 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:32,650 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583518776] [2019-11-06 21:58:32,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,977 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:33,133 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583518776] [2019-11-06 21:58:33,133 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:33,134 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:33,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175655401] [2019-11-06 21:58:33,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:33,136 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:33,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:33,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:33,137 INFO L87 Difference]: Start difference. First operand 506 states and 624 transitions. Second operand 10 states. [2019-11-06 21:58:33,641 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:34,788 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:35,109 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:35,438 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:36,247 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:37,561 INFO L93 Difference]: Finished difference Result 1423 states and 1942 transitions. [2019-11-06 21:58:37,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-06 21:58:37,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-11-06 21:58:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:37,574 INFO L225 Difference]: With dead ends: 1423 [2019-11-06 21:58:37,574 INFO L226 Difference]: Without dead ends: 945 [2019-11-06 21:58:37,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-11-06 21:58:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-11-06 21:58:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 749. [2019-11-06 21:58:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-11-06 21:58:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 911 transitions. [2019-11-06 21:58:37,771 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 911 transitions. Word has length 66 [2019-11-06 21:58:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:37,772 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 911 transitions. [2019-11-06 21:58:37,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 911 transitions. [2019-11-06 21:58:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 21:58:37,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:37,779 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:37,779 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1979078966, now seen corresponding path program 1 times [2019-11-06 21:58:37,780 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:37,780 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399221153] [2019-11-06 21:58:37,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,092 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:58:38,266 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399221153] [2019-11-06 21:58:38,266 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:38,267 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:38,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113209758] [2019-11-06 21:58:38,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:38,268 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:38,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:38,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:38,268 INFO L87 Difference]: Start difference. First operand 749 states and 911 transitions. Second operand 10 states. [2019-11-06 21:58:38,764 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:39,909 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:40,196 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 21:58:40,516 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:40,826 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 21:58:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:43,049 INFO L93 Difference]: Finished difference Result 2518 states and 3561 transitions. [2019-11-06 21:58:43,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 21:58:43,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-11-06 21:58:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:43,066 INFO L225 Difference]: With dead ends: 2518 [2019-11-06 21:58:43,066 INFO L226 Difference]: Without dead ends: 1797 [2019-11-06 21:58:43,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2019-11-06 21:58:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-11-06 21:58:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1359. [2019-11-06 21:58:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2019-11-06 21:58:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1650 transitions. [2019-11-06 21:58:43,368 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1650 transitions. Word has length 103 [2019-11-06 21:58:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:43,371 INFO L462 AbstractCegarLoop]: Abstraction has 1359 states and 1650 transitions. [2019-11-06 21:58:43,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1650 transitions. [2019-11-06 21:58:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 21:58:43,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:43,375 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:43,375 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:43,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1738538837, now seen corresponding path program 1 times [2019-11-06 21:58:43,376 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:43,376 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086940566] [2019-11-06 21:58:43,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,693 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:58:43,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086940566] [2019-11-06 21:58:43,876 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:43,876 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:43,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790810732] [2019-11-06 21:58:43,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:43,878 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:43,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:43,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:43,880 INFO L87 Difference]: Start difference. First operand 1359 states and 1650 transitions. Second operand 10 states. [2019-11-06 21:58:45,202 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:45,477 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 21:58:45,773 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:46,058 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:47,375 INFO L93 Difference]: Finished difference Result 3144 states and 4258 transitions. [2019-11-06 21:58:47,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:58:47,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-11-06 21:58:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:47,389 INFO L225 Difference]: With dead ends: 3144 [2019-11-06 21:58:47,389 INFO L226 Difference]: Without dead ends: 1813 [2019-11-06 21:58:47,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:58:47,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2019-11-06 21:58:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1399. [2019-11-06 21:58:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2019-11-06 21:58:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1690 transitions. [2019-11-06 21:58:47,616 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1690 transitions. Word has length 103 [2019-11-06 21:58:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:47,617 INFO L462 AbstractCegarLoop]: Abstraction has 1399 states and 1690 transitions. [2019-11-06 21:58:47,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1690 transitions. [2019-11-06 21:58:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 21:58:47,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:47,621 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:47,621 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash 189733865, now seen corresponding path program 1 times [2019-11-06 21:58:47,622 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:47,622 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216728144] [2019-11-06 21:58:47,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,889 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:58:48,053 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216728144] [2019-11-06 21:58:48,054 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:48,054 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:58:48,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367279405] [2019-11-06 21:58:48,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:58:48,055 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:58:48,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:58:48,055 INFO L87 Difference]: Start difference. First operand 1399 states and 1690 transitions. Second operand 12 states. [2019-11-06 21:58:48,690 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:48,947 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:49,204 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:50,046 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:50,348 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:50,614 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:52,067 INFO L93 Difference]: Finished difference Result 2768 states and 3642 transitions. [2019-11-06 21:58:52,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:58:52,068 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2019-11-06 21:58:52,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:52,078 INFO L225 Difference]: With dead ends: 2768 [2019-11-06 21:58:52,078 INFO L226 Difference]: Without dead ends: 1397 [2019-11-06 21:58:52,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:58:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2019-11-06 21:58:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1119. [2019-11-06 21:58:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2019-11-06 21:58:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1322 transitions. [2019-11-06 21:58:52,328 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1322 transitions. Word has length 103 [2019-11-06 21:58:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:52,329 INFO L462 AbstractCegarLoop]: Abstraction has 1119 states and 1322 transitions. [2019-11-06 21:58:52,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:58:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1322 transitions. [2019-11-06 21:58:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 21:58:52,335 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:52,336 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:52,336 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -237992882, now seen corresponding path program 1 times [2019-11-06 21:58:52,337 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:52,337 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233797876] [2019-11-06 21:58:52,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,662 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:58:52,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233797876] [2019-11-06 21:58:52,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348490632] [2019-11-06 21:58:52,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:58:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:58:53,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:58:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:53,350 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:58:53,350 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-11-06 21:58:53,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044710449] [2019-11-06 21:58:53,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:58:53,351 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:53,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:58:53,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:58:53,352 INFO L87 Difference]: Start difference. First operand 1119 states and 1322 transitions. Second operand 8 states. [2019-11-06 21:58:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:53,972 INFO L93 Difference]: Finished difference Result 2184 states and 2596 transitions. [2019-11-06 21:58:53,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:58:53,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-11-06 21:58:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:53,979 INFO L225 Difference]: With dead ends: 2184 [2019-11-06 21:58:53,980 INFO L226 Difference]: Without dead ends: 1093 [2019-11-06 21:58:53,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:58:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2019-11-06 21:58:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1093. [2019-11-06 21:58:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2019-11-06 21:58:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1269 transitions. [2019-11-06 21:58:54,220 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1269 transitions. Word has length 107 [2019-11-06 21:58:54,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:54,221 INFO L462 AbstractCegarLoop]: Abstraction has 1093 states and 1269 transitions. [2019-11-06 21:58:54,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:58:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1269 transitions. [2019-11-06 21:58:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-06 21:58:54,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:54,227 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:54,433 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:58:54,433 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash 926596768, now seen corresponding path program 1 times [2019-11-06 21:58:54,434 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:54,434 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163429765] [2019-11-06 21:58:54,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat