java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:36:44,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:36:44,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:36:44,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:36:44,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:36:44,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:36:44,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:36:44,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:36:44,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:36:44,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:36:44,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:36:44,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:36:44,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:36:44,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:36:44,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:36:44,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:36:44,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:36:44,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:36:44,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:36:44,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:36:44,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:36:44,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:36:44,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:36:44,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:36:44,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:36:44,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:36:44,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:36:44,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:36:44,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:36:44,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:36:44,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:36:44,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:36:44,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:36:44,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:36:44,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:36:44,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:36:44,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:36:44,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:36:44,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:36:44,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:36:44,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:36:44,598 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 19:36:44,612 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:36:44,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:36:44,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:36:44,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:36:44,614 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:36:44,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:36:44,615 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:36:44,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:36:44,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:36:44,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:36:44,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:36:44,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:36:44,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:36:44,616 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:36:44,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:36:44,616 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:36:44,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:36:44,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:36:44,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:36:44,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:36:44,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:36:44,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:36:44,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:36:44,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:36:44,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:36:44,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:36:44,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:36:44,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:36:44,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:36:44,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:36:44,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:36:44,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:36:44,922 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:36:44,922 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:36:44,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-10-13 19:36:44,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41426aa0d/e4adf4bf92ec4043a075b8d43bf82163/FLAG2bc969e9e [2019-10-13 19:36:45,563 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:36:45,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-10-13 19:36:45,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41426aa0d/e4adf4bf92ec4043a075b8d43bf82163/FLAG2bc969e9e [2019-10-13 19:36:45,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41426aa0d/e4adf4bf92ec4043a075b8d43bf82163 [2019-10-13 19:36:45,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:36:45,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:36:45,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:45,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:36:45,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:36:45,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:45" (1/1) ... [2019-10-13 19:36:45,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d974c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:45, skipping insertion in model container [2019-10-13 19:36:45,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:45" (1/1) ... [2019-10-13 19:36:45,882 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:36:45,930 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:36:46,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:46,419 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:36:46,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:46,579 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:36:46,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46 WrapperNode [2019-10-13 19:36:46,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:46,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:36:46,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:36:46,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:36:46,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (1/1) ... [2019-10-13 19:36:46,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:36:46,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:36:46,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:36:46,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:36:46,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (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 19:36:46,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:36:46,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:36:46,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:46,753 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:36:46,753 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:36:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:36:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:36:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:36:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:36:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:36:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:36:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:36:46,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:36:46,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:36:46,757 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:36:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:36:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:36:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:36:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:36:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:36:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:36:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:36:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:36:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:36:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:36:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:36:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:36:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:36:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:36:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:36:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:36:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:36:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:36:46,764 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:36:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:36:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:36:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:36:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:36:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:36:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:36:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:36:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:36:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:36:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:36:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:36:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:36:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:36:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:36:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:36:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:36:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:36:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:36:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:36:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:36:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:36:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:36:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:36:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:36:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:36:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:36:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:36:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:36:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:36:47,948 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:36:47,949 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:36:47,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:47 BoogieIcfgContainer [2019-10-13 19:36:47,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:36:47,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:36:47,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:36:47,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:36:47,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:45" (1/3) ... [2019-10-13 19:36:47,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8af00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:47, skipping insertion in model container [2019-10-13 19:36:47,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:46" (2/3) ... [2019-10-13 19:36:47,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8af00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:47, skipping insertion in model container [2019-10-13 19:36:47,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:47" (3/3) ... [2019-10-13 19:36:47,960 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2019-10-13 19:36:47,969 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:36:47,978 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:36:47,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:36:48,021 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:36:48,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:36:48,022 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:36:48,022 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:36:48,022 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:36:48,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:36:48,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:36:48,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:36:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2019-10-13 19:36:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:36:48,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:48,055 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 19:36:48,057 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:48,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:48,063 INFO L82 PathProgramCache]: Analyzing trace with hash 2010639633, now seen corresponding path program 1 times [2019-10-13 19:36:48,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:48,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644239287] [2019-10-13 19:36:48,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:48,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:48,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,749 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,869 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 19:36:48,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644239287] [2019-10-13 19:36:48,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:48,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:36:48,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647844069] [2019-10-13 19:36:48,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:36:48,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:36:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:48,895 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2019-10-13 19:36:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:50,153 INFO L93 Difference]: Finished difference Result 311 states and 406 transitions. [2019-10-13 19:36:50,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:36:50,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:36:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:50,181 INFO L225 Difference]: With dead ends: 311 [2019-10-13 19:36:50,181 INFO L226 Difference]: Without dead ends: 173 [2019-10-13 19:36:50,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-13 19:36:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 139. [2019-10-13 19:36:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-13 19:36:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2019-10-13 19:36:50,339 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2019-10-13 19:36:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:50,340 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2019-10-13 19:36:50,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:36:50,341 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2019-10-13 19:36:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:36:50,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:50,352 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:36:50,352 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:50,353 INFO L82 PathProgramCache]: Analyzing trace with hash -119912956, now seen corresponding path program 1 times [2019-10-13 19:36:50,354 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:50,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903308869] [2019-10-13 19:36:50,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:50,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:50,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,777 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,843 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 19:36:50,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903308869] [2019-10-13 19:36:50,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:50,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:36:50,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310154578] [2019-10-13 19:36:50,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:36:50,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:36:50,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:36:50,855 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2019-10-13 19:36:51,382 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:52,347 INFO L93 Difference]: Finished difference Result 250 states and 309 transitions. [2019-10-13 19:36:52,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:36:52,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:36:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:52,350 INFO L225 Difference]: With dead ends: 250 [2019-10-13 19:36:52,350 INFO L226 Difference]: Without dead ends: 163 [2019-10-13 19:36:52,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-10-13 19:36:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2019-10-13 19:36:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 19:36:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2019-10-13 19:36:52,388 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2019-10-13 19:36:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:52,389 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2019-10-13 19:36:52,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:36:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2019-10-13 19:36:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:36:52,391 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:52,391 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] [2019-10-13 19:36:52,391 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:52,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1399098738, now seen corresponding path program 1 times [2019-10-13 19:36:52,392 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:52,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743695233] [2019-10-13 19:36:52,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:52,393 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:52,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,769 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,875 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 19:36:52,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743695233] [2019-10-13 19:36:52,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:52,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:52,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911819161] [2019-10-13 19:36:52,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:52,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:52,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:52,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:52,878 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2019-10-13 19:36:53,339 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:53,713 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:36:53,980 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:54,248 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:55,160 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:57,141 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2019-10-13 19:36:57,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:36:57,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-13 19:36:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:57,147 INFO L225 Difference]: With dead ends: 438 [2019-10-13 19:36:57,148 INFO L226 Difference]: Without dead ends: 336 [2019-10-13 19:36:57,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:36:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-10-13 19:36:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 275. [2019-10-13 19:36:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-10-13 19:36:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 334 transitions. [2019-10-13 19:36:57,222 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 334 transitions. Word has length 56 [2019-10-13 19:36:57,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:57,223 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 334 transitions. [2019-10-13 19:36:57,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:36:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 334 transitions. [2019-10-13 19:36:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 19:36:57,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:57,225 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] [2019-10-13 19:36:57,225 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1261702676, now seen corresponding path program 1 times [2019-10-13 19:36:57,226 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:57,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399800218] [2019-10-13 19:36:57,226 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:57,226 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:57,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,554 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,661 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 19:36:57,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399800218] [2019-10-13 19:36:57,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:57,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:57,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074390026] [2019-10-13 19:36:57,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:57,664 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:57,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:57,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:57,665 INFO L87 Difference]: Start difference. First operand 275 states and 334 transitions. Second operand 9 states. [2019-10-13 19:36:58,239 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:59,562 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:59,977 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:00,314 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:00,665 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:02,048 INFO L93 Difference]: Finished difference Result 875 states and 1153 transitions. [2019-10-13 19:37:02,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:37:02,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-13 19:37:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:02,055 INFO L225 Difference]: With dead ends: 875 [2019-10-13 19:37:02,055 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 19:37:02,058 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:37:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 19:37:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 498. [2019-10-13 19:37:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-13 19:37:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 608 transitions. [2019-10-13 19:37:02,181 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 608 transitions. Word has length 62 [2019-10-13 19:37:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:02,181 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 608 transitions. [2019-10-13 19:37:02,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 608 transitions. [2019-10-13 19:37:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 19:37:02,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:02,184 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] [2019-10-13 19:37:02,185 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1700300984, now seen corresponding path program 1 times [2019-10-13 19:37:02,185 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:02,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287749058] [2019-10-13 19:37:02,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:02,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:02,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,511 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:02,626 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 19:37:02,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287749058] [2019-10-13 19:37:02,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:02,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:02,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126401052] [2019-10-13 19:37:02,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:02,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:02,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:02,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:02,628 INFO L87 Difference]: Start difference. First operand 498 states and 608 transitions. Second operand 10 states. [2019-10-13 19:37:03,167 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:04,272 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:04,683 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:05,032 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:05,739 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:07,069 INFO L93 Difference]: Finished difference Result 1379 states and 1882 transitions. [2019-10-13 19:37:07,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 19:37:07,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-13 19:37:07,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:07,078 INFO L225 Difference]: With dead ends: 1379 [2019-10-13 19:37:07,078 INFO L226 Difference]: Without dead ends: 909 [2019-10-13 19:37:07,081 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:37:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-13 19:37:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 713. [2019-10-13 19:37:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2019-10-13 19:37:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 867 transitions. [2019-10-13 19:37:07,239 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 867 transitions. Word has length 66 [2019-10-13 19:37:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:07,240 INFO L462 AbstractCegarLoop]: Abstraction has 713 states and 867 transitions. [2019-10-13 19:37:07,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 867 transitions. [2019-10-13 19:37:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:37:07,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:07,243 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:07,243 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1342584408, now seen corresponding path program 1 times [2019-10-13 19:37:07,244 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:07,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082491761] [2019-10-13 19:37:07,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:07,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:07,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,510 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,663 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 19:37:07,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082491761] [2019-10-13 19:37:07,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:07,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:07,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900392177] [2019-10-13 19:37:07,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:07,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:07,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:07,666 INFO L87 Difference]: Start difference. First operand 713 states and 867 transitions. Second operand 10 states. [2019-10-13 19:37:09,153 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:09,450 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:37:09,769 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:10,072 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:11,339 INFO L93 Difference]: Finished difference Result 1670 states and 2230 transitions. [2019-10-13 19:37:11,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:11,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-13 19:37:11,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:11,353 INFO L225 Difference]: With dead ends: 1670 [2019-10-13 19:37:11,353 INFO L226 Difference]: Without dead ends: 985 [2019-10-13 19:37:11,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:37:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-10-13 19:37:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 739. [2019-10-13 19:37:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2019-10-13 19:37:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 895 transitions. [2019-10-13 19:37:11,504 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 895 transitions. Word has length 88 [2019-10-13 19:37:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:11,504 INFO L462 AbstractCegarLoop]: Abstraction has 739 states and 895 transitions. [2019-10-13 19:37:11,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 895 transitions. [2019-10-13 19:37:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:37:11,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:11,507 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:11,507 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:11,508 INFO L82 PathProgramCache]: Analyzing trace with hash -640984534, now seen corresponding path program 1 times [2019-10-13 19:37:11,508 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:11,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543836193] [2019-10-13 19:37:11,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:11,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:11,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,870 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,017 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 19:37:12,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543836193] [2019-10-13 19:37:12,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:12,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:12,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433385926] [2019-10-13 19:37:12,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:12,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:12,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:12,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:12,020 INFO L87 Difference]: Start difference. First operand 739 states and 895 transitions. Second operand 12 states. [2019-10-13 19:37:12,725 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:13,022 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:13,301 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:14,165 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:14,477 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:14,781 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:16,378 INFO L93 Difference]: Finished difference Result 1724 states and 2339 transitions. [2019-10-13 19:37:16,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:16,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-13 19:37:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:16,389 INFO L225 Difference]: With dead ends: 1724 [2019-10-13 19:37:16,389 INFO L226 Difference]: Without dead ends: 1013 [2019-10-13 19:37:16,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2019-10-13 19:37:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 755. [2019-10-13 19:37:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2019-10-13 19:37:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 911 transitions. [2019-10-13 19:37:16,572 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 911 transitions. Word has length 88 [2019-10-13 19:37:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:16,573 INFO L462 AbstractCegarLoop]: Abstraction has 755 states and 911 transitions. [2019-10-13 19:37:16,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 911 transitions. [2019-10-13 19:37:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:37:16,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:16,578 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:16,578 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1084496363, now seen corresponding path program 1 times [2019-10-13 19:37:16,579 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:16,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314384126] [2019-10-13 19:37:16,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:16,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:16,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,986 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,231 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 19:37:17,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314384126] [2019-10-13 19:37:17,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:17,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:17,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610361480] [2019-10-13 19:37:17,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:17,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:17,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:17,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:17,236 INFO L87 Difference]: Start difference. First operand 755 states and 911 transitions. Second operand 8 states. [2019-10-13 19:37:17,694 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:18,278 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:21,304 INFO L93 Difference]: Finished difference Result 2626 states and 3597 transitions. [2019-10-13 19:37:21,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:21,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-13 19:37:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:21,319 INFO L225 Difference]: With dead ends: 2626 [2019-10-13 19:37:21,319 INFO L226 Difference]: Without dead ends: 1899 [2019-10-13 19:37:21,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:37:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2019-10-13 19:37:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1555. [2019-10-13 19:37:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-13 19:37:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 1901 transitions. [2019-10-13 19:37:21,654 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 1901 transitions. Word has length 88 [2019-10-13 19:37:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:21,654 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 1901 transitions. [2019-10-13 19:37:21,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 1901 transitions. [2019-10-13 19:37:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 19:37:21,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:21,658 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:21,658 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:21,658 INFO L82 PathProgramCache]: Analyzing trace with hash 269339525, now seen corresponding path program 1 times [2019-10-13 19:37:21,659 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:21,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537297607] [2019-10-13 19:37:21,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,931 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,033 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 19:37:22,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537297607] [2019-10-13 19:37:22,034 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:22,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:22,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264207654] [2019-10-13 19:37:22,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:22,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:22,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:22,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:22,036 INFO L87 Difference]: Start difference. First operand 1555 states and 1901 transitions. Second operand 8 states. [2019-10-13 19:37:22,485 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189