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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:07:56,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:56,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:56,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:56,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:56,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:56,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:56,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:56,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:56,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:56,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:56,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:56,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:56,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:56,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:56,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:56,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:56,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:56,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:56,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:56,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:56,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:56,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:56,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:56,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:56,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:56,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:56,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:56,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:56,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:56,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:56,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:56,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:56,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:56,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:56,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:56,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:56,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:56,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:56,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:56,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:56,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:07:56,798 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:56,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:56,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:56,799 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:56,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:56,800 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:56,800 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:56,800 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:56,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:56,801 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:56,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:56,801 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:56,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:56,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:56,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:56,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:56,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:56,803 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:56,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:56,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:56,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:56,804 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:56,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:56,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:56,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:56,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:56,805 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:56,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:56,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:56,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:56,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:56,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:56,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:56,857 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:56,858 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:56,858 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-09-16 17:07:56,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87adf7fc4/28564331c9ab47fab498c0bbbd38d1a4/FLAG8eda736e1 [2019-09-16 17:07:57,459 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:57,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-09-16 17:07:57,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87adf7fc4/28564331c9ab47fab498c0bbbd38d1a4/FLAG8eda736e1 [2019-09-16 17:07:57,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87adf7fc4/28564331c9ab47fab498c0bbbd38d1a4 [2019-09-16 17:07:57,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:57,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:57,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:57,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:57,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:57,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:57" (1/1) ... [2019-09-16 17:07:57,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239e2649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:57, skipping insertion in model container [2019-09-16 17:07:57,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:57" (1/1) ... [2019-09-16 17:07:57,799 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:57,862 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:58,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:58,431 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:58,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:58,604 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:58,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58 WrapperNode [2019-09-16 17:07:58,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:58,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:58,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:58,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:58,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (1/1) ... [2019-09-16 17:07:58,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:58,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:58,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:58,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:58,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (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 [2019-09-16 17:07:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:07:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:07:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:07:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:07:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:07:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:07:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:07:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:07:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:07:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-16 17:07:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:07:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:07:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:07:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:07:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:07:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:07:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:07:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:07:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:07:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:07:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:07:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:07:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:07:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:07:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:07:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:07:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:07:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:07:58,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:07:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:07:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:07:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:07:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:07:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:07:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:07:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:07:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:07:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:07:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:07:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:07:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:07:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:07:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:07:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:07:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:07:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:07:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:07:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:07:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:07:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:07:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:07:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:07:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:07:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:07:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:07:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:07:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:07:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:07:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:07:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:07:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:07:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:07:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:07:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:07:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:07:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:07:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:07:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:07:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:59,884 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:59,885 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:07:59,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:59 BoogieIcfgContainer [2019-09-16 17:07:59,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:59,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:59,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:59,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:59,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:57" (1/3) ... [2019-09-16 17:07:59,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d74f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:59, skipping insertion in model container [2019-09-16 17:07:59,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:58" (2/3) ... [2019-09-16 17:07:59,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d74f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:59, skipping insertion in model container [2019-09-16 17:07:59,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:59" (3/3) ... [2019-09-16 17:07:59,895 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2019-09-16 17:07:59,905 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:59,914 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:07:59,931 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:07:59,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:59,958 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:59,959 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:59,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:59,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:59,959 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:59,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:59,960 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-09-16 17:07:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-16 17:07:59,994 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:59,995 INFO L407 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] [2019-09-16 17:07:59,998 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1514827661, now seen corresponding path program 1 times [2019-09-16 17:08:00,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:00,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:00,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:00,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:00,066 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:00,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:00,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:00,391 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:00,397 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:00,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:00,417 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-09-16 17:08:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:00,450 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2019-09-16 17:08:00,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:00,452 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-16 17:08:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:00,466 INFO L225 Difference]: With dead ends: 157 [2019-09-16 17:08:00,466 INFO L226 Difference]: Without dead ends: 146 [2019-09-16 17:08:00,468 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-16 17:08:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-16 17:08:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-16 17:08:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-09-16 17:08:00,528 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2019-09-16 17:08:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:00,529 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-09-16 17:08:00,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-09-16 17:08:00,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-16 17:08:00,533 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:00,533 INFO L407 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] [2019-09-16 17:08:00,533 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:00,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:00,534 INFO L82 PathProgramCache]: Analyzing trace with hash -932487912, now seen corresponding path program 1 times [2019-09-16 17:08:00,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:00,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:00,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:00,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:00,538 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:00,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:00,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:00,751 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:00,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:00,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:00,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:00,756 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 3 states. [2019-09-16 17:08:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:00,778 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2019-09-16 17:08:00,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:00,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-16 17:08:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:00,781 INFO L225 Difference]: With dead ends: 137 [2019-09-16 17:08:00,781 INFO L226 Difference]: Without dead ends: 137 [2019-09-16 17:08:00,782 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:00,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-09-16 17:08:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-09-16 17:08:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-16 17:08:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-09-16 17:08:00,796 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2019-09-16 17:08:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:00,796 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-09-16 17:08:00,796 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-09-16 17:08:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-16 17:08:00,799 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:00,799 INFO L407 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] [2019-09-16 17:08:00,799 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:00,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:00,800 INFO L82 PathProgramCache]: Analyzing trace with hash -896226788, now seen corresponding path program 1 times [2019-09-16 17:08:00,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:00,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:00,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:00,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:00,803 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:00,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:00,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:00,925 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:00,926 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:00,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:00,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:00,927 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 7 states. [2019-09-16 17:08:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:01,425 INFO L93 Difference]: Finished difference Result 300 states and 358 transitions. [2019-09-16 17:08:01,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:01,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-09-16 17:08:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:01,436 INFO L225 Difference]: With dead ends: 300 [2019-09-16 17:08:01,436 INFO L226 Difference]: Without dead ends: 300 [2019-09-16 17:08:01,440 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:08:01,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-09-16 17:08:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2019-09-16 17:08:01,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-09-16 17:08:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2019-09-16 17:08:01,504 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2019-09-16 17:08:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:01,504 INFO L475 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2019-09-16 17:08:01,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:01,505 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2019-09-16 17:08:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-16 17:08:01,508 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:01,549 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:01,549 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash 278011294, now seen corresponding path program 1 times [2019-09-16 17:08:01,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:01,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:01,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:01,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:01,557 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:01,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:01,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:01,665 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:01,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:01,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:01,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:01,667 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 6 states. [2019-09-16 17:08:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:01,912 INFO L93 Difference]: Finished difference Result 545 states and 660 transitions. [2019-09-16 17:08:01,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:01,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-16 17:08:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:01,927 INFO L225 Difference]: With dead ends: 545 [2019-09-16 17:08:01,928 INFO L226 Difference]: Without dead ends: 545 [2019-09-16 17:08:01,928 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2019-09-16 17:08:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2019-09-16 17:08:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-09-16 17:08:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 654 transitions. [2019-09-16 17:08:01,989 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 654 transitions. Word has length 57 [2019-09-16 17:08:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:01,990 INFO L475 AbstractCegarLoop]: Abstraction has 539 states and 654 transitions. [2019-09-16 17:08:01,992 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 654 transitions. [2019-09-16 17:08:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-16 17:08:02,002 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:02,002 INFO L407 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] [2019-09-16 17:08:02,003 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:02,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1238143586, now seen corresponding path program 1 times [2019-09-16 17:08:02,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:02,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:02,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:02,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:02,012 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:02,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:02,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:02,155 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:02,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:02,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:02,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:02,157 INFO L87 Difference]: Start difference. First operand 539 states and 654 transitions. Second operand 7 states. [2019-09-16 17:08:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:02,917 INFO L93 Difference]: Finished difference Result 865 states and 1094 transitions. [2019-09-16 17:08:02,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:08:02,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-09-16 17:08:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:02,924 INFO L225 Difference]: With dead ends: 865 [2019-09-16 17:08:02,924 INFO L226 Difference]: Without dead ends: 865 [2019-09-16 17:08:02,925 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:08:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2019-09-16 17:08:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 769. [2019-09-16 17:08:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2019-09-16 17:08:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 931 transitions. [2019-09-16 17:08:02,969 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 931 transitions. Word has length 61 [2019-09-16 17:08:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:02,970 INFO L475 AbstractCegarLoop]: Abstraction has 769 states and 931 transitions. [2019-09-16 17:08:02,970 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 931 transitions. [2019-09-16 17:08:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-16 17:08:02,973 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:02,973 INFO L407 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] [2019-09-16 17:08:02,974 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:02,974 INFO L82 PathProgramCache]: Analyzing trace with hash 726814707, now seen corresponding path program 1 times [2019-09-16 17:08:02,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:02,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:02,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:02,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:02,977 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:03,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:03,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:03,078 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:03,078 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:03,079 INFO L87 Difference]: Start difference. First operand 769 states and 931 transitions. Second operand 6 states. [2019-09-16 17:08:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:03,112 INFO L93 Difference]: Finished difference Result 797 states and 963 transitions. [2019-09-16 17:08:03,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:03,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-16 17:08:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:03,118 INFO L225 Difference]: With dead ends: 797 [2019-09-16 17:08:03,118 INFO L226 Difference]: Without dead ends: 797 [2019-09-16 17:08:03,119 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2019-09-16 17:08:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 789. [2019-09-16 17:08:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-09-16 17:08:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 951 transitions. [2019-09-16 17:08:03,151 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 951 transitions. Word has length 98 [2019-09-16 17:08:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:03,152 INFO L475 AbstractCegarLoop]: Abstraction has 789 states and 951 transitions. [2019-09-16 17:08:03,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 951 transitions. [2019-09-16 17:08:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-16 17:08:03,155 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:03,155 INFO L407 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] [2019-09-16 17:08:03,155 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:03,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1620301045, now seen corresponding path program 1 times [2019-09-16 17:08:03,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:03,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:03,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:03,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:03,159 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:03,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:03,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:08:03,246 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:03,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:08:03,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:08:03,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:03,248 INFO L87 Difference]: Start difference. First operand 789 states and 951 transitions. Second operand 8 states. [2019-09-16 17:08:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:03,307 INFO L93 Difference]: Finished difference Result 817 states and 979 transitions. [2019-09-16 17:08:03,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:03,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-09-16 17:08:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:03,314 INFO L225 Difference]: With dead ends: 817 [2019-09-16 17:08:03,315 INFO L226 Difference]: Without dead ends: 817 [2019-09-16 17:08:03,315 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2019-09-16 17:08:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 805. [2019-09-16 17:08:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-09-16 17:08:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 967 transitions. [2019-09-16 17:08:03,352 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 967 transitions. Word has length 98 [2019-09-16 17:08:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:03,352 INFO L475 AbstractCegarLoop]: Abstraction has 805 states and 967 transitions. [2019-09-16 17:08:03,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:08:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 967 transitions. [2019-09-16 17:08:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-16 17:08:03,358 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:03,358 INFO L407 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] [2019-09-16 17:08:03,359 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:03,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:03,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1612541686, now seen corresponding path program 1 times [2019-09-16 17:08:03,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:03,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:03,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:03,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:03,362 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:08:03,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:03,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:08:03,468 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:03,469 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:08:03,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:08:03,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:03,491 INFO L87 Difference]: Start difference. First operand 805 states and 967 transitions. Second operand 4 states. [2019-09-16 17:08:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:03,731 INFO L93 Difference]: Finished difference Result 1766 states and 2211 transitions. [2019-09-16 17:08:03,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:08:03,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-16 17:08:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:03,744 INFO L225 Difference]: With dead ends: 1766 [2019-09-16 17:08:03,744 INFO L226 Difference]: Without dead ends: 1766 [2019-09-16 17:08:03,745 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-09-16 17:08:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1735. [2019-09-16 17:08:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2019-09-16 17:08:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2139 transitions. [2019-09-16 17:08:03,825 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2139 transitions. Word has length 98 [2019-09-16 17:08:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:03,825 INFO L475 AbstractCegarLoop]: Abstraction has 1735 states and 2139 transitions. [2019-09-16 17:08:03,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:08:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2139 transitions. [2019-09-16 17:08:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-16 17:08:03,830 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:03,830 INFO L407 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] [2019-09-16 17:08:03,831 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:03,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1468895920, now seen corresponding path program 1 times [2019-09-16 17:08:03,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:03,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:03,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:03,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:03,834 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:08:04,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:04,030 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:04,031 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-16 17:08:04,034 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [210], [212], [217], [220], [223], [225], [230], [232], [233], [234], [235], [241], [245], [285], [288], [290], [293], [303], [306], [310], [311], [314], [315], [316], [339], [341], [342], [409], [410], [415], [417], [420], [424], [426], [429], [431], [434], [447], [448], [449], [450], [451], [452], [453], [454], [455], [497], [498], [499], [500], [501], [502], [505], [509], [510], [511], [512], [513], [514], [517], [518], [519], [525], [526], [527], [528], [535], [537], [538], [543], [544], [545], [547], [548], [549], [550], [551] [2019-09-16 17:08:04,098 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:04,098 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:04,205 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:04,207 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-16 17:08:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:04,212 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:04,286 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:04,286 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:04,294 INFO L420 sIntCurrentIteration]: We unified 101 AI predicates to 101 [2019-09-16 17:08:04,294 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:04,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:04,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-16 17:08:04,295 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:04,295 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:04,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:04,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:04,297 INFO L87 Difference]: Start difference. First operand 1735 states and 2139 transitions. Second operand 2 states. [2019-09-16 17:08:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:04,297 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:04,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:04,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 102 [2019-09-16 17:08:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:04,298 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:04,298 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:04,298 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:04,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2019-09-16 17:08:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:04,299 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:04,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:04,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:04 BoogieIcfgContainer [2019-09-16 17:08:04,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:04,309 INFO L168 Benchmark]: Toolchain (without parser) took 6527.93 ms. Allocated memory was 141.0 MB in the beginning and 312.5 MB in the end (delta: 171.4 MB). Free memory was 87.4 MB in the beginning and 168.7 MB in the end (delta: -81.3 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:04,311 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:04,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.62 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 87.2 MB in the beginning and 166.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:04,315 INFO L168 Benchmark]: Boogie Preprocessor took 89.70 ms. Allocated memory is still 201.3 MB. Free memory was 166.7 MB in the beginning and 161.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:04,317 INFO L168 Benchmark]: RCFGBuilder took 1190.32 ms. Allocated memory was 201.3 MB in the beginning and 228.1 MB in the end (delta: 26.7 MB). Free memory was 161.9 MB in the beginning and 193.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:04,322 INFO L168 Benchmark]: TraceAbstraction took 4418.83 ms. Allocated memory was 228.1 MB in the beginning and 312.5 MB in the end (delta: 84.4 MB). Free memory was 193.0 MB in the beginning and 168.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:04,331 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 824.62 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 87.2 MB in the beginning and 166.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.70 ms. Allocated memory is still 201.3 MB. Free memory was 166.7 MB in the beginning and 161.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1190.32 ms. Allocated memory was 201.3 MB in the beginning and 228.1 MB in the end (delta: 26.7 MB). Free memory was 161.9 MB in the beginning and 193.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4418.83 ms. Allocated memory was 228.1 MB in the beginning and 312.5 MB in the end (delta: 84.4 MB). Free memory was 193.0 MB in the beginning and 168.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 248 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1452 SDtfs, 795 SDslu, 3489 SDs, 0 SdLazy, 943 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1735occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0693069306930694 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 161 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 658 NumberOfCodeBlocks, 658 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 649 ConstructedInterpolants, 0 QuantifiedInterpolants, 81453 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...