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_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:11,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:11,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:11,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:11,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:11,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:11,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:11,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:11,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:11,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:11,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:11,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:11,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:11,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:11,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:11,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:11,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:11,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:11,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:11,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:11,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:11,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:11,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:11,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:11,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:11,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:11,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:11,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:11,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:11,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:11,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:11,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:11,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:11,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:11,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:11,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:11,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:11,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:11,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:11,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:11,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:11,812 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 [2019-10-14 23:36:11,835 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:11,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:11,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:11,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:11,837 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:11,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:11,838 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:11,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:11,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:11,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:11,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:11,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:11,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:11,841 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:11,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:11,841 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:11,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:11,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:11,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:11,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:11,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:11,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:11,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:11,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:11,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:11,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:11,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:11,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:11,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:12,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:12,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:12,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:12,112 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:12,112 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:12,113 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product58.cil.c [2019-10-14 23:36:12,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b79ca634/2f5011feacfc469285c0dbe97bc9ff9e/FLAGb4e3bb91d [2019-10-14 23:36:12,760 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:12,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product58.cil.c [2019-10-14 23:36:12,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b79ca634/2f5011feacfc469285c0dbe97bc9ff9e/FLAGb4e3bb91d [2019-10-14 23:36:13,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b79ca634/2f5011feacfc469285c0dbe97bc9ff9e [2019-10-14 23:36:13,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:13,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:13,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:13,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:13,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:13,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1dcce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13, skipping insertion in model container [2019-10-14 23:36:13,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,063 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:13,109 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:13,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:13,548 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:13,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:13,683 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:13,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13 WrapperNode [2019-10-14 23:36:13,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:13,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:13,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:13,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:13,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:13,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:13,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:13,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:13,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (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 [2019-10-14 23:36:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:36:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:15,053 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:15,053 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:15,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:15 BoogieIcfgContainer [2019-10-14 23:36:15,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:15,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:15,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:15,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:15,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:13" (1/3) ... [2019-10-14 23:36:15,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94c7026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:15, skipping insertion in model container [2019-10-14 23:36:15,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13" (2/3) ... [2019-10-14 23:36:15,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94c7026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:15, skipping insertion in model container [2019-10-14 23:36:15,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:15" (3/3) ... [2019-10-14 23:36:15,063 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product58.cil.c [2019-10-14 23:36:15,073 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:15,081 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:15,093 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:15,124 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:15,124 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:15,124 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:15,125 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:15,125 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:15,126 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:15,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:15,126 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-10-14 23:36:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:36:15,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:15,173 INFO L380 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] [2019-10-14 23:36:15,175 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash 596163892, now seen corresponding path program 1 times [2019-10-14 23:36:15,188 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:15,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780192609] [2019-10-14 23:36:15,189 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,189 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,831 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:15,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780192609] [2019-10-14 23:36:15,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:15,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:15,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837126328] [2019-10-14 23:36:15,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:15,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:15,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:15,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:15,994 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 4 states. [2019-10-14 23:36:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:17,182 INFO L93 Difference]: Finished difference Result 332 states and 427 transitions. [2019-10-14 23:36:17,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:36:17,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:36:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:17,201 INFO L225 Difference]: With dead ends: 332 [2019-10-14 23:36:17,201 INFO L226 Difference]: Without dead ends: 184 [2019-10-14 23:36:17,211 INFO L600 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 [2019-10-14 23:36:17,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-10-14 23:36:17,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 149. [2019-10-14 23:36:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-14 23:36:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2019-10-14 23:36:17,326 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 51 [2019-10-14 23:36:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:17,326 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2019-10-14 23:36:17,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2019-10-14 23:36:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:17,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:17,331 INFO L380 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] [2019-10-14 23:36:17,331 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2035101120, now seen corresponding path program 1 times [2019-10-14 23:36:17,332 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:17,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039274632] [2019-10-14 23:36:17,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:17,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:17,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,708 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:17,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039274632] [2019-10-14 23:36:17,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:17,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:36:17,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571470577] [2019-10-14 23:36:17,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:36:17,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:17,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:36:17,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:17,820 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 5 states. [2019-10-14 23:36:18,397 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:19,535 INFO L93 Difference]: Finished difference Result 273 states and 334 transitions. [2019-10-14 23:36:19,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:36:19,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:36:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:19,539 INFO L225 Difference]: With dead ends: 273 [2019-10-14 23:36:19,539 INFO L226 Difference]: Without dead ends: 174 [2019-10-14 23:36:19,541 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-14 23:36:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2019-10-14 23:36:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-14 23:36:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2019-10-14 23:36:19,604 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 52 [2019-10-14 23:36:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:19,605 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2019-10-14 23:36:19,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:36:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2019-10-14 23:36:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:36:19,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:19,615 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:19,615 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:19,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2037013755, now seen corresponding path program 1 times [2019-10-14 23:36:19,616 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:19,616 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111778759] [2019-10-14 23:36:19,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:19,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:19,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,039 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:20,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111778759] [2019-10-14 23:36:20,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:20,161 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:20,161 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613966950] [2019-10-14 23:36:20,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:20,162 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:20,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:20,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:20,163 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 9 states. [2019-10-14 23:36:20,628 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:20,977 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:21,255 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:21,523 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:23,046 INFO L93 Difference]: Finished difference Result 286 states and 353 transitions. [2019-10-14 23:36:23,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:36:23,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-14 23:36:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:23,052 INFO L225 Difference]: With dead ends: 286 [2019-10-14 23:36:23,053 INFO L226 Difference]: Without dead ends: 174 [2019-10-14 23:36:23,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:36:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-14 23:36:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2019-10-14 23:36:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-14 23:36:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions. [2019-10-14 23:36:23,099 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 57 [2019-10-14 23:36:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:23,099 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions. [2019-10-14 23:36:23,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions. [2019-10-14 23:36:23,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:36:23,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:23,102 INFO L380 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, 1, 1, 1, 1] [2019-10-14 23:36:23,102 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:23,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:23,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1760955875, now seen corresponding path program 1 times [2019-10-14 23:36:23,103 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:23,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498213596] [2019-10-14 23:36:23,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:23,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:23,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,414 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:23,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498213596] [2019-10-14 23:36:23,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:23,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:36:23,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054461856] [2019-10-14 23:36:23,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:36:23,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:36:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:23,530 INFO L87 Difference]: Start difference. First operand 140 states and 161 transitions. Second operand 7 states. [2019-10-14 23:36:23,893 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:25,119 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:25,913 INFO L93 Difference]: Finished difference Result 385 states and 481 transitions. [2019-10-14 23:36:25,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:25,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-10-14 23:36:25,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:25,917 INFO L225 Difference]: With dead ends: 385 [2019-10-14 23:36:25,918 INFO L226 Difference]: Without dead ends: 273 [2019-10-14 23:36:25,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-14 23:36:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 224. [2019-10-14 23:36:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-10-14 23:36:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 256 transitions. [2019-10-14 23:36:25,968 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 256 transitions. Word has length 70 [2019-10-14 23:36:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:25,969 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 256 transitions. [2019-10-14 23:36:25,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:36:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 256 transitions. [2019-10-14 23:36:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:36:25,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:25,971 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:25,971 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 454740656, now seen corresponding path program 1 times [2019-10-14 23:36:25,972 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:25,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219114749] [2019-10-14 23:36:25,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,270 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:26,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219114749] [2019-10-14 23:36:26,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:26,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:26,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301554833] [2019-10-14 23:36:26,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:26,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:26,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:26,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:26,375 INFO L87 Difference]: Start difference. First operand 224 states and 256 transitions. Second operand 9 states. [2019-10-14 23:36:27,097 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:28,330 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:28,712 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:29,396 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:29,664 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:31,036 INFO L93 Difference]: Finished difference Result 668 states and 834 transitions. [2019-10-14 23:36:31,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:36:31,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-10-14 23:36:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:31,044 INFO L225 Difference]: With dead ends: 668 [2019-10-14 23:36:31,044 INFO L226 Difference]: Without dead ends: 472 [2019-10-14 23:36:31,045 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-10-14 23:36:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 396. [2019-10-14 23:36:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2019-10-14 23:36:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 452 transitions. [2019-10-14 23:36:31,129 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 452 transitions. Word has length 84 [2019-10-14 23:36:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:31,129 INFO L462 AbstractCegarLoop]: Abstraction has 396 states and 452 transitions. [2019-10-14 23:36:31,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:31,130 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 452 transitions. [2019-10-14 23:36:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:31,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:31,131 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:31,132 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1923981492, now seen corresponding path program 1 times [2019-10-14 23:36:31,132 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:31,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959350677] [2019-10-14 23:36:31,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:31,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:31,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,445 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:31,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959350677] [2019-10-14 23:36:31,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:31,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:31,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392879053] [2019-10-14 23:36:31,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:31,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:31,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:31,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:31,574 INFO L87 Difference]: Start difference. First operand 396 states and 452 transitions. Second operand 10 states. [2019-10-14 23:36:32,082 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:33,553 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:34,895 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,172 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,478 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:35,852 INFO L93 Difference]: Finished difference Result 878 states and 1079 transitions. [2019-10-14 23:36:35,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:35,853 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:36:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:35,858 INFO L225 Difference]: With dead ends: 878 [2019-10-14 23:36:35,858 INFO L226 Difference]: Without dead ends: 510 [2019-10-14 23:36:35,860 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:36:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-14 23:36:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 395. [2019-10-14 23:36:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2019-10-14 23:36:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2019-10-14 23:36:35,938 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 88 [2019-10-14 23:36:35,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:35,938 INFO L462 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2019-10-14 23:36:35,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2019-10-14 23:36:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:36:35,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:35,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:35,941 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:35,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:35,942 INFO L82 PathProgramCache]: Analyzing trace with hash -282041291, now seen corresponding path program 1 times [2019-10-14 23:36:35,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:35,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646033836] [2019-10-14 23:36:35,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:35,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:35,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,209 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:36,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646033836] [2019-10-14 23:36:36,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:36,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:36,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054777390] [2019-10-14 23:36:36,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:36,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:36,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:36,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:36,367 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 10 states. [2019-10-14 23:36:37,551 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:37,826 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:38,102 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:38,367 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:39,577 INFO L93 Difference]: Finished difference Result 885 states and 1108 transitions. [2019-10-14 23:36:39,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:39,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2019-10-14 23:36:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:39,582 INFO L225 Difference]: With dead ends: 885 [2019-10-14 23:36:39,582 INFO L226 Difference]: Without dead ends: 518 [2019-10-14 23:36:39,583 INFO L600 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 [2019-10-14 23:36:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2019-10-14 23:36:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 405. [2019-10-14 23:36:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2019-10-14 23:36:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 459 transitions. [2019-10-14 23:36:39,657 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 459 transitions. Word has length 104 [2019-10-14 23:36:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:39,657 INFO L462 AbstractCegarLoop]: Abstraction has 405 states and 459 transitions. [2019-10-14 23:36:39,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 459 transitions. [2019-10-14 23:36:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:36:39,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:39,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:39,660 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:39,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1646231411, now seen corresponding path program 1 times [2019-10-14 23:36:39,660 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:39,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031644250] [2019-10-14 23:36:39,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,935 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:40,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031644250] [2019-10-14 23:36:40,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:40,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:40,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873680307] [2019-10-14 23:36:40,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:40,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:40,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:40,093 INFO L87 Difference]: Start difference. First operand 405 states and 459 transitions. Second operand 12 states. [2019-10-14 23:36:40,762 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,062 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,336 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,108 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,384 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,650 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:44,230 INFO L93 Difference]: Finished difference Result 905 states and 1130 transitions. [2019-10-14 23:36:44,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:44,234 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2019-10-14 23:36:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:44,238 INFO L225 Difference]: With dead ends: 905 [2019-10-14 23:36:44,238 INFO L226 Difference]: Without dead ends: 528 [2019-10-14 23:36:44,242 INFO L600 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 [2019-10-14 23:36:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2019-10-14 23:36:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2019-10-14 23:36:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-10-14 23:36:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 467 transitions. [2019-10-14 23:36:44,339 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 467 transitions. Word has length 104 [2019-10-14 23:36:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:44,340 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 467 transitions. [2019-10-14 23:36:44,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 467 transitions. [2019-10-14 23:36:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:36:44,344 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:44,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:44,344 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:44,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1405691282, now seen corresponding path program 1 times [2019-10-14 23:36:44,345 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:44,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174619000] [2019-10-14 23:36:44,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:44,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:44,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,642 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:44,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174619000] [2019-10-14 23:36:44,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:44,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:44,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359230407] [2019-10-14 23:36:44,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:44,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:44,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:44,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:44,781 INFO L87 Difference]: Start difference. First operand 413 states and 467 transitions. Second operand 8 states. [2019-10-14 23:36:45,529 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:46,139 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:48,749 INFO L93 Difference]: Finished difference Result 1253 states and 1617 transitions. [2019-10-14 23:36:48,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:48,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-10-14 23:36:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:48,756 INFO L225 Difference]: With dead ends: 1253 [2019-10-14 23:36:48,756 INFO L226 Difference]: Without dead ends: 868 [2019-10-14 23:36:48,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:36:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2019-10-14 23:36:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 723. [2019-10-14 23:36:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-10-14 23:36:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 845 transitions. [2019-10-14 23:36:48,885 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 845 transitions. Word has length 104 [2019-10-14 23:36:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:48,886 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 845 transitions. [2019-10-14 23:36:48,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 845 transitions. [2019-10-14 23:36:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-14 23:36:48,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:48,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:48,889 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:48,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1820843884, now seen corresponding path program 1 times [2019-10-14 23:36:48,890 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:48,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675352616] [2019-10-14 23:36:48,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:48,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:48,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,314 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:36:49,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675352616] [2019-10-14 23:36:49,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970383489] [2019-10-14 23:36:49,631 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 [2019-10-14 23:36:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:36:49,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:36:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:50,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:36:50,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-14 23:36:50,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869744359] [2019-10-14 23:36:50,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:50,196 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:50,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:50,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:50,197 INFO L87 Difference]: Start difference. First operand 723 states and 845 transitions. Second operand 8 states. [2019-10-14 23:36:50,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:50,604 INFO L93 Difference]: Finished difference Result 1383 states and 1626 transitions. [2019-10-14 23:36:50,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:36:50,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-14 23:36:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:50,608 INFO L225 Difference]: With dead ends: 1383 [2019-10-14 23:36:50,609 INFO L226 Difference]: Without dead ends: 688 [2019-10-14 23:36:50,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-14 23:36:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2019-10-14 23:36:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-14 23:36:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 789 transitions. [2019-10-14 23:36:50,737 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 789 transitions. Word has length 108 [2019-10-14 23:36:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:50,738 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 789 transitions. [2019-10-14 23:36:50,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 789 transitions. [2019-10-14 23:36:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-14 23:36:50,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:50,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:50,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:36:50,947 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash -891659702, now seen corresponding path program 1 times [2019-10-14 23:36:50,948 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:50,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301802413] [2019-10-14 23:36:50,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:50,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:50,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,262 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat