/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_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:54:04,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:54:04,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:54:04,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:54:04,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:54:04,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:54:04,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:54:04,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:54:04,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:54:04,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:54:04,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:54:04,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:54:04,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:54:04,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:54:04,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:54:04,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:54:04,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:54:04,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:54:04,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:54:04,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:54:04,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:54:04,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:54:04,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:54:04,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:54:04,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:54:04,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:54:04,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:54:04,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:54:04,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:54:04,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:54:04,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:54:04,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:54:04,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:54:04,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:54:04,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:54:04,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:54:04,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:54:04,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:54:04,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:54:04,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:54:04,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:54:04,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:54:04,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:54:04,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:54:04,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:54:04,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:54:04,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:54:04,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:54:04,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:54:04,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:54:04,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:54:04,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:54:04,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:54:04,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:54:04,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:54:04,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:54:04,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:54:04,586 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:54:04,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:54:04,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:54:04,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:04,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:54:04,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:54:04,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:54:04,587 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:54:04,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:54:04,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:54:04,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:54:04,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:54:04,898 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:54:04,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-22 17:54:04,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39c43430/91ff434e7b524b78b062947be3da7ee3/FLAGc25c191cb [2020-08-22 17:54:05,511 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:54:05,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-22 17:54:05,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39c43430/91ff434e7b524b78b062947be3da7ee3/FLAGc25c191cb [2020-08-22 17:54:05,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39c43430/91ff434e7b524b78b062947be3da7ee3 [2020-08-22 17:54:05,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:54:05,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:54:05,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:05,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:54:05,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:54:05,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:05" (1/1) ... [2020-08-22 17:54:05,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:05, skipping insertion in model container [2020-08-22 17:54:05,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:05" (1/1) ... [2020-08-22 17:54:05,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:54:05,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:54:06,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:06,382 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:54:06,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:06,520 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:54:06,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06 WrapperNode [2020-08-22 17:54:06,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:06,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:54:06,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:54:06,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:54:06,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (1/1) ... [2020-08-22 17:54:06,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:54:06,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:54:06,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:54:06,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:54:06,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (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 [2020-08-22 17:54:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:54:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:54:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:54:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:54:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:54:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:54:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:54:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:54:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:54:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:54:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:54:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:54:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:54:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:54:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:54:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:54:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:54:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:54:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:54:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:54:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:54:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:54:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:54:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:54:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 17:54:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:54:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:54:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:54:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:54:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:54:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:54:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:54:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:54:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:54:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:54:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:54:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:54:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:54:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:54:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:54:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:54:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:54:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:54:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:54:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:54:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:54:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:54:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:54:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:54:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:54:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:54:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:54:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 17:54:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:54:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:54:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:54:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:54:06,716 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:54:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:54:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:54:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:54:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:54:07,887 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:54:07,888 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:54:07,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:07 BoogieIcfgContainer [2020-08-22 17:54:07,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:54:07,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:54:07,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:54:07,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:54:07,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:54:05" (1/3) ... [2020-08-22 17:54:07,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6584bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:07, skipping insertion in model container [2020-08-22 17:54:07,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:06" (2/3) ... [2020-08-22 17:54:07,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6584bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:07, skipping insertion in model container [2020-08-22 17:54:07,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:07" (3/3) ... [2020-08-22 17:54:07,904 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-08-22 17:54:07,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:54:07,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:54:07,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:54:07,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:54:07,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:54:07,962 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:54:07,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:54:07,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:54:07,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:54:07,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:54:07,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:54:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states. [2020-08-22 17:54:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:54:08,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:08,003 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] [2020-08-22 17:54:08,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:08,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:08,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2128738986, now seen corresponding path program 1 times [2020-08-22 17:54:08,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:08,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934509790] [2020-08-22 17:54:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:08,086 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,680 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:08,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934509790] [2020-08-22 17:54:08,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:08,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:54:08,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032500776] [2020-08-22 17:54:08,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:54:08,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:54:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:08,877 INFO L87 Difference]: Start difference. First operand 305 states. Second operand 3 states. [2020-08-22 17:54:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:10,310 INFO L93 Difference]: Finished difference Result 476 states and 568 transitions. [2020-08-22 17:54:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:54:10,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:54:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:10,331 INFO L225 Difference]: With dead ends: 476 [2020-08-22 17:54:10,331 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 17:54:10,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 17:54:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 254. [2020-08-22 17:54:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-22 17:54:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 276 transitions. [2020-08-22 17:54:10,481 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 276 transitions. Word has length 142 [2020-08-22 17:54:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:10,482 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 276 transitions. [2020-08-22 17:54:10,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:54:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 276 transitions. [2020-08-22 17:54:10,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:54:10,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:10,488 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] [2020-08-22 17:54:10,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:54:10,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:10,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1334241536, now seen corresponding path program 1 times [2020-08-22 17:54:10,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:10,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013029729] [2020-08-22 17:54:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:10,492 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,905 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:54:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:10,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:11,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013029729] [2020-08-22 17:54:11,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:11,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:54:11,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281992997] [2020-08-22 17:54:11,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:54:11,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:11,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:54:11,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:54:11,039 INFO L87 Difference]: Start difference. First operand 254 states and 276 transitions. Second operand 4 states. [2020-08-22 17:54:11,686 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:12,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:12,661 INFO L93 Difference]: Finished difference Result 389 states and 439 transitions. [2020-08-22 17:54:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:54:12,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:54:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:12,668 INFO L225 Difference]: With dead ends: 389 [2020-08-22 17:54:12,668 INFO L226 Difference]: Without dead ends: 279 [2020-08-22 17:54:12,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:54:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-22 17:54:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 244. [2020-08-22 17:54:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 17:54:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 263 transitions. [2020-08-22 17:54:12,757 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 263 transitions. Word has length 143 [2020-08-22 17:54:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:12,758 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 263 transitions. [2020-08-22 17:54:12,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:54:12,758 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 263 transitions. [2020-08-22 17:54:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 17:54:12,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:12,761 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] [2020-08-22 17:54:12,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:54:12,761 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:12,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1890436660, now seen corresponding path program 1 times [2020-08-22 17:54:12,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:12,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269114531] [2020-08-22 17:54:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:12,765 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,096 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:54:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:54:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:13,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269114531] [2020-08-22 17:54:13,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:13,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:54:13,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119384628] [2020-08-22 17:54:13,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:54:13,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:54:13,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:54:13,300 INFO L87 Difference]: Start difference. First operand 244 states and 263 transitions. Second operand 10 states. [2020-08-22 17:54:13,935 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:14,245 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:14,581 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:54:14,814 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:15,056 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:15,296 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:16,924 INFO L93 Difference]: Finished difference Result 435 states and 501 transitions. [2020-08-22 17:54:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:54:16,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 17:54:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:16,929 INFO L225 Difference]: With dead ends: 435 [2020-08-22 17:54:16,929 INFO L226 Difference]: Without dead ends: 301 [2020-08-22 17:54:16,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 17:54:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-08-22 17:54:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 244. [2020-08-22 17:54:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 17:54:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2020-08-22 17:54:17,009 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 156 [2020-08-22 17:54:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:17,010 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2020-08-22 17:54:17,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:54:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2020-08-22 17:54:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 17:54:17,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:17,013 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] [2020-08-22 17:54:17,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:54:17,014 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:17,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:17,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1501938266, now seen corresponding path program 1 times [2020-08-22 17:54:17,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:17,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266468938] [2020-08-22 17:54:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:17,018 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,344 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:54:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:54:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:17,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266468938] [2020-08-22 17:54:17,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:17,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:54:17,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054356874] [2020-08-22 17:54:17,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:54:17,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:17,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:54:17,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:54:17,505 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 7 states. [2020-08-22 17:54:17,967 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:19,533 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:20,446 INFO L93 Difference]: Finished difference Result 615 states and 731 transitions. [2020-08-22 17:54:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 17:54:20,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-08-22 17:54:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:20,451 INFO L225 Difference]: With dead ends: 615 [2020-08-22 17:54:20,452 INFO L226 Difference]: Without dead ends: 481 [2020-08-22 17:54:20,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:54:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-22 17:54:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 354. [2020-08-22 17:54:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-08-22 17:54:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 381 transitions. [2020-08-22 17:54:20,568 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 381 transitions. Word has length 169 [2020-08-22 17:54:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:20,569 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 381 transitions. [2020-08-22 17:54:20,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:54:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 381 transitions. [2020-08-22 17:54:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 17:54:20,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:20,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:20,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:54:20,572 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:20,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1109115497, now seen corresponding path program 1 times [2020-08-22 17:54:20,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:20,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952466178] [2020-08-22 17:54:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:20,575 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,834 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:20,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:54:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:20,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:54:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:21,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952466178] [2020-08-22 17:54:21,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:21,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 17:54:21,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903456213] [2020-08-22 17:54:21,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 17:54:21,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:21,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 17:54:21,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-08-22 17:54:21,032 INFO L87 Difference]: Start difference. First operand 354 states and 381 transitions. Second operand 13 states. [2020-08-22 17:54:21,546 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:21,807 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:54:22,086 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:22,317 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:22,535 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:23,289 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:23,520 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:23,763 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:24,051 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:24,274 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:25,628 INFO L93 Difference]: Finished difference Result 730 states and 860 transitions. [2020-08-22 17:54:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:54:25,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2020-08-22 17:54:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:25,638 INFO L225 Difference]: With dead ends: 730 [2020-08-22 17:54:25,638 INFO L226 Difference]: Without dead ends: 486 [2020-08-22 17:54:25,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:54:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-22 17:54:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 360. [2020-08-22 17:54:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-08-22 17:54:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 387 transitions. [2020-08-22 17:54:25,765 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 387 transitions. Word has length 193 [2020-08-22 17:54:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:25,766 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 387 transitions. [2020-08-22 17:54:25,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 17:54:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 387 transitions. [2020-08-22 17:54:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 17:54:25,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:25,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:25,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:54:25,769 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:25,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2046057975, now seen corresponding path program 1 times [2020-08-22 17:54:25,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:25,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643910563] [2020-08-22 17:54:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:25,773 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,090 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:54:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:54:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:26,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643910563] [2020-08-22 17:54:26,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:26,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:54:26,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531124333] [2020-08-22 17:54:26,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:54:26,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:26,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:54:26,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:54:26,253 INFO L87 Difference]: Start difference. First operand 360 states and 387 transitions. Second operand 10 states. [2020-08-22 17:54:26,710 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:28,146 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:28,380 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:28,616 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:28,836 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:29,061 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:29,281 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:29,497 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:29,833 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:31,381 INFO L93 Difference]: Finished difference Result 1049 states and 1268 transitions. [2020-08-22 17:54:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:54:31,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-08-22 17:54:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:31,395 INFO L225 Difference]: With dead ends: 1049 [2020-08-22 17:54:31,395 INFO L226 Difference]: Without dead ends: 799 [2020-08-22 17:54:31,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:54:31,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-22 17:54:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 573. [2020-08-22 17:54:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-08-22 17:54:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 622 transitions. [2020-08-22 17:54:31,617 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 622 transitions. Word has length 193 [2020-08-22 17:54:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:31,618 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 622 transitions. [2020-08-22 17:54:31,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:54:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 622 transitions. [2020-08-22 17:54:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-08-22 17:54:31,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:31,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:31,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:54:31,622 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash -135678691, now seen corresponding path program 1 times [2020-08-22 17:54:31,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:31,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454489295] [2020-08-22 17:54:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:31,631 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,014 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:54:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:54:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-22 17:54:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-22 17:54:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:32,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454489295] [2020-08-22 17:54:32,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:32,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:54:32,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982078393] [2020-08-22 17:54:32,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:54:32,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:32,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:54:32,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:54:32,215 INFO L87 Difference]: Start difference. First operand 573 states and 622 transitions. Second operand 11 states. [2020-08-22 17:54:32,690 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:34,091 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:34,346 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:34,576 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:34,800 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:35,043 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:35,303 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:35,546 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:35,830 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:36,988 INFO L93 Difference]: Finished difference Result 934 states and 1156 transitions. [2020-08-22 17:54:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 17:54:36,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 198 [2020-08-22 17:54:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:36,997 INFO L225 Difference]: With dead ends: 934 [2020-08-22 17:54:36,997 INFO L226 Difference]: Without dead ends: 931 [2020-08-22 17:54:36,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-08-22 17:54:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-08-22 17:54:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 573. [2020-08-22 17:54:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-08-22 17:54:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 621 transitions. [2020-08-22 17:54:37,199 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 621 transitions. Word has length 198 [2020-08-22 17:54:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:37,199 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 621 transitions. [2020-08-22 17:54:37,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:54:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 621 transitions. [2020-08-22 17:54:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-22 17:54:37,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:37,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:37,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:54:37,202 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:37,203 INFO L82 PathProgramCache]: Analyzing trace with hash 212216192, now seen corresponding path program 1 times [2020-08-22 17:54:37,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:37,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759776954] [2020-08-22 17:54:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:37,205 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,450 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:54:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:54:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:54:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:54:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:37,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759776954] [2020-08-22 17:54:37,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:37,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:54:37,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718106047] [2020-08-22 17:54:37,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:54:37,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:37,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:54:37,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:54:37,623 INFO L87 Difference]: Start difference. First operand 573 states and 621 transitions. Second operand 11 states. [2020-08-22 17:54:38,828 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:39,102 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:54:39,359 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:54:39,618 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:39,868 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:40,098 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:41,931 INFO L93 Difference]: Finished difference Result 1404 states and 1697 transitions. [2020-08-22 17:54:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:54:41,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-08-22 17:54:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:41,939 INFO L225 Difference]: With dead ends: 1404 [2020-08-22 17:54:41,940 INFO L226 Difference]: Without dead ends: 941 [2020-08-22 17:54:41,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:54:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-08-22 17:54:42,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 589. [2020-08-22 17:54:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-08-22 17:54:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 637 transitions. [2020-08-22 17:54:42,197 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 637 transitions. Word has length 199 [2020-08-22 17:54:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:42,197 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 637 transitions. [2020-08-22 17:54:42,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:54:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 637 transitions. [2020-08-22 17:54:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-22 17:54:42,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:42,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:42,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:54:42,203 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:42,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1893019331, now seen corresponding path program 1 times [2020-08-22 17:54:42,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:42,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065942314] [2020-08-22 17:54:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:42,207 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,484 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:54:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:54:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:54:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:54:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:42,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065942314] [2020-08-22 17:54:42,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:42,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:54:42,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452550569] [2020-08-22 17:54:42,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:54:42,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:42,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:54:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:54:42,686 INFO L87 Difference]: Start difference. First operand 589 states and 637 transitions. Second operand 8 states. [2020-08-22 17:54:43,143 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:43,681 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:46,944 INFO L93 Difference]: Finished difference Result 2087 states and 2631 transitions. [2020-08-22 17:54:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 17:54:46,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-08-22 17:54:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:46,955 INFO L225 Difference]: With dead ends: 2087 [2020-08-22 17:54:46,956 INFO L226 Difference]: Without dead ends: 1608 [2020-08-22 17:54:46,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-22 17:54:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-22 17:54:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1031. [2020-08-22 17:54:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-08-22 17:54:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1153 transitions. [2020-08-22 17:54:47,340 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1153 transitions. Word has length 199 [2020-08-22 17:54:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:47,341 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1153 transitions. [2020-08-22 17:54:47,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:54:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1153 transitions. [2020-08-22 17:54:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 17:54:47,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:47,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:47,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:54:47,344 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:47,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1025322585, now seen corresponding path program 1 times [2020-08-22 17:54:47,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:47,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887100309] [2020-08-22 17:54:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:47,348 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:54:47,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:54:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:54:47,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:54:47,769 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:54:47,770 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:54:47,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:54:47,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:54:47 BoogieIcfgContainer [2020-08-22 17:54:47,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:54:47,815 INFO L168 Benchmark]: Toolchain (without parser) took 41993.98 ms. Allocated memory was 136.3 MB in the beginning and 876.6 MB in the end (delta: 740.3 MB). Free memory was 99.9 MB in the beginning and 225.8 MB in the end (delta: -126.0 MB). Peak memory consumption was 614.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:54:47,821 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 17:54:47,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.13 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 167.1 MB in the end (delta: -67.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-22 17:54:47,824 INFO L168 Benchmark]: Boogie Preprocessor took 97.83 ms. Allocated memory is still 199.8 MB. Free memory was 167.1 MB in the beginning and 162.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:54:47,830 INFO L168 Benchmark]: RCFGBuilder took 1275.25 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 162.8 MB in the beginning and 172.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2020-08-22 17:54:47,831 INFO L168 Benchmark]: TraceAbstraction took 39912.95 ms. Allocated memory was 228.1 MB in the beginning and 876.6 MB in the end (delta: 648.5 MB). Free memory was 172.6 MB in the beginning and 225.8 MB in the end (delta: -53.2 MB). Peak memory consumption was 595.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:54:47,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.13 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 167.1 MB in the end (delta: -67.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.83 ms. Allocated memory is still 199.8 MB. Free memory was 167.1 MB in the beginning and 162.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1275.25 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 162.8 MB in the beginning and 172.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39912.95 ms. Allocated memory was 228.1 MB in the beginning and 876.6 MB in the end (delta: 648.5 MB). Free memory was 172.6 MB in the beginning and 225.8 MB in the end (delta: -53.2 MB). Peak memory consumption was 595.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L808] CALL startSystem() [L761] systemActive = 1 [L808] RET startSystem() [L821] CALL timeShift() [L587] COND FALSE !(\read(pumpRunning)) [L594] COND TRUE \read(systemActive) [L596] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__highWaterSensor() [L616] int tmp ; [L619] COND TRUE ! pumpRunning [L621] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L621] RET, EXPR isHighWaterLevel() [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L625] CALL activatePump() [L670] pumpRunning = 1 [L625] RET activatePump() [L660] RET processEnvironment__wrappee__highWaterSensor() [L596] RET processEnvironment() [L602] CALL __utac_acc__Specification1_spec__1() [L183] int tmp ; [L184] int tmp___0 ; [L188] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L188] RET, EXPR isMethaneLevelCritical() [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L192] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L192] RET, EXPR isPumpRunning() [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) [L196] CALL __automaton_fail() [L837] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 32.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2186 SDtfs, 5388 SDslu, 4353 SDs, 0 SdLazy, 8686 SolverSat, 1719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 253 SyntacticMatches, 3 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1031occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1900 StatesRemovedByMinimization, 9 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...