/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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:57,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:57,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:57,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:57,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:57,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:57,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:57,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:57,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:57,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:57,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:57,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:57,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:57,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:57,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:57,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:57,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:58,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:58,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:58,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:58,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:58,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:58,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:58,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:58,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:58,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:58,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:58,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:58,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:58,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:58,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:58,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:58,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:58,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:58,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:58,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:58,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:58,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:58,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:58,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:58,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:58,032 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 15:23:58,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:58,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:58,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:58,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:58,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:58,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:58,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:58,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:58,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:58,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:58,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:58,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:58,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:58,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:58,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:58,075 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:58,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:58,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:58,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:58,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:58,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:58,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:58,076 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:58,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:58,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:58,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:58,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:58,578 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:58,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-09-04 15:23:58,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1afd0216/af280d6cd18146378d78ffbe05a274d9/FLAGfc4bc2668 [2020-09-04 15:23:59,256 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:59,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-09-04 15:23:59,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1afd0216/af280d6cd18146378d78ffbe05a274d9/FLAGfc4bc2668 [2020-09-04 15:23:59,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1afd0216/af280d6cd18146378d78ffbe05a274d9 [2020-09-04 15:23:59,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:59,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:59,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:59,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:59,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:59,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:59" (1/1) ... [2020-09-04 15:23:59,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84c84f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:59, skipping insertion in model container [2020-09-04 15:23:59,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:59" (1/1) ... [2020-09-04 15:23:59,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:59,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:24:00,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:24:00,052 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:24:00,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:24:00,280 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:24:00,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00 WrapperNode [2020-09-04 15:24:00,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:24:00,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:24:00,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:24:00,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:24:00,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (1/1) ... [2020-09-04 15:24:00,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:24:00,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:24:00,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:24:00,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:24:00,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (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 15:24:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:24:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:24:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:24:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:24:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:24:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:24:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:24:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:24:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:24:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:24:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:24:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:24:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:24:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:24:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:24:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:24:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:24:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:24:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:24:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:24:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:24:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:24:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:24:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:24:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-04 15:24:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:24:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:24:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:24:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:24:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:24:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:24:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:24:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:24:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:24:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:24:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:24:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:24:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:24:00,464 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:24:00,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:24:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:24:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:24:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:24:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:24:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:24:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:24:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:24:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:24:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:24:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:24:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:24:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:24:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:24:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:24:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:24:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:24:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:24:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:24:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:24:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:24:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:24:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:24:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:24:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:24:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:24:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:24:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:24:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:24:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:24:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:24:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:24:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:24:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:24:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:24:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-04 15:24:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:24:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:24:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:24:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:24:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:24:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:24:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:24:01,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:24:01,592 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:24:01,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:24:01 BoogieIcfgContainer [2020-09-04 15:24:01,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:24:01,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:24:01,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:24:01,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:24:01,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:59" (1/3) ... [2020-09-04 15:24:01,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0dae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:24:01, skipping insertion in model container [2020-09-04 15:24:01,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:00" (2/3) ... [2020-09-04 15:24:01,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0dae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:24:01, skipping insertion in model container [2020-09-04 15:24:01,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:24:01" (3/3) ... [2020-09-04 15:24:01,609 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2020-09-04 15:24:01,621 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:24:01,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:24:01,656 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:24:01,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:24:01,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:24:01,687 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:24:01,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:24:01,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:24:01,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:24:01,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:24:01,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:24:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2020-09-04 15:24:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:24:01,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:01,740 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 15:24:01,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:01,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2091214271, now seen corresponding path program 1 times [2020-09-04 15:24:01,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:01,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556813948] [2020-09-04 15:24:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:01,855 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,529 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:24:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:24:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:24:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:02,697 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 15:24:02,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556813948] [2020-09-04 15:24:02,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:02,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:24:02,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576412569] [2020-09-04 15:24:02,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:24:02,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:02,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:24:02,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:24:02,730 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 3 states. [2020-09-04 15:24:04,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:04,185 INFO L93 Difference]: Finished difference Result 486 states and 580 transitions. [2020-09-04 15:24:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:24:04,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:24:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:04,207 INFO L225 Difference]: With dead ends: 486 [2020-09-04 15:24:04,208 INFO L226 Difference]: Without dead ends: 301 [2020-09-04 15:24:04,214 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 15:24:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-04 15:24:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2020-09-04 15:24:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-04 15:24:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 282 transitions. [2020-09-04 15:24:04,351 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 282 transitions. Word has length 153 [2020-09-04 15:24:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:04,352 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 282 transitions. [2020-09-04 15:24:04,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:24:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 282 transitions. [2020-09-04 15:24:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:24:04,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:04,358 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 15:24:04,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:24:04,359 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:04,359 INFO L82 PathProgramCache]: Analyzing trace with hash 770712739, now seen corresponding path program 1 times [2020-09-04 15:24:04,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:04,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471937124] [2020-09-04 15:24:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:04,363 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,857 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:24:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:24:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:24:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:04,933 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 15:24:04,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471937124] [2020-09-04 15:24:04,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:04,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:24:04,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126422102] [2020-09-04 15:24:04,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:24:04,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:04,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:24:04,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:24:04,937 INFO L87 Difference]: Start difference. First operand 259 states and 282 transitions. Second operand 4 states. [2020-09-04 15:24:05,598 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:24:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:06,601 INFO L93 Difference]: Finished difference Result 399 states and 451 transitions. [2020-09-04 15:24:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:24:06,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:24:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:06,607 INFO L225 Difference]: With dead ends: 399 [2020-09-04 15:24:06,608 INFO L226 Difference]: Without dead ends: 284 [2020-09-04 15:24:06,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:24:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-04 15:24:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-09-04 15:24:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 15:24:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-04 15:24:06,701 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 154 [2020-09-04 15:24:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:06,702 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-04 15:24:06,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:24:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-04 15:24:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:24:06,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:06,706 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 15:24:06,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:24:06,706 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:06,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1092236248, now seen corresponding path program 1 times [2020-09-04 15:24:06,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:06,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775760542] [2020-09-04 15:24:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:06,710 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,099 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:24:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:24:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:24:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:24:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:07,249 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 15:24:07,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775760542] [2020-09-04 15:24:07,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:07,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:24:07,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491920628] [2020-09-04 15:24:07,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:24:07,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:07,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:24:07,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:24:07,252 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 10 states. [2020-09-04 15:24:07,874 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:08,332 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:24:08,693 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:24:09,041 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:09,297 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:24:09,593 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:11,364 INFO L93 Difference]: Finished difference Result 445 states and 513 transitions. [2020-09-04 15:24:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:24:11,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:24:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:11,369 INFO L225 Difference]: With dead ends: 445 [2020-09-04 15:24:11,369 INFO L226 Difference]: Without dead ends: 306 [2020-09-04 15:24:11,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:24:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-04 15:24:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2020-09-04 15:24:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 15:24:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2020-09-04 15:24:11,439 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 167 [2020-09-04 15:24:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:11,440 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2020-09-04 15:24:11,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:24:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2020-09-04 15:24:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-04 15:24:11,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:11,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:24:11,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:24:11,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:11,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1656489563, now seen corresponding path program 1 times [2020-09-04 15:24:11,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:11,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237559479] [2020-09-04 15:24:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:11,448 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:11,890 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:11,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:24:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:24:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:24:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:24:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:24:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 15:24:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:24:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:12,097 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 15:24:12,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237559479] [2020-09-04 15:24:12,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:12,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:24:12,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200772975] [2020-09-04 15:24:12,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:24:12,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:24:12,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:24:12,101 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 10 states. [2020-09-04 15:24:12,639 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:14,909 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:15,314 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:24:15,626 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:15,925 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:24:16,220 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:16,723 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:17,091 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:17,752 INFO L93 Difference]: Finished difference Result 689 states and 848 transitions. [2020-09-04 15:24:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 15:24:17,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2020-09-04 15:24:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:17,758 INFO L225 Difference]: With dead ends: 689 [2020-09-04 15:24:17,759 INFO L226 Difference]: Without dead ends: 550 [2020-09-04 15:24:17,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-04 15:24:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-09-04 15:24:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 382. [2020-09-04 15:24:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-04 15:24:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 424 transitions. [2020-09-04 15:24:17,886 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 424 transitions. Word has length 180 [2020-09-04 15:24:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:17,887 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 424 transitions. [2020-09-04 15:24:17,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:24:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 424 transitions. [2020-09-04 15:24:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-04 15:24:17,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:17,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:24:17,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:24:17,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:17,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1039120385, now seen corresponding path program 1 times [2020-09-04 15:24:17,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:17,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414180438] [2020-09-04 15:24:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:17,895 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,251 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:24:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:24:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:24:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:24:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:24:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 15:24:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-04 15:24:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:24:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:18,432 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 15:24:18,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414180438] [2020-09-04 15:24:18,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:18,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:24:18,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669841302] [2020-09-04 15:24:18,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:24:18,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:18,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:24:18,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:24:18,435 INFO L87 Difference]: Start difference. First operand 382 states and 424 transitions. Second operand 7 states. [2020-09-04 15:24:18,993 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:19,884 INFO L93 Difference]: Finished difference Result 614 states and 718 transitions. [2020-09-04 15:24:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:24:19,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-04 15:24:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:19,887 INFO L225 Difference]: With dead ends: 614 [2020-09-04 15:24:19,888 INFO L226 Difference]: Without dead ends: 342 [2020-09-04 15:24:19,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:24:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-04 15:24:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 276. [2020-09-04 15:24:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-04 15:24:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 291 transitions. [2020-09-04 15:24:19,977 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 291 transitions. Word has length 185 [2020-09-04 15:24:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:19,978 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 291 transitions. [2020-09-04 15:24:19,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:24:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 291 transitions. [2020-09-04 15:24:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-04 15:24:19,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:19,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:24:19,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:24:19,980 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1994642045, now seen corresponding path program 1 times [2020-09-04 15:24:19,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:19,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406957059] [2020-09-04 15:24:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:19,983 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:24:20,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:24:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:24:20,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:24:20,342 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:24:20,342 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:24:20,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:24:20,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:24:20 BoogieIcfgContainer [2020-09-04 15:24:20,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:24:20,373 INFO L168 Benchmark]: Toolchain (without parser) took 20812.49 ms. Allocated memory was 139.5 MB in the beginning and 558.9 MB in the end (delta: 419.4 MB). Free memory was 102.6 MB in the beginning and 120.4 MB in the end (delta: -17.8 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:20,374 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:24:20,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.48 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 172.7 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:20,375 INFO L168 Benchmark]: Boogie Preprocessor took 95.09 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:20,376 INFO L168 Benchmark]: RCFGBuilder took 1222.07 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 168.6 MB in the beginning and 177.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:20,377 INFO L168 Benchmark]: TraceAbstraction took 18770.38 ms. Allocated memory was 237.5 MB in the beginning and 558.9 MB in the end (delta: 321.4 MB). Free memory was 177.3 MB in the beginning and 120.4 MB in the end (delta: 56.9 MB). Peak memory consumption was 378.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:20,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.48 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 172.7 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.09 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1222.07 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 168.6 MB in the beginning and 177.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18770.38 ms. Allocated memory was 237.5 MB in the beginning and 558.9 MB in the end (delta: 321.4 MB). Free memory was 177.3 MB in the beginning and 120.4 MB in the end (delta: 56.9 MB). Peak memory consumption was 378.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 883]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L136] int cleanupTimeShifts = 4; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L215] int retValue_acc ; [L216] int tmp ; [L220] FCALL select_helpers() [L221] FCALL select_features() [L222] CALL, EXPR valid_product() [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L222] RET, EXPR valid_product() [L222] tmp = valid_product() [L224] COND TRUE \read(tmp) [L226] FCALL setup() [L227] CALL runTest() [L206] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND TRUE \read(tmp___2) [L647] CALL startSystem() [L874] systemActive = 1 [L647] RET startSystem() [L660] CALL timeShift() [L683] COND FALSE !(\read(pumpRunning)) [L690] COND TRUE \read(systemActive) [L692] CALL processEnvironment() [L738] int tmp ; [L741] COND FALSE !(\read(pumpRunning)) [L756] CALL processEnvironment__wrappee__methaneQuery() [L712] int tmp ; [L715] COND FALSE !(\read(pumpRunning)) [L730] FCALL processEnvironment__wrappee__base() [L756] RET processEnvironment__wrappee__methaneQuery() [L692] RET processEnvironment() [L698] CALL __utac_acc__Specification3_spec__1() [L924] int tmp ; [L925] int tmp___0 ; [L926] int tmp___1 ; [L930] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L936] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L936] RET, EXPR getWaterLevel() [L936] tmp___0 = getWaterLevel() [L938] COND TRUE tmp___0 == 2 [L940] CALL, EXPR isPumpRunning() [L807] int retValue_acc ; [L810] retValue_acc = pumpRunning [L811] return (retValue_acc); [L940] RET, EXPR isPumpRunning() [L940] tmp___1 = isPumpRunning() [L942] COND FALSE !(\read(tmp___1)) [L946] CALL __automaton_fail() [L883] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 634 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1131 SDtfs, 2092 SDslu, 1392 SDs, 0 SdLazy, 2991 SolverSat, 684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred 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: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 368 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...