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_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:35:00,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:35:00,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:35:00,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:35:00,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:35:00,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:35:00,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:35:00,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:35:00,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:35:00,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:35:00,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:35:00,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:35:00,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:35:00,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:35:00,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:35:00,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:35:00,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:35:00,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:35:00,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:35:00,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:35:00,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:35:00,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:35:00,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:35:00,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:35:00,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:35:00,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:35:00,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:35:00,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:35:00,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:35:00,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:35:00,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:35:00,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:35:00,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:35:00,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:35:00,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:35:00,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:35:00,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:35:00,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:35:00,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:35:00,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:35:00,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:35:00,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:35:00,715 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:35:00,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:35:00,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:35:00,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:35:00,719 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:35:00,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:35:00,720 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:35:00,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:35:00,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:35:00,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:35:00,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:35:00,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:35:00,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:35:00,721 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:35:00,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:35:00,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:35:00,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:35:00,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:35:00,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:35:00,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:35:00,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:35:00,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:35:00,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:35:00,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:35:00,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:35:00,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:35:00,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:35:00,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:35:00,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:35:01,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:35:01,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:35:01,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:35:01,112 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:35:01,112 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:35:01,113 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2019-10-13 19:35:01,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631256e50/adc9310454e541d1b7de2981e28e5648/FLAGf9b81c4f1 [2019-10-13 19:35:01,772 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:35:01,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2019-10-13 19:35:01,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631256e50/adc9310454e541d1b7de2981e28e5648/FLAGf9b81c4f1 [2019-10-13 19:35:02,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631256e50/adc9310454e541d1b7de2981e28e5648 [2019-10-13 19:35:02,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:35:02,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:35:02,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:35:02,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:35:02,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:35:02,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2bbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02, skipping insertion in model container [2019-10-13 19:35:02,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,059 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:35:02,116 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:35:02,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:35:02,574 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:35:02,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:35:02,736 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:35:02,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02 WrapperNode [2019-10-13 19:35:02,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:35:02,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:35:02,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:35:02,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:35:02,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:35:02,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:35:02,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:35:02,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:35:02,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:35:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:35:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:35:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:35:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:35:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:35:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:35:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:35:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:35:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:35:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:35:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:35:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:35:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:35:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:35:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:35:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:35:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:35:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:35:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:35:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:35:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:35:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:35:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:35:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:35:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:35:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:35:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:35:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:35:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:35:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:35:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:35:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:35:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:35:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:35:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:35:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:35:02,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:35:02,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:35:02,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:35:02,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:35:02,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:35:02,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:35:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:35:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:35:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:35:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:35:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:35:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:35:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:35:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:35:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:35:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:35:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:35:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:35:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:35:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:35:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:35:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:35:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:35:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:35:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:35:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:35:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:35:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:35:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:35:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:35:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:35:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:35:03,959 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:35:03,960 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:35:03,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:03 BoogieIcfgContainer [2019-10-13 19:35:03,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:35:03,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:35:03,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:35:03,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:35:03,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:35:02" (1/3) ... [2019-10-13 19:35:03,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8c88dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:03, skipping insertion in model container [2019-10-13 19:35:03,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02" (2/3) ... [2019-10-13 19:35:03,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8c88dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:03, skipping insertion in model container [2019-10-13 19:35:03,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:03" (3/3) ... [2019-10-13 19:35:03,972 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2019-10-13 19:35:03,982 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:35:03,991 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:35:04,003 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:35:04,041 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:35:04,041 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:35:04,041 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:35:04,041 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:35:04,042 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:35:04,042 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:35:04,042 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:35:04,042 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:35:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-13 19:35:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:35:04,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:04,076 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] [2019-10-13 19:35:04,078 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2019-10-13 19:35:04,091 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:04,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069874795] [2019-10-13 19:35:04,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:04,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:04,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,766 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:04,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069874795] [2019-10-13 19:35:04,883 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:04,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:35:04,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323402058] [2019-10-13 19:35:04,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:35:04,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:35:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:35:04,908 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-10-13 19:35:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:06,195 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2019-10-13 19:35:06,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:35:06,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:35:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:06,235 INFO L225 Difference]: With dead ends: 345 [2019-10-13 19:35:06,236 INFO L226 Difference]: Without dead ends: 186 [2019-10-13 19:35:06,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:35:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-13 19:35:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2019-10-13 19:35:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-13 19:35:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2019-10-13 19:35:06,361 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2019-10-13 19:35:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:06,362 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2019-10-13 19:35:06,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:35:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2019-10-13 19:35:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:35:06,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:06,374 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] [2019-10-13 19:35:06,374 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:06,375 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2019-10-13 19:35:06,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:06,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68922711] [2019-10-13 19:35:06,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:06,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:06,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,749 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:06,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68922711] [2019-10-13 19:35:06,783 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:06,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:35:06,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349486450] [2019-10-13 19:35:06,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:35:06,786 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:06,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:35:06,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:35:06,787 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2019-10-13 19:35:07,291 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:08,348 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2019-10-13 19:35:08,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:35:08,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:35:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:08,352 INFO L225 Difference]: With dead ends: 278 [2019-10-13 19:35:08,352 INFO L226 Difference]: Without dead ends: 170 [2019-10-13 19:35:08,354 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:35:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-13 19:35:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2019-10-13 19:35:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:35:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2019-10-13 19:35:08,413 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2019-10-13 19:35:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:08,413 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2019-10-13 19:35:08,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:35:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2019-10-13 19:35:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:35:08,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:08,418 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] [2019-10-13 19:35:08,418 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:08,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2019-10-13 19:35:08,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:08,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647576517] [2019-10-13 19:35:08,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:08,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:08,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,794 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:08,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647576517] [2019-10-13 19:35:08,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:08,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:08,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028282109] [2019-10-13 19:35:08,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:08,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:08,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:08,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:08,900 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2019-10-13 19:35:09,386 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:09,737 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:35:10,022 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:10,285 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:11,812 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2019-10-13 19:35:11,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:11,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:35:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:11,816 INFO L225 Difference]: With dead ends: 287 [2019-10-13 19:35:11,816 INFO L226 Difference]: Without dead ends: 170 [2019-10-13 19:35:11,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:35:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-13 19:35:11,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2019-10-13 19:35:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:35:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2019-10-13 19:35:11,852 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2019-10-13 19:35:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:11,852 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2019-10-13 19:35:11,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2019-10-13 19:35:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-13 19:35:11,854 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:11,855 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] [2019-10-13 19:35:11,855 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:11,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2019-10-13 19:35:11,856 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:11,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842292935] [2019-10-13 19:35:11,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:11,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:11,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,198 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:12,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842292935] [2019-10-13 19:35:12,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:12,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:35:12,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920347518] [2019-10-13 19:35:12,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:35:12,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:12,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:35:12,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:35:12,286 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2019-10-13 19:35:12,601 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:13,770 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:14,601 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2019-10-13 19:35:14,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:14,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-10-13 19:35:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:14,605 INFO L225 Difference]: With dead ends: 390 [2019-10-13 19:35:14,605 INFO L226 Difference]: Without dead ends: 273 [2019-10-13 19:35:14,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-13 19:35:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2019-10-13 19:35:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-10-13 19:35:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2019-10-13 19:35:14,652 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2019-10-13 19:35:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:14,652 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2019-10-13 19:35:14,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:35:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2019-10-13 19:35:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:35:14,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:14,654 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] [2019-10-13 19:35:14,654 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:14,655 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2019-10-13 19:35:14,655 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:14,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117253998] [2019-10-13 19:35:14,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:14,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:14,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,946 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:15,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117253998] [2019-10-13 19:35:15,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:15,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:15,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105899317] [2019-10-13 19:35:15,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:15,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:15,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:15,070 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2019-10-13 19:35:15,546 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:16,665 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:17,031 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:17,725 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:17,976 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:18,290 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:19,618 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2019-10-13 19:35:19,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:19,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2019-10-13 19:35:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:19,625 INFO L225 Difference]: With dead ends: 691 [2019-10-13 19:35:19,626 INFO L226 Difference]: Without dead ends: 483 [2019-10-13 19:35:19,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-10-13 19:35:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2019-10-13 19:35:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-13 19:35:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2019-10-13 19:35:19,733 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2019-10-13 19:35:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:19,734 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2019-10-13 19:35:19,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2019-10-13 19:35:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:35:19,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:19,736 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] [2019-10-13 19:35:19,737 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2019-10-13 19:35:19,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:19,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262083646] [2019-10-13 19:35:19,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:19,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:19,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,039 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:20,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262083646] [2019-10-13 19:35:20,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:20,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:20,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844747408] [2019-10-13 19:35:20,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:20,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:20,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:20,137 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2019-10-13 19:35:20,554 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:21,796 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:22,092 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:23,240 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:23,531 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:23,781 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:24,140 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2019-10-13 19:35:24,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:24,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-13 19:35:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:24,145 INFO L225 Difference]: With dead ends: 522 [2019-10-13 19:35:24,146 INFO L226 Difference]: Without dead ends: 519 [2019-10-13 19:35:24,146 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-10-13 19:35:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2019-10-13 19:35:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-13 19:35:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2019-10-13 19:35:24,220 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2019-10-13 19:35:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:24,221 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2019-10-13 19:35:24,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2019-10-13 19:35:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:24,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:24,223 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] [2019-10-13 19:35:24,224 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:24,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:24,224 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2019-10-13 19:35:24,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:24,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408565088] [2019-10-13 19:35:24,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:24,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:24,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,483 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:24,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408565088] [2019-10-13 19:35:24,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:24,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:24,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434541774] [2019-10-13 19:35:24,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:24,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:24,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:24,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:24,661 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2019-10-13 19:35:25,587 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:25,871 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:35:26,128 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:26,380 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:27,727 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2019-10-13 19:35:27,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:27,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2019-10-13 19:35:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:27,732 INFO L225 Difference]: With dead ends: 922 [2019-10-13 19:35:27,733 INFO L226 Difference]: Without dead ends: 527 [2019-10-13 19:35:27,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-13 19:35:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2019-10-13 19:35:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-13 19:35:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2019-10-13 19:35:27,836 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2019-10-13 19:35:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:27,837 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2019-10-13 19:35:27,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2019-10-13 19:35:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:27,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:27,840 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:27,840 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2019-10-13 19:35:27,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:27,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077945071] [2019-10-13 19:35:27,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:27,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:27,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,165 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:28,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077945071] [2019-10-13 19:35:28,360 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:28,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:28,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080491537] [2019-10-13 19:35:28,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:28,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:28,363 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2019-10-13 19:35:29,349 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:29,612 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:29,860 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:30,522 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:30,805 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:31,067 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:32,540 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2019-10-13 19:35:32,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:32,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2019-10-13 19:35:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:32,545 INFO L225 Difference]: With dead ends: 942 [2019-10-13 19:35:32,545 INFO L226 Difference]: Without dead ends: 537 [2019-10-13 19:35:32,547 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-13 19:35:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2019-10-13 19:35:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-10-13 19:35:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2019-10-13 19:35:32,606 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2019-10-13 19:35:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:32,606 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2019-10-13 19:35:32,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2019-10-13 19:35:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:32,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:32,608 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] [2019-10-13 19:35:32,608 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:32,609 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2019-10-13 19:35:32,609 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:32,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311581850] [2019-10-13 19:35:32,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:32,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:32,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,880 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:33,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311581850] [2019-10-13 19:35:33,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:33,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:35:33,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376533732] [2019-10-13 19:35:33,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:35:33,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:33,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:35:33,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:35:33,045 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2019-10-13 19:35:33,520 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:34,109 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:36,567 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2019-10-13 19:35:36,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:35:36,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2019-10-13 19:35:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:36,574 INFO L225 Difference]: With dead ends: 1265 [2019-10-13 19:35:36,574 INFO L226 Difference]: Without dead ends: 852 [2019-10-13 19:35:36,577 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2019-10-13 19:35:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2019-10-13 19:35:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-13 19:35:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2019-10-13 19:35:36,742 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2019-10-13 19:35:36,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:36,742 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2019-10-13 19:35:36,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:35:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2019-10-13 19:35:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 19:35:36,745 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:36,745 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] [2019-10-13 19:35:36,745 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:36,746 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2019-10-13 19:35:36,746 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:36,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65909277] [2019-10-13 19:35:36,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:36,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:36,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,113 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:35:37,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65909277] [2019-10-13 19:35:37,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133394717] [2019-10-13 19:35:37,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:37,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:37,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:37,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:37,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:37,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858656024] [2019-10-13 19:35:37,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:37,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:37,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:37,770 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 8 states. [2019-10-13 19:35:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:38,302 INFO L93 Difference]: Finished difference Result 1446 states and 1719 transitions. [2019-10-13 19:35:38,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:38,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-13 19:35:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:38,309 INFO L225 Difference]: With dead ends: 1446 [2019-10-13 19:35:38,309 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 19:35:38,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:38,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 19:35:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-13 19:35:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 19:35:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 832 transitions. [2019-10-13 19:35:38,587 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 832 transitions. Word has length 107 [2019-10-13 19:35:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:38,588 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 832 transitions. [2019-10-13 19:35:38,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 832 transitions. [2019-10-13 19:35:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 19:35:38,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:38,593 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:35:38,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:38,808 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2019-10-13 19:35:38,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:38,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237589105] [2019-10-13 19:35:38,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:38,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:38,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,204 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat