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_spec5_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:10:00,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:10:00,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:10:00,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:10:00,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:10:00,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:10:00,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:10:00,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:10:00,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:10:00,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:10:00,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:10:00,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:10:00,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:10:00,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:10:00,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:10:00,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:10:00,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:10:00,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:10:00,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:10:00,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:10:00,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:10:00,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:10:00,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:10:00,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:10:00,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:10:00,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:10:00,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:10:00,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:10:00,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:10:00,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:10:00,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:10:00,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:10:00,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:10:00,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:10:00,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:10:00,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:10:00,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:10:00,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:10:00,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:10:00,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:10:00,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:10:00,674 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 17:10:00,690 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:10:00,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:10:00,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:10:00,694 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:10:00,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:10:00,695 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:10:00,695 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:10:00,695 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:10:00,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:10:00,695 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:10:00,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:10:00,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:10:00,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:10:00,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:10:00,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:10:00,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:10:00,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:10:00,702 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:10:00,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:10:00,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:10:00,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:10:00,703 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:10:00,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:10:00,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:10:00,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:10:00,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:10:00,704 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:10:00,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:10:00,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:10:00,705 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:10:00,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:10:00,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:10:00,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:10:00,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:10:00,780 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:10:00,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-09-16 17:10:00,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528a1518b/82459f9bcc8347f797955241831da316/FLAG6b52402b8 [2019-09-16 17:10:01,411 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:10:01,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-09-16 17:10:01,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528a1518b/82459f9bcc8347f797955241831da316/FLAG6b52402b8 [2019-09-16 17:10:01,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528a1518b/82459f9bcc8347f797955241831da316 [2019-09-16 17:10:01,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:10:01,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:10:01,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:10:01,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:10:01,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:10:01,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:10:01" (1/1) ... [2019-09-16 17:10:01,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242ad12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:01, skipping insertion in model container [2019-09-16 17:10:01,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:10:01" (1/1) ... [2019-09-16 17:10:01,778 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:10:01,883 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:10:02,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:10:02,419 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:10:02,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:10:02,575 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:10:02,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02 WrapperNode [2019-09-16 17:10:02,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:10:02,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:10:02,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:10:02,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:10:02,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... [2019-09-16 17:10:02,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:10:02,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:10:02,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:10:02,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:10:02,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:10:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:10:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:10:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:10:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:10:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:10:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:10:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:10:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:10:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:10:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:10:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:10:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:10:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:10:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:10:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:10:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:10:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:10:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:10:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:10:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:10:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:10:02,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:10:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:10:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:10:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:10:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:10:02,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:10:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:10:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:10:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:10:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:10:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:10:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:10:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:10:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:10:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:10:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:10:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:10:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:10:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:10:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:10:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:10:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:10:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:10:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:10:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:10:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:10:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:10:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:10:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:10:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:10:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:10:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:10:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:10:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:10:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:10:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:10:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:10:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:10:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:10:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:10:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:10:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:10:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:10:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:10:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:10:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:10:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:10:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:10:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:10:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:10:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:10:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:10:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:10:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:10:02,777 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:10:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:10:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:10:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:10:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:10:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:10:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:10:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:10:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:10:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:10:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:10:03,928 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:10:03,928 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:10:03,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:10:03 BoogieIcfgContainer [2019-09-16 17:10:03,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:10:03,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:10:03,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:10:03,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:10:03,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:10:01" (1/3) ... [2019-09-16 17:10:03,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e8b6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:10:03, skipping insertion in model container [2019-09-16 17:10:03,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:02" (2/3) ... [2019-09-16 17:10:03,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e8b6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:10:03, skipping insertion in model container [2019-09-16 17:10:03,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:10:03" (3/3) ... [2019-09-16 17:10:03,938 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2019-09-16 17:10:03,949 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:10:03,958 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:10:03,977 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:10:04,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:10:04,007 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:10:04,007 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:10:04,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:10:04,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:10:04,007 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:10:04,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:10:04,008 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:10:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2019-09-16 17:10:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:10:04,050 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:04,051 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] [2019-09-16 17:10:04,056 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:04,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1893311162, now seen corresponding path program 1 times [2019-09-16 17:10:04,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:04,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:04,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,138 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:04,489 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 17:10:04,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:04,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:10:04,493 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:04,499 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:10:04,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:10:04,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:04,521 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 2 states. [2019-09-16 17:10:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:04,574 INFO L93 Difference]: Finished difference Result 180 states and 213 transitions. [2019-09-16 17:10:04,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:10:04,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:10:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:04,590 INFO L225 Difference]: With dead ends: 180 [2019-09-16 17:10:04,590 INFO L226 Difference]: Without dead ends: 169 [2019-09-16 17:10:04,592 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 17:10:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-09-16 17:10:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2019-09-16 17:10:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-09-16 17:10:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2019-09-16 17:10:04,662 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 59 [2019-09-16 17:10:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:04,663 INFO L475 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2019-09-16 17:10:04,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:10:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2019-09-16 17:10:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:10:04,667 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:04,668 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] [2019-09-16 17:10:04,668 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:04,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1978801715, now seen corresponding path program 1 times [2019-09-16 17:10:04,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:04,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:04,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,672 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:04,854 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 17:10:04,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:04,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:10:04,855 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:04,857 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:10:04,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:10:04,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:10:04,857 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand 3 states. [2019-09-16 17:10:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:04,876 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2019-09-16 17:10:04,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:10:04,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:10:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:04,880 INFO L225 Difference]: With dead ends: 160 [2019-09-16 17:10:04,880 INFO L226 Difference]: Without dead ends: 160 [2019-09-16 17:10:04,881 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 17:10:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-16 17:10:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-09-16 17:10:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-09-16 17:10:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2019-09-16 17:10:04,895 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 60 [2019-09-16 17:10:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:04,896 INFO L475 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2019-09-16 17:10:04,896 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:10:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2019-09-16 17:10:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-16 17:10:04,899 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:04,899 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] [2019-09-16 17:10:04,900 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:04,900 INFO L82 PathProgramCache]: Analyzing trace with hash -532508270, now seen corresponding path program 1 times [2019-09-16 17:10:04,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:04,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:04,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,903 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:05,101 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 17:10:05,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:05,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:10:05,102 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:05,104 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:10:05,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:10:05,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:05,105 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 7 states. [2019-09-16 17:10:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:05,814 INFO L93 Difference]: Finished difference Result 348 states and 420 transitions. [2019-09-16 17:10:05,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:10:05,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-16 17:10:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:05,820 INFO L225 Difference]: With dead ends: 348 [2019-09-16 17:10:05,821 INFO L226 Difference]: Without dead ends: 348 [2019-09-16 17:10:05,821 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 17:10:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-09-16 17:10:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2019-09-16 17:10:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2019-09-16 17:10:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 414 transitions. [2019-09-16 17:10:05,862 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 414 transitions. Word has length 64 [2019-09-16 17:10:05,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:05,862 INFO L475 AbstractCegarLoop]: Abstraction has 340 states and 414 transitions. [2019-09-16 17:10:05,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 414 transitions. [2019-09-16 17:10:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:10:05,866 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:05,867 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] [2019-09-16 17:10:05,867 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:05,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:05,867 INFO L82 PathProgramCache]: Analyzing trace with hash 216340368, now seen corresponding path program 1 times [2019-09-16 17:10:05,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:05,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:05,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:05,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:05,871 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:10:05,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:06,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:10:06,000 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:06,000 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:10:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:10:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:06,001 INFO L87 Difference]: Start difference. First operand 340 states and 414 transitions. Second operand 7 states. [2019-09-16 17:10:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:06,884 INFO L93 Difference]: Finished difference Result 555 states and 688 transitions. [2019-09-16 17:10:06,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:10:06,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:10:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:06,891 INFO L225 Difference]: With dead ends: 555 [2019-09-16 17:10:06,891 INFO L226 Difference]: Without dead ends: 555 [2019-09-16 17:10:06,892 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 17:10:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-09-16 17:10:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 502. [2019-09-16 17:10:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2019-09-16 17:10:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 601 transitions. [2019-09-16 17:10:06,962 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 601 transitions. Word has length 70 [2019-09-16 17:10:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:06,963 INFO L475 AbstractCegarLoop]: Abstraction has 502 states and 601 transitions. [2019-09-16 17:10:06,965 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 601 transitions. [2019-09-16 17:10:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-16 17:10:06,972 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:06,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:06,973 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:06,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1357993179, now seen corresponding path program 1 times [2019-09-16 17:10:06,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:06,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:06,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:06,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:06,978 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:07,154 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 17:10:07,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:07,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:07,155 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:07,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:07,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:07,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:07,156 INFO L87 Difference]: Start difference. First operand 502 states and 601 transitions. Second operand 6 states. [2019-09-16 17:10:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:07,189 INFO L93 Difference]: Finished difference Result 516 states and 617 transitions. [2019-09-16 17:10:07,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:10:07,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2019-09-16 17:10:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:07,193 INFO L225 Difference]: With dead ends: 516 [2019-09-16 17:10:07,194 INFO L226 Difference]: Without dead ends: 516 [2019-09-16 17:10:07,194 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 17:10:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2019-09-16 17:10:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2019-09-16 17:10:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-09-16 17:10:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 611 transitions. [2019-09-16 17:10:07,220 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 611 transitions. Word has length 112 [2019-09-16 17:10:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:07,220 INFO L475 AbstractCegarLoop]: Abstraction has 512 states and 611 transitions. [2019-09-16 17:10:07,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 611 transitions. [2019-09-16 17:10:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-16 17:10:07,223 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:07,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:07,223 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:07,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:07,224 INFO L82 PathProgramCache]: Analyzing trace with hash 581168867, now seen corresponding path program 1 times [2019-09-16 17:10:07,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:07,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:07,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:07,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:07,227 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:07,342 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 17:10:07,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:07,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:10:07,343 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:07,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:10:07,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:10:07,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:10:07,344 INFO L87 Difference]: Start difference. First operand 512 states and 611 transitions. Second operand 8 states. [2019-09-16 17:10:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:07,378 INFO L93 Difference]: Finished difference Result 526 states and 625 transitions. [2019-09-16 17:10:07,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:10:07,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2019-09-16 17:10:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:07,385 INFO L225 Difference]: With dead ends: 526 [2019-09-16 17:10:07,385 INFO L226 Difference]: Without dead ends: 526 [2019-09-16 17:10:07,386 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 17:10:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-09-16 17:10:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 520. [2019-09-16 17:10:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-09-16 17:10:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2019-09-16 17:10:07,411 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 112 [2019-09-16 17:10:07,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:07,414 INFO L475 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2019-09-16 17:10:07,414 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:10:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2019-09-16 17:10:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-16 17:10:07,418 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:07,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:07,419 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1350338882, now seen corresponding path program 1 times [2019-09-16 17:10:07,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:07,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:07,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:07,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:07,425 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:07,523 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 17:10:07,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:07,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:10:07,524 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:07,525 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:10:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:10:07,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:07,526 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 4 states. [2019-09-16 17:10:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:07,828 INFO L93 Difference]: Finished difference Result 1126 states and 1397 transitions. [2019-09-16 17:10:07,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:10:07,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-09-16 17:10:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:07,838 INFO L225 Difference]: With dead ends: 1126 [2019-09-16 17:10:07,838 INFO L226 Difference]: Without dead ends: 1126 [2019-09-16 17:10:07,839 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 17:10:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-09-16 17:10:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1109. [2019-09-16 17:10:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-09-16 17:10:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1360 transitions. [2019-09-16 17:10:07,952 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1360 transitions. Word has length 112 [2019-09-16 17:10:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:07,953 INFO L475 AbstractCegarLoop]: Abstraction has 1109 states and 1360 transitions. [2019-09-16 17:10:07,953 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:10:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1360 transitions. [2019-09-16 17:10:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-16 17:10:07,959 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:07,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:07,959 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:07,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1975342852, now seen corresponding path program 1 times [2019-09-16 17:10:07,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:07,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:07,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:07,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:07,966 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:08,127 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 17:10:08,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:08,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:10:08,127 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:08,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:10:08,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:10:08,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:10:08,129 INFO L87 Difference]: Start difference. First operand 1109 states and 1360 transitions. Second operand 9 states. [2019-09-16 17:10:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:09,555 INFO L93 Difference]: Finished difference Result 2135 states and 2617 transitions. [2019-09-16 17:10:09,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:10:09,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2019-09-16 17:10:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:09,569 INFO L225 Difference]: With dead ends: 2135 [2019-09-16 17:10:09,570 INFO L226 Difference]: Without dead ends: 2135 [2019-09-16 17:10:09,570 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:10:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2019-09-16 17:10:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1904. [2019-09-16 17:10:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2019-09-16 17:10:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2295 transitions. [2019-09-16 17:10:09,694 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2295 transitions. Word has length 116 [2019-09-16 17:10:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:09,695 INFO L475 AbstractCegarLoop]: Abstraction has 1904 states and 2295 transitions. [2019-09-16 17:10:09,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:10:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2295 transitions. [2019-09-16 17:10:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-16 17:10:09,699 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:09,700 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:09,700 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:09,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:09,701 INFO L82 PathProgramCache]: Analyzing trace with hash -283315442, now seen corresponding path program 1 times [2019-09-16 17:10:09,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:09,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:09,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:09,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:09,703 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-16 17:10:09,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:10:09,865 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:10:09,866 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2019-09-16 17:10:09,868 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [181], [197], [198], [199], [200], [210], [212], [217], [220], [221], [222], [223], [225], [230], [232], [233], [237], [240], [244], [250], [277], [278], [281], [285], [286], [289], [291], [294], [301], [304], [307], [311], [312], [315], [316], [317], [319], [320], [321], [323], [326], [328], [331], [334], [343], [345], [346], [349], [351], [357], [361], [364], [365], [366], [390], [392], [393], [460], [461], [471], [479], [480], [481], [482], [483], [484], [485], [486], [487], [521], [522], [523], [524], [527], [528], [529], [530], [531], [532], [537], [538], [541], [542], [543], [544], [545], [546], [547], [548], [549], [550], [551], [552], [553], [554], [559], [560], [561], [562], [565], [566], [567], [568], [569], [570], [571], [572], [573], [575], [576], [579], [580], [581], [582], [585], [586], [587], [589], [590], [595], [596], [597] [2019-09-16 17:10:09,929 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:10:09,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:10:09,998 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:10:10,000 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:10:10,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:10,004 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:10:10,067 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:10:10,067 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:10:10,073 INFO L420 sIntCurrentIteration]: We unified 192 AI predicates to 192 [2019-09-16 17:10:10,073 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:10:10,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:10:10,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:10:10,074 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:10,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:10:10,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:10:10,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:10,076 INFO L87 Difference]: Start difference. First operand 1904 states and 2295 transitions. Second operand 2 states. [2019-09-16 17:10:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:10,076 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:10:10,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:10:10,077 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 193 [2019-09-16 17:10:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:10,077 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:10:10,077 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:10:10,077 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 17:10:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:10:10,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:10:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:10:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:10:10,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 193 [2019-09-16 17:10:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:10,079 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:10:10,079 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:10:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:10:10,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:10:10,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:10:10 BoogieIcfgContainer [2019-09-16 17:10:10,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:10:10,088 INFO L168 Benchmark]: Toolchain (without parser) took 8342.55 ms. Allocated memory was 138.4 MB in the beginning and 343.9 MB in the end (delta: 205.5 MB). Free memory was 83.4 MB in the beginning and 194.8 MB in the end (delta: -111.4 MB). Peak memory consumption was 94.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:10,089 INFO L168 Benchmark]: CDTParser took 1.28 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:10:10,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.20 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 83.2 MB in the beginning and 161.8 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:10,091 INFO L168 Benchmark]: Boogie Preprocessor took 113.64 ms. Allocated memory is still 198.2 MB. Free memory was 161.8 MB in the beginning and 157.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:10,092 INFO L168 Benchmark]: RCFGBuilder took 1239.15 ms. Allocated memory was 198.2 MB in the beginning and 220.2 MB in the end (delta: 22.0 MB). Free memory was 157.5 MB in the beginning and 186.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 91.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:10,093 INFO L168 Benchmark]: TraceAbstraction took 6153.96 ms. Allocated memory was 220.2 MB in the beginning and 343.9 MB in the end (delta: 123.7 MB). Free memory was 185.1 MB in the beginning and 194.8 MB in the end (delta: -9.8 MB). Peak memory consumption was 114.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:10,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 822.20 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 83.2 MB in the beginning and 161.8 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.64 ms. Allocated memory is still 198.2 MB. Free memory was 161.8 MB in the beginning and 157.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1239.15 ms. Allocated memory was 198.2 MB in the beginning and 220.2 MB in the end (delta: 22.0 MB). Free memory was 157.5 MB in the beginning and 186.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 91.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6153.96 ms. Allocated memory was 220.2 MB in the beginning and 343.9 MB in the end (delta: 123.7 MB). Free memory was 185.1 MB in the beginning and 194.8 MB in the end (delta: -9.8 MB). Peak memory consumption was 114.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 134]: 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 45 procedures, 268 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1773 SDtfs, 1283 SDslu, 4018 SDs, 0 SdLazy, 2007 SolverSat, 346 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1904occurred 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, 0.7864583333333334 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 319 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 898 NumberOfCodeBlocks, 898 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 889 ConstructedInterpolants, 0 QuantifiedInterpolants, 160432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 69/78 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...