/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:03,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:03,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:03,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:03,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:03,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:03,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:03,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:03,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:03,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:03,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:03,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:03,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:03,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:03,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:03,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:03,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:03,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:03,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:03,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:03,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:03,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:03,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:03,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:03,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:03,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:03,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:03,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:03,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:03,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:03,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:03,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:03,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:03,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:03,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:03,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:03,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:03,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:03,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:03,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:03,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:03,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:23:03,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:03,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:03,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:03,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:03,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:03,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:03,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:03,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:03,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:03,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:03,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:03,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:03,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:03,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:03,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:03,403 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:03,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:03,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:03,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:03,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:03,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:03,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:03,405 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:03,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:03,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:03,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:03,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:03,897 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:03,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-09-04 15:23:03,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61324f0b/02f253c00cc84c4cb0155f16fcba9c37/FLAG0166ad6a1 [2020-09-04 15:23:04,673 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:04,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-09-04 15:23:04,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61324f0b/02f253c00cc84c4cb0155f16fcba9c37/FLAG0166ad6a1 [2020-09-04 15:23:04,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61324f0b/02f253c00cc84c4cb0155f16fcba9c37 [2020-09-04 15:23:04,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:04,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:04,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:04,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:04,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:04,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:04" (1/1) ... [2020-09-04 15:23:04,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:04, skipping insertion in model container [2020-09-04 15:23:04,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:04" (1/1) ... [2020-09-04 15:23:04,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:04,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:23:05,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:05,442 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:23:05,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:05,570 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:23:05,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05 WrapperNode [2020-09-04 15:23:05,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:05,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:23:05,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:23:05,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:23:05,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... [2020-09-04 15:23:05,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:23:05,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:23:05,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:23:05,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:23:05,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:05,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:23:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:23:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:23:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:23:05,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:23:05,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:23:05,810 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:23:05,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:23:05,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:05,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:05,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:05,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:23:05,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:23:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:23:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:23:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:23:05,813 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-04 15:23:05,814 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:23:05,814 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-09-04 15:23:05,815 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:23:05,815 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:23:05,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:23:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:23:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:23:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:23:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:23:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:23:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:23:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:23:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:23:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:23:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:23:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:23:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:23:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:23:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:23:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:23:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:23:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:23:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:23:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:23:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:23:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:23:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:23:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:23:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:23:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:23:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:23:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:23:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:23:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:23:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:23:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:23:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-04 15:23:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:23:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-09-04 15:23:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:23:05,829 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:23:05,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:23:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:23:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:23:06,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:23:06,956 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:23:06,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:06 BoogieIcfgContainer [2020-09-04 15:23:06,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:23:06,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:23:06,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:23:06,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:23:06,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:04" (1/3) ... [2020-09-04 15:23:06,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148e81ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:06, skipping insertion in model container [2020-09-04 15:23:06,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:05" (2/3) ... [2020-09-04 15:23:06,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148e81ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:06, skipping insertion in model container [2020-09-04 15:23:06,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:06" (3/3) ... [2020-09-04 15:23:06,977 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2020-09-04 15:23:06,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:23:07,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:23:07,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:23:07,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:23:07,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:23:07,052 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:23:07,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:23:07,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:23:07,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:23:07,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:23:07,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:23:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states. [2020-09-04 15:23:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:23:07,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:07,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:07,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:07,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2058846521, now seen corresponding path program 1 times [2020-09-04 15:23:07,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:07,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673018559] [2020-09-04 15:23:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:07,196 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:07,932 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:23:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:08,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673018559] [2020-09-04 15:23:08,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:08,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:23:08,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84681750] [2020-09-04 15:23:08,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:23:08,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:23:08,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:08,193 INFO L87 Difference]: Start difference. First operand 295 states. Second operand 3 states. [2020-09-04 15:23:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:09,511 INFO L93 Difference]: Finished difference Result 436 states and 524 transitions. [2020-09-04 15:23:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:23:09,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:23:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:09,549 INFO L225 Difference]: With dead ends: 436 [2020-09-04 15:23:09,549 INFO L226 Difference]: Without dead ends: 276 [2020-09-04 15:23:09,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-04 15:23:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2020-09-04 15:23:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-04 15:23:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2020-09-04 15:23:09,715 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 153 [2020-09-04 15:23:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:09,717 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2020-09-04 15:23:09,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:23:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2020-09-04 15:23:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:23:09,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:09,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:09,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:23:09,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1620128513, now seen corresponding path program 1 times [2020-09-04 15:23:09,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:09,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740628893] [2020-09-04 15:23:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:09,728 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,101 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:23:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:23:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:10,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740628893] [2020-09-04 15:23:10,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:10,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:23:10,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653374812] [2020-09-04 15:23:10,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:23:10,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:10,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:23:10,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:23:10,186 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand 4 states. [2020-09-04 15:23:10,808 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:11,643 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2020-09-04 15:23:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:23:11,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:23:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:11,649 INFO L225 Difference]: With dead ends: 343 [2020-09-04 15:23:11,649 INFO L226 Difference]: Without dead ends: 259 [2020-09-04 15:23:11,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:23:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-04 15:23:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 224. [2020-09-04 15:23:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-04 15:23:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 241 transitions. [2020-09-04 15:23:11,717 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 241 transitions. Word has length 154 [2020-09-04 15:23:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:11,718 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 241 transitions. [2020-09-04 15:23:11,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:23:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 241 transitions. [2020-09-04 15:23:11,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:23:11,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:11,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:11,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:23:11,722 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:11,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:11,722 INFO L82 PathProgramCache]: Analyzing trace with hash 43350617, now seen corresponding path program 1 times [2020-09-04 15:23:11,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:11,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989191586] [2020-09-04 15:23:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:11,726 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,133 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:23:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:23:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:23:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:23:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:12,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989191586] [2020-09-04 15:23:12,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:12,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:23:12,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445995187] [2020-09-04 15:23:12,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:23:12,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:23:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:23:12,314 INFO L87 Difference]: Start difference. First operand 224 states and 241 transitions. Second operand 10 states. [2020-09-04 15:23:12,925 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:13,335 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:23:13,596 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:23:13,927 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:14,230 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:14,520 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:15,463 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:17,686 INFO L93 Difference]: Finished difference Result 614 states and 719 transitions. [2020-09-04 15:23:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:23:17,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:23:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:17,696 INFO L225 Difference]: With dead ends: 614 [2020-09-04 15:23:17,696 INFO L226 Difference]: Without dead ends: 500 [2020-09-04 15:23:17,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:23:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-09-04 15:23:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 409. [2020-09-04 15:23:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-09-04 15:23:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 458 transitions. [2020-09-04 15:23:17,877 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 458 transitions. Word has length 167 [2020-09-04 15:23:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:17,878 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 458 transitions. [2020-09-04 15:23:17,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:23:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 458 transitions. [2020-09-04 15:23:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:23:17,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:17,881 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] [2020-09-04 15:23:17,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:23:17,882 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1596285256, now seen corresponding path program 1 times [2020-09-04 15:23:17,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:17,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060543615] [2020-09-04 15:23:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:17,885 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,267 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:23:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:23:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 15:23:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 15:23:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:18,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060543615] [2020-09-04 15:23:18,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:18,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:18,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296026168] [2020-09-04 15:23:18,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:18,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:18,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:18,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:18,451 INFO L87 Difference]: Start difference. First operand 409 states and 458 transitions. Second operand 9 states. [2020-09-04 15:23:18,898 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:20,661 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:21,003 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:21,335 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:21,670 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:21,964 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:22,267 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:22,559 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:23,341 INFO L93 Difference]: Finished difference Result 1085 states and 1315 transitions. [2020-09-04 15:23:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:23:23,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-04 15:23:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:23,349 INFO L225 Difference]: With dead ends: 1085 [2020-09-04 15:23:23,349 INFO L226 Difference]: Without dead ends: 786 [2020-09-04 15:23:23,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:23:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-09-04 15:23:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-09-04 15:23:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-09-04 15:23:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 793 transitions. [2020-09-04 15:23:23,592 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 793 transitions. Word has length 172 [2020-09-04 15:23:23,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:23,592 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 793 transitions. [2020-09-04 15:23:23,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 793 transitions. [2020-09-04 15:23:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:23:23,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:23,597 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] [2020-09-04 15:23:23,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:23:23,598 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash -469830621, now seen corresponding path program 1 times [2020-09-04 15:23:23,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:23,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287903586] [2020-09-04 15:23:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:23,601 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:23,972 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:23:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:23:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:23:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:23:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-04 15:23:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:24,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287903586] [2020-09-04 15:23:24,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:24,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:23:24,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815504855] [2020-09-04 15:23:24,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:23:24,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:23:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:23:24,159 INFO L87 Difference]: Start difference. First operand 687 states and 793 transitions. Second operand 6 states. [2020-09-04 15:23:24,673 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:25,676 INFO L93 Difference]: Finished difference Result 1204 states and 1445 transitions. [2020-09-04 15:23:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 15:23:25,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-04 15:23:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:25,685 INFO L225 Difference]: With dead ends: 1204 [2020-09-04 15:23:25,685 INFO L226 Difference]: Without dead ends: 627 [2020-09-04 15:23:25,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:23:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-04 15:23:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 550. [2020-09-04 15:23:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-09-04 15:23:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 601 transitions. [2020-09-04 15:23:25,916 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 601 transitions. Word has length 177 [2020-09-04 15:23:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:25,917 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 601 transitions. [2020-09-04 15:23:25,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:23:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 601 transitions. [2020-09-04 15:23:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:23:25,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:25,921 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] [2020-09-04 15:23:25,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:23:25,922 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:25,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:25,922 INFO L82 PathProgramCache]: Analyzing trace with hash 204325415, now seen corresponding path program 1 times [2020-09-04 15:23:25,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:25,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128046945] [2020-09-04 15:23:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:25,925 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:26,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:26,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:26,362 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:23:26,363 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:23:26,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:23:26,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:23:26 BoogieIcfgContainer [2020-09-04 15:23:26,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:23:26,402 INFO L168 Benchmark]: Toolchain (without parser) took 21509.29 ms. Allocated memory was 143.1 MB in the beginning and 567.3 MB in the end (delta: 424.1 MB). Free memory was 102.8 MB in the beginning and 310.9 MB in the end (delta: -208.1 MB). Peak memory consumption was 216.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:26,407 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 143.1 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:23:26,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.46 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 174.3 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:26,410 INFO L168 Benchmark]: Boogie Preprocessor took 132.30 ms. Allocated memory is still 205.5 MB. Free memory was 174.3 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:26,411 INFO L168 Benchmark]: RCFGBuilder took 1259.51 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 170.4 MB in the beginning and 175.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:26,412 INFO L168 Benchmark]: TraceAbstraction took 19433.95 ms. Allocated memory was 234.9 MB in the beginning and 567.3 MB in the end (delta: 332.4 MB). Free memory was 175.6 MB in the beginning and 310.9 MB in the end (delta: -135.3 MB). Peak memory consumption was 197.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:26,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 143.1 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.46 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 174.3 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.30 ms. Allocated memory is still 205.5 MB. Free memory was 174.3 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1259.51 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 170.4 MB in the beginning and 175.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19433.95 ms. Allocated memory was 234.9 MB in the beginning and 567.3 MB in the end (delta: 332.4 MB). Free memory was 175.6 MB in the beginning and 310.9 MB in the end (delta: -135.3 MB). Peak memory consumption was 197.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L322] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L796] int retValue_acc ; [L799] retValue_acc = 1 [L800] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L522] int splverifierCounter ; [L523] int tmp ; [L524] int tmp___0 ; [L525] int tmp___1 ; [L526] int tmp___2 ; [L529] splverifierCounter = 0 [L531] COND TRUE 1 [L533] COND TRUE splverifierCounter < 4 [L539] tmp = __VERIFIER_nondet_int() [L541] COND TRUE \read(tmp) [L543] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L543] RET waterRise() [L549] tmp___0 = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp___0)) [L559] tmp___2 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___2)) [L567] tmp___1 = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp___1) [L571] CALL stopSystem() [L750] COND FALSE !(\read(pumpRunning)) [L757] systemActive = 0 [L571] RET stopSystem() [L578] CALL timeShift() [L604] COND FALSE !(\read(pumpRunning)) [L611] COND FALSE !(\read(systemActive)) [L619] CALL __utac_acc__Specification3_spec__1() [L887] int tmp ; [L888] int tmp___0 ; [L889] int tmp___1 ; [L893] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND FALSE !(\read(tmp)) [L899] CALL, EXPR getWaterLevel() [L877] int retValue_acc ; [L880] retValue_acc = waterLevel [L881] return (retValue_acc); [L899] RET, EXPR getWaterLevel() [L899] tmp___0 = getWaterLevel() [L901] COND TRUE tmp___0 == 2 [L903] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L903] RET, EXPR isPumpRunning() [L903] tmp___1 = isPumpRunning() [L905] COND FALSE !(\read(tmp___1)) [L909] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1096 SDtfs, 1773 SDslu, 1538 SDs, 0 SdLazy, 2961 SolverSat, 641 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 344 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...