/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:31:33,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:31:33,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:31:33,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:31:33,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:31:33,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:31:33,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:31:33,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:31:33,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:31:33,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:31:33,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:31:33,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:31:33,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:31:33,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:31:33,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:31:33,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:31:33,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:31:33,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:31:33,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:31:33,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:31:33,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:31:33,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:31:33,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:31:33,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:31:33,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:31:33,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:31:33,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:31:33,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:31:33,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:31:33,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:31:33,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:31:33,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:31:33,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:31:33,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:31:33,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:31:33,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:31:33,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:31:33,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:31:33,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:31:33,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:31:33,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:31:33,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:31:33,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:31:33,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:31:33,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:31:33,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:31:33,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:31:33,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:31:33,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:31:33,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:31:33,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:31:33,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:31:33,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:31:33,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:31:33,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:31:33,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:31:33,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:31:33,554 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:31:33,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:31:33,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:31:33,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:31:33,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:31:33,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:31:33,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:31:33,555 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:31:33,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:31:33,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:31:33,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:31:33,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:31:33,865 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:31:33,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-07-07 12:31:33,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aec2a4c9/3d9f8c22bb64416db1b4fc8b62c52cf2/FLAGbf7de20b7 [2020-07-07 12:31:34,444 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:31:34,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-07-07 12:31:34,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aec2a4c9/3d9f8c22bb64416db1b4fc8b62c52cf2/FLAGbf7de20b7 [2020-07-07 12:31:34,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aec2a4c9/3d9f8c22bb64416db1b4fc8b62c52cf2 [2020-07-07 12:31:34,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:31:34,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:31:34,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:31:34,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:31:34,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:31:34,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:31:34" (1/1) ... [2020-07-07 12:31:34,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dbdefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:34, skipping insertion in model container [2020-07-07 12:31:34,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:31:34" (1/1) ... [2020-07-07 12:31:34,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:31:34,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:31:35,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:31:35,287 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:31:35,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:31:35,431 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:31:35,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35 WrapperNode [2020-07-07 12:31:35,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:31:35,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:31:35,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:31:35,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:31:35,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (1/1) ... [2020-07-07 12:31:35,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:31:35,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:31:35,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:31:35,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:31:35,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (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 [2020-07-07 12:31:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:31:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:31:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:31:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:31:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:31:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:31:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:31:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:31:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:31:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:31:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:31:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:31:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:31:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:31:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:31:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:31:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:31:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:31:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:31:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:31:35,650 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:31:35,650 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:31:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:31:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:31:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:31:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-07-07 12:31:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:31:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:31:35,654 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:31:35,654 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:31:35,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:31:35,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:31:35,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:31:35,655 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:31:35,655 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:31:35,655 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:31:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:31:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:31:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:31:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:31:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:31:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:31:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:31:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:31:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:31:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:31:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:31:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:31:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:31:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:31:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:31:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:31:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:31:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:31:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:31:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:31:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:31:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:31:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:31:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:31:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:31:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:31:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:31:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:31:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:31:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:31:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:31:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:31:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:31:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:31:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-07-07 12:31:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:31:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:31:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:31:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:31:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:31:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:31:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:31:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:31:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:31:36,842 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:31:36,842 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:31:36,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:31:36 BoogieIcfgContainer [2020-07-07 12:31:36,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:31:36,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:31:36,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:31:36,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:31:36,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:31:34" (1/3) ... [2020-07-07 12:31:36,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516bce11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:31:36, skipping insertion in model container [2020-07-07 12:31:36,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:35" (2/3) ... [2020-07-07 12:31:36,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516bce11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:31:36, skipping insertion in model container [2020-07-07 12:31:36,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:31:36" (3/3) ... [2020-07-07 12:31:36,857 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product04.cil.c [2020-07-07 12:31:36,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:31:36,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:31:36,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:31:36,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:31:36,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:31:36,917 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:31:36,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:31:36,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:31:36,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:31:36,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:31:36,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:31:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states. [2020-07-07 12:31:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-07 12:31:36,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:36,982 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] [2020-07-07 12:31:36,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 713311147, now seen corresponding path program 1 times [2020-07-07 12:31:36,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:36,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144103565] [2020-07-07 12:31:36,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,706 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:37,891 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:37,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144103565] [2020-07-07 12:31:37,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:37,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:31:37,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205305684] [2020-07-07 12:31:37,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:31:37,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:37,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:31:37,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:31:37,927 INFO L87 Difference]: Start difference. First operand 271 states. Second operand 3 states. [2020-07-07 12:31:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:39,145 INFO L93 Difference]: Finished difference Result 394 states and 471 transitions. [2020-07-07 12:31:39,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:31:39,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-07-07 12:31:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:39,169 INFO L225 Difference]: With dead ends: 394 [2020-07-07 12:31:39,170 INFO L226 Difference]: Without dead ends: 254 [2020-07-07 12:31:39,176 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 [2020-07-07 12:31:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-07-07 12:31:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 214. [2020-07-07 12:31:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-07 12:31:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2020-07-07 12:31:39,322 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 153 [2020-07-07 12:31:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:39,323 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2020-07-07 12:31:39,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:31:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2020-07-07 12:31:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-07 12:31:39,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:39,331 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] [2020-07-07 12:31:39,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:31:39,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1000146475, now seen corresponding path program 1 times [2020-07-07 12:31:39,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:39,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975862628] [2020-07-07 12:31:39,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,696 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:39,799 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:39,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975862628] [2020-07-07 12:31:39,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:39,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:31:39,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972796494] [2020-07-07 12:31:39,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:31:39,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:39,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:31:39,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:31:39,804 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand 4 states. [2020-07-07 12:31:40,430 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:31:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:41,027 INFO L93 Difference]: Finished difference Result 298 states and 332 transitions. [2020-07-07 12:31:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:31:41,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-07-07 12:31:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:41,032 INFO L225 Difference]: With dead ends: 298 [2020-07-07 12:31:41,032 INFO L226 Difference]: Without dead ends: 237 [2020-07-07 12:31:41,034 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 [2020-07-07 12:31:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-07-07 12:31:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 204. [2020-07-07 12:31:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-07 12:31:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2020-07-07 12:31:41,124 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 154 [2020-07-07 12:31:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:41,124 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2020-07-07 12:31:41,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:31:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2020-07-07 12:31:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 12:31:41,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:41,128 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] [2020-07-07 12:31:41,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:31:41,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:41,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1955216043, now seen corresponding path program 1 times [2020-07-07 12:31:41,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:41,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099425349] [2020-07-07 12:31:41,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,429 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:41,562 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:41,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099425349] [2020-07-07 12:31:41,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:41,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:31:41,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177464120] [2020-07-07 12:31:41,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:31:41,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:41,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:31:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:31:41,566 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand 10 states. [2020-07-07 12:31:42,231 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:42,686 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:31:42,927 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:31:43,152 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:43,388 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:31:43,618 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:44,477 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:31:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:45,944 INFO L93 Difference]: Finished difference Result 550 states and 638 transitions. [2020-07-07 12:31:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:31:45,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-07-07 12:31:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:45,951 INFO L225 Difference]: With dead ends: 550 [2020-07-07 12:31:45,951 INFO L226 Difference]: Without dead ends: 456 [2020-07-07 12:31:45,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:31:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-07-07 12:31:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 357. [2020-07-07 12:31:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-07-07 12:31:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 392 transitions. [2020-07-07 12:31:46,095 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 392 transitions. Word has length 167 [2020-07-07 12:31:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:46,095 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 392 transitions. [2020-07-07 12:31:46,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:31:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 392 transitions. [2020-07-07 12:31:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-07-07 12:31:46,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:46,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:31:46,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:31:46,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash 546702602, now seen corresponding path program 1 times [2020-07-07 12:31:46,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:46,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615008749] [2020-07-07 12:31:46,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,427 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:46,595 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:46,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615008749] [2020-07-07 12:31:46,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:46,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:31:46,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12429149] [2020-07-07 12:31:46,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:31:46,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:46,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:31:46,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:31:46,598 INFO L87 Difference]: Start difference. First operand 357 states and 392 transitions. Second operand 9 states. [2020-07-07 12:31:47,066 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:48,358 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:48,617 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:31:48,901 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:49,156 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:49,410 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:31:49,681 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:49,903 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:50,397 INFO L93 Difference]: Finished difference Result 909 states and 1077 transitions. [2020-07-07 12:31:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 12:31:50,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-07-07 12:31:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:50,409 INFO L225 Difference]: With dead ends: 909 [2020-07-07 12:31:50,412 INFO L226 Difference]: Without dead ends: 662 [2020-07-07 12:31:50,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-07-07 12:31:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-07-07 12:31:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 579. [2020-07-07 12:31:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-07-07 12:31:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 655 transitions. [2020-07-07 12:31:50,620 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 655 transitions. Word has length 170 [2020-07-07 12:31:50,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:50,620 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 655 transitions. [2020-07-07 12:31:50,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:31:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 655 transitions. [2020-07-07 12:31:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-07 12:31:50,624 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:50,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:31:50,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:31:50,625 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash 758250360, now seen corresponding path program 1 times [2020-07-07 12:31:50,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:50,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566085199] [2020-07-07 12:31:50,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,888 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:51,002 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:51,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566085199] [2020-07-07 12:31:51,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:51,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 12:31:51,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703148583] [2020-07-07 12:31:51,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 12:31:51,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:51,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 12:31:51,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 12:31:51,004 INFO L87 Difference]: Start difference. First operand 579 states and 655 transitions. Second operand 6 states. [2020-07-07 12:31:51,429 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:52,404 INFO L93 Difference]: Finished difference Result 1068 states and 1252 transitions. [2020-07-07 12:31:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 12:31:52,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-07-07 12:31:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:52,409 INFO L225 Difference]: With dead ends: 1068 [2020-07-07 12:31:52,409 INFO L226 Difference]: Without dead ends: 599 [2020-07-07 12:31:52,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:31:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-07-07 12:31:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 530. [2020-07-07 12:31:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-07-07 12:31:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 581 transitions. [2020-07-07 12:31:52,607 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 581 transitions. Word has length 175 [2020-07-07 12:31:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:52,608 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 581 transitions. [2020-07-07 12:31:52,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 12:31:52,608 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 581 transitions. [2020-07-07 12:31:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-07 12:31:52,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:52,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:31:52,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:31:52,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash 194624342, now seen corresponding path program 1 times [2020-07-07 12:31:52,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:52,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058121710] [2020-07-07 12:31:52,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:31:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:31:52,912 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:52,913 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:31:52,913 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:31:52,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:31:52,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:31:52 BoogieIcfgContainer [2020-07-07 12:31:52,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:31:52,948 INFO L168 Benchmark]: Toolchain (without parser) took 18119.47 ms. Allocated memory was 141.6 MB in the beginning and 591.4 MB in the end (delta: 449.8 MB). Free memory was 99.0 MB in the beginning and 131.1 MB in the end (delta: -32.1 MB). Peak memory consumption was 417.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:52,955 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:31:52,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.80 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 98.8 MB in the beginning and 167.9 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:52,957 INFO L168 Benchmark]: Boogie Preprocessor took 132.72 ms. Allocated memory is still 199.2 MB. Free memory was 167.9 MB in the beginning and 163.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:52,958 INFO L168 Benchmark]: RCFGBuilder took 1283.32 ms. Allocated memory was 199.2 MB in the beginning and 226.5 MB in the end (delta: 27.3 MB). Free memory was 163.6 MB in the beginning and 177.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 90.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:52,959 INFO L168 Benchmark]: TraceAbstraction took 16095.78 ms. Allocated memory was 226.5 MB in the beginning and 591.4 MB in the end (delta: 364.9 MB). Free memory was 177.2 MB in the beginning and 131.1 MB in the end (delta: 46.1 MB). Peak memory consumption was 411.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:52,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 602.80 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 98.8 MB in the beginning and 167.9 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.72 ms. Allocated memory is still 199.2 MB. Free memory was 167.9 MB in the beginning and 163.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1283.32 ms. Allocated memory was 199.2 MB in the beginning and 226.5 MB in the end (delta: 27.3 MB). Free memory was 163.6 MB in the beginning and 177.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 90.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16095.78 ms. Allocated memory was 226.5 MB in the beginning and 591.4 MB in the end (delta: 364.9 MB). Free memory was 177.2 MB in the beginning and 131.1 MB in the end (delta: 46.1 MB). Peak memory consumption was 411.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 633]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L46] int waterLevel = 1; [L47] int methaneLevelCritical = 0; [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int cleanupTimeShifts = 4; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; [L611] FCALL select_helpers() [L612] FCALL select_features() [L613] CALL, EXPR valid_product() [L521] int retValue_acc ; [L524] retValue_acc = 1 [L525] return (retValue_acc); [L613] RET, EXPR valid_product() [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) [L617] FCALL setup() [L618] CALL runTest() [L600] CALL test() [L808] int splverifierCounter ; [L809] int tmp ; [L810] int tmp___0 ; [L811] int tmp___1 ; [L812] int tmp___2 ; [L815] splverifierCounter = 0 [L817] COND TRUE 1 [L819] COND TRUE splverifierCounter < 4 [L825] tmp = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp) [L829] CALL waterRise() [L64] COND TRUE waterLevel < 2 [L65] waterLevel = waterLevel + 1 [L829] RET waterRise() [L835] tmp___0 = __VERIFIER_nondet_int() [L837] COND FALSE !(\read(tmp___0)) [L845] tmp___2 = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp___2) [L849] CALL startSystem() [L802] systemActive = 1 [L849] RET startSystem() [L864] CALL timeShift() [L684] COND FALSE !(\read(pumpRunning)) [L691] COND TRUE \read(systemActive) [L693] FCALL processEnvironment() [L699] CALL __utac_acc__Specification3_spec__1() [L640] int tmp ; [L641] int tmp___0 ; [L642] int tmp___1 ; [L646] CALL, EXPR isMethaneLevelCritical() [L85] int retValue_acc ; [L88] retValue_acc = methaneLevelCritical [L89] return (retValue_acc); [L646] RET, EXPR isMethaneLevelCritical() [L646] tmp = isMethaneLevelCritical() [L648] COND FALSE !(\read(tmp)) [L652] CALL, EXPR getWaterLevel() [L117] int retValue_acc ; [L120] retValue_acc = waterLevel [L121] return (retValue_acc); [L652] RET, EXPR getWaterLevel() [L652] tmp___0 = getWaterLevel() [L654] COND TRUE tmp___0 == 2 [L656] CALL, EXPR isPumpRunning() [L739] int retValue_acc ; [L742] retValue_acc = pumpRunning [L743] return (retValue_acc); [L656] RET, EXPR isPumpRunning() [L656] tmp___1 = isPumpRunning() [L658] COND FALSE !(\read(tmp___1)) [L662] CALL __automaton_fail() [L633] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 588 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 979 SDtfs, 1553 SDslu, 1438 SDs, 0 SdLazy, 2520 SolverSat, 508 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 324 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...