/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:22:00,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:22:00,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:22:00,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:22:00,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:22:00,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:22:00,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:22:00,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:22:00,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:22:00,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:22:00,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:22:00,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:22:00,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:22:00,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:22:00,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:22:00,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:22:00,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:22:00,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:22:00,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:22:00,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:22:00,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:22:00,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:22:00,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:22:00,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:22:00,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:22:00,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:22:00,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:22:00,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:22:00,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:22:00,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:22:00,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:22:00,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:22:00,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:22:00,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:22:00,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:22:00,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:22:00,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:22:00,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:22:00,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:22:00,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:22:00,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:22:00,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:22:00,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:22:00,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:22:00,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:22:00,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:22:00,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:22:00,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:22:00,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:22:00,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:22:00,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:22:00,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:22:00,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:22:00,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:22:00,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:22:00,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:22:00,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:22:00,614 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:22:00,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:22:00,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:22:00,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:22:00,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:22:00,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:22:00,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:22:00,615 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:22:01,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:22:01,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:22:01,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:22:01,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:22:01,084 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:22:01,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-09-04 15:22:01,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03214b219/ab7d6f141d3e423793c3e644eefabd03/FLAG83662bbc2 [2020-09-04 15:22:01,725 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:22:01,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-09-04 15:22:01,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03214b219/ab7d6f141d3e423793c3e644eefabd03/FLAG83662bbc2 [2020-09-04 15:22:01,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03214b219/ab7d6f141d3e423793c3e644eefabd03 [2020-09-04 15:22:02,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:22:02,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:22:02,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:22:02,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:22:02,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:22:02,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:22:01" (1/1) ... [2020-09-04 15:22:02,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02, skipping insertion in model container [2020-09-04 15:22:02,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:22:01" (1/1) ... [2020-09-04 15:22:02,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:22:02,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:22:02,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:22:02,627 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:22:02,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:22:02,739 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:22:02,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02 WrapperNode [2020-09-04 15:22:02,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:22:02,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:22:02,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:22:02,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:22:02,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... [2020-09-04 15:22:02,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:22:02,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:22:02,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:22:02,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:22:02,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:22:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:22:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:22:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:22:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:22:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:22:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:22:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:22:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:22:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:22:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:22:02,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:22:02,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:22:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:22:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:22:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:22:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:22:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:22:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:22:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:22:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:22:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:22:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:22:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:22:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:22:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:22:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:22:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:22:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:22:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:22:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:22:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:22:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:22:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:22:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:22:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:22:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:22:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:22:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:22:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:22:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:22:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:22:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:22:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:22:02,979 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:22:02,979 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:22:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:22:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:22:02,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:22:02,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:22:04,064 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:22:04,064 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:22:04,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:22:04 BoogieIcfgContainer [2020-09-04 15:22:04,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:22:04,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:22:04,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:22:04,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:22:04,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:22:01" (1/3) ... [2020-09-04 15:22:04,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7515514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:22:04, skipping insertion in model container [2020-09-04 15:22:04,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:22:02" (2/3) ... [2020-09-04 15:22:04,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7515514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:22:04, skipping insertion in model container [2020-09-04 15:22:04,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:22:04" (3/3) ... [2020-09-04 15:22:04,080 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product04.cil.c [2020-09-04 15:22:04,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:22:04,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:22:04,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:22:04,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:22:04,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:22:04,144 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:22:04,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:22:04,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:22:04,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:22:04,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:22:04,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:22:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states. [2020-09-04 15:22:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:22:04,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:04,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:22:04,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 713311147, now seen corresponding path program 1 times [2020-09-04 15:22:04,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:04,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069047562] [2020-09-04 15:22:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:04,283 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:04,979 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:22:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:22:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:05,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069047562] [2020-09-04 15:22:05,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:05,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:22:05,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804800672] [2020-09-04 15:22:05,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:22:05,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:05,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:22:05,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:22:05,222 INFO L87 Difference]: Start difference. First operand 271 states. Second operand 3 states. [2020-09-04 15:22:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:06,422 INFO L93 Difference]: Finished difference Result 394 states and 471 transitions. [2020-09-04 15:22:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:22:06,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:22:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:06,446 INFO L225 Difference]: With dead ends: 394 [2020-09-04 15:22:06,447 INFO L226 Difference]: Without dead ends: 254 [2020-09-04 15:22:06,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:22:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-04 15:22:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 214. [2020-09-04 15:22:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-04 15:22:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2020-09-04 15:22:06,583 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 153 [2020-09-04 15:22:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:06,584 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2020-09-04 15:22:06,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:22:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2020-09-04 15:22:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:22:06,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:06,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:22:06,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:22:06,590 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:06,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1000146475, now seen corresponding path program 1 times [2020-09-04 15:22:06,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:06,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65575923] [2020-09-04 15:22:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:06,595 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,944 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:22:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:22:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:22:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:07,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65575923] [2020-09-04 15:22:07,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:07,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:22:07,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396045131] [2020-09-04 15:22:07,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:22:07,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:07,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:22:07,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:22:07,042 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand 4 states. [2020-09-04 15:22:07,683 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:22:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:08,372 INFO L93 Difference]: Finished difference Result 298 states and 332 transitions. [2020-09-04 15:22:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:22:08,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:22:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:08,379 INFO L225 Difference]: With dead ends: 298 [2020-09-04 15:22:08,379 INFO L226 Difference]: Without dead ends: 237 [2020-09-04 15:22:08,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:22:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-04 15:22:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 204. [2020-09-04 15:22:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-04 15:22:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2020-09-04 15:22:08,448 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 154 [2020-09-04 15:22:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:08,449 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2020-09-04 15:22:08,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:22:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2020-09-04 15:22:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:22:08,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:08,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:22:08,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:22:08,452 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1955216043, now seen corresponding path program 1 times [2020-09-04 15:22:08,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:08,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135804173] [2020-09-04 15:22:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:08,456 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,805 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:22:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:22:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:22:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:22:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:09,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135804173] [2020-09-04 15:22:09,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:09,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:22:09,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771378736] [2020-09-04 15:22:09,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:22:09,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:22:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:22:09,011 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand 10 states. [2020-09-04 15:22:09,680 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:10,199 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:22:10,513 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:22:10,754 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:11,054 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:11,360 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:12,357 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:22:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:14,010 INFO L93 Difference]: Finished difference Result 550 states and 638 transitions. [2020-09-04 15:22:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:22:14,011 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:22:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:14,017 INFO L225 Difference]: With dead ends: 550 [2020-09-04 15:22:14,017 INFO L226 Difference]: Without dead ends: 456 [2020-09-04 15:22:14,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:22:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-09-04 15:22:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 357. [2020-09-04 15:22:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-09-04 15:22:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 392 transitions. [2020-09-04 15:22:14,165 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 392 transitions. Word has length 167 [2020-09-04 15:22:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:14,166 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 392 transitions. [2020-09-04 15:22:14,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:22:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 392 transitions. [2020-09-04 15:22:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 15:22:14,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:14,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:22:14,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:22:14,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:14,194 INFO L82 PathProgramCache]: Analyzing trace with hash 546702602, now seen corresponding path program 1 times [2020-09-04 15:22:14,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:14,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131092698] [2020-09-04 15:22:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:14,197 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,596 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:22:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:22:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:22:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:22:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 15:22:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:14,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131092698] [2020-09-04 15:22:14,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:14,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:22:14,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279160228] [2020-09-04 15:22:14,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:22:14,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:14,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:22:14,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:22:14,766 INFO L87 Difference]: Start difference. First operand 357 states and 392 transitions. Second operand 9 states. [2020-09-04 15:22:15,347 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:16,830 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:17,180 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:17,572 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:17,893 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:18,200 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:22:18,545 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:18,848 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:22:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:19,404 INFO L93 Difference]: Finished difference Result 909 states and 1077 transitions. [2020-09-04 15:22:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:22:19,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-09-04 15:22:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:19,411 INFO L225 Difference]: With dead ends: 909 [2020-09-04 15:22:19,412 INFO L226 Difference]: Without dead ends: 662 [2020-09-04 15:22:19,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:22:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-09-04 15:22:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 579. [2020-09-04 15:22:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-09-04 15:22:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 655 transitions. [2020-09-04 15:22:19,590 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 655 transitions. Word has length 170 [2020-09-04 15:22:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:19,590 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 655 transitions. [2020-09-04 15:22:19,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:22:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 655 transitions. [2020-09-04 15:22:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-04 15:22:19,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:19,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:22:19,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:22:19,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:19,595 INFO L82 PathProgramCache]: Analyzing trace with hash 758250360, now seen corresponding path program 1 times [2020-09-04 15:22:19,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:19,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555918606] [2020-09-04 15:22:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:19,598 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:19,967 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:22:19,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:22:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:22:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:22:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:22:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:22:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:22:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:22:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:22:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-04 15:22:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 15:22:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-04 15:22:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:22:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:22:20,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555918606] [2020-09-04 15:22:20,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:22:20,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:22:20,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965027490] [2020-09-04 15:22:20,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:22:20,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:22:20,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:22:20,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:22:20,102 INFO L87 Difference]: Start difference. First operand 579 states and 655 transitions. Second operand 6 states. [2020-09-04 15:22:20,622 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:22:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:22:21,671 INFO L93 Difference]: Finished difference Result 1068 states and 1252 transitions. [2020-09-04 15:22:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:22:21,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-09-04 15:22:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:22:21,676 INFO L225 Difference]: With dead ends: 1068 [2020-09-04 15:22:21,683 INFO L226 Difference]: Without dead ends: 599 [2020-09-04 15:22:21,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:22:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-09-04 15:22:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 530. [2020-09-04 15:22:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-09-04 15:22:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 581 transitions. [2020-09-04 15:22:21,887 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 581 transitions. Word has length 175 [2020-09-04 15:22:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:22:21,888 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 581 transitions. [2020-09-04 15:22:21,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:22:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 581 transitions. [2020-09-04 15:22:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-04 15:22:21,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:22:21,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:22:21,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:22:21,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:22:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:22:21,892 INFO L82 PathProgramCache]: Analyzing trace with hash 194624342, now seen corresponding path program 1 times [2020-09-04 15:22:21,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:22:21,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136321753] [2020-09-04 15:22:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:22:21,895 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:22:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:22:21,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:22:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:22:22,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:22:22,193 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:22:22,193 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:22:22,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:22:22,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:22:22 BoogieIcfgContainer [2020-09-04 15:22:22,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:22:22,224 INFO L168 Benchmark]: Toolchain (without parser) took 20213.38 ms. Allocated memory was 145.2 MB in the beginning and 586.7 MB in the end (delta: 441.5 MB). Free memory was 102.1 MB in the beginning and 491.5 MB in the end (delta: -389.4 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:22,224 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:22:22,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.12 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 173.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:22,226 INFO L168 Benchmark]: Boogie Preprocessor took 116.93 ms. Allocated memory is still 202.9 MB. Free memory was 173.5 MB in the beginning and 169.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:22,227 INFO L168 Benchmark]: RCFGBuilder took 1213.18 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 169.3 MB in the beginning and 184.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:22,228 INFO L168 Benchmark]: TraceAbstraction took 18148.69 ms. Allocated memory was 235.4 MB in the beginning and 586.7 MB in the end (delta: 351.3 MB). Free memory was 182.7 MB in the beginning and 491.5 MB in the end (delta: -308.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:22:22,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.12 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 173.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.93 ms. Allocated memory is still 202.9 MB. Free memory was 173.5 MB in the beginning and 169.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1213.18 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 169.3 MB in the beginning and 184.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18148.69 ms. Allocated memory was 235.4 MB in the beginning and 586.7 MB in the end (delta: 351.3 MB). Free memory was 182.7 MB in the beginning and 491.5 MB in the end (delta: -308.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 633]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L46] int waterLevel = 1; [L47] int methaneLevelCritical = 0; [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int cleanupTimeShifts = 4; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; [L611] FCALL select_helpers() [L612] FCALL select_features() [L613] CALL, EXPR valid_product() [L521] int retValue_acc ; [L524] retValue_acc = 1 [L525] return (retValue_acc); [L613] RET, EXPR valid_product() [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) [L617] FCALL setup() [L618] CALL runTest() [L600] CALL test() [L808] int splverifierCounter ; [L809] int tmp ; [L810] int tmp___0 ; [L811] int tmp___1 ; [L812] int tmp___2 ; [L815] splverifierCounter = 0 [L817] COND TRUE 1 [L819] COND TRUE splverifierCounter < 4 [L825] tmp = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp) [L829] CALL waterRise() [L64] COND TRUE waterLevel < 2 [L65] waterLevel = waterLevel + 1 [L829] RET waterRise() [L835] tmp___0 = __VERIFIER_nondet_int() [L837] COND FALSE !(\read(tmp___0)) [L845] tmp___2 = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp___2) [L849] CALL startSystem() [L802] systemActive = 1 [L849] RET startSystem() [L864] CALL timeShift() [L684] COND FALSE !(\read(pumpRunning)) [L691] COND TRUE \read(systemActive) [L693] FCALL processEnvironment() [L699] CALL __utac_acc__Specification3_spec__1() [L640] int tmp ; [L641] int tmp___0 ; [L642] int tmp___1 ; [L646] CALL, EXPR isMethaneLevelCritical() [L85] int retValue_acc ; [L88] retValue_acc = methaneLevelCritical [L89] return (retValue_acc); [L646] RET, EXPR isMethaneLevelCritical() [L646] tmp = isMethaneLevelCritical() [L648] COND FALSE !(\read(tmp)) [L652] CALL, EXPR getWaterLevel() [L117] int retValue_acc ; [L120] retValue_acc = waterLevel [L121] return (retValue_acc); [L652] RET, EXPR getWaterLevel() [L652] tmp___0 = getWaterLevel() [L654] COND TRUE tmp___0 == 2 [L656] CALL, EXPR isPumpRunning() [L739] int retValue_acc ; [L742] retValue_acc = pumpRunning [L743] return (retValue_acc); [L656] RET, EXPR isPumpRunning() [L656] tmp___1 = isPumpRunning() [L658] COND FALSE !(\read(tmp___1)) [L662] CALL __automaton_fail() [L633] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 588 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 979 SDtfs, 1553 SDslu, 1438 SDs, 0 SdLazy, 2520 SolverSat, 508 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 324 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...