/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:01:19,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:01:19,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:01:19,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:01:19,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:01:19,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:01:19,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:01:19,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:01:19,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:01:19,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:01:19,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:01:19,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:01:19,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:01:19,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:01:19,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:01:19,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:01:19,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:01:19,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:01:20,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:01:20,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:01:20,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:01:20,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:01:20,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:01:20,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:01:20,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:01:20,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:01:20,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:01:20,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:01:20,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:01:20,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:01:20,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:01:20,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:01:20,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:01:20,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:01:20,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:01:20,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:01:20,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:01:20,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:01:20,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:01:20,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:01:20,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:01:20,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:01:20,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:01:20,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:01:20,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:01:20,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:01:20,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:01:20,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:01:20,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:01:20,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:01:20,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:01:20,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:01:20,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:01:20,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:01:20,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:01:20,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:01:20,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:01:20,076 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:01:20,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:01:20,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:01:20,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:01:20,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:01:20,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:01:20,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:01:20,077 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:01:20,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:01:20,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:01:20,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:01:20,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:01:20,487 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:01:20,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-11-07 00:01:20,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b744caacb/f144c49d2d9c47de8fff90f6ede92788/FLAG313817113 [2020-11-07 00:01:21,259 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:01:21,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-11-07 00:01:21,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b744caacb/f144c49d2d9c47de8fff90f6ede92788/FLAG313817113 [2020-11-07 00:01:21,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b744caacb/f144c49d2d9c47de8fff90f6ede92788 [2020-11-07 00:01:21,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:01:21,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:01:21,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:01:21,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:01:21,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:01:21,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:21" (1/1) ... [2020-11-07 00:01:21,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3781b660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:21, skipping insertion in model container [2020-11-07 00:01:21,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:21" (1/1) ... [2020-11-07 00:01:21,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:01:21,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:01:22,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:01:22,065 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:01:22,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:01:22,247 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:01:22,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22 WrapperNode [2020-11-07 00:01:22,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:01:22,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:01:22,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:01:22,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:01:22,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (1/1) ... [2020-11-07 00:01:22,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:01:22,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:01:22,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:01:22,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:01:22,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (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 [2020-11-07 00:01:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:01:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:01:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-07 00:01:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:01:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-07 00:01:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-07 00:01:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-07 00:01:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-07 00:01:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-07 00:01:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-07 00:01:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-07 00:01:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-07 00:01:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-07 00:01:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-07 00:01:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-07 00:01:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-07 00:01:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-07 00:01:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-07 00:01:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-07 00:01:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-07 00:01:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-07 00:01:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-07 00:01:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-07 00:01:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-07 00:01:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-07 00:01:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-07 00:01:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-07 00:01:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-07 00:01:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-07 00:01:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-07 00:01:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-07 00:01:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-07 00:01:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-07 00:01:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:01:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:01:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-07 00:01:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-07 00:01:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-07 00:01:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-07 00:01:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:01:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:01:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:01:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:01:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:01:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-07 00:01:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-07 00:01:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-07 00:01:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-07 00:01:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-07 00:01:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-07 00:01:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-07 00:01:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-07 00:01:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-07 00:01:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-07 00:01:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-07 00:01:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-07 00:01:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-07 00:01:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-07 00:01:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-07 00:01:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-07 00:01:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-07 00:01:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:01:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-07 00:01:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:01:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:01:22,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:01:23,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:01:23,890 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 00:01:23,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:23 BoogieIcfgContainer [2020-11-07 00:01:23,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:01:23,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:01:23,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:01:23,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:01:23,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:01:21" (1/3) ... [2020-11-07 00:01:23,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7176db00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:23, skipping insertion in model container [2020-11-07 00:01:23,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:22" (2/3) ... [2020-11-07 00:01:23,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7176db00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:23, skipping insertion in model container [2020-11-07 00:01:23,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:23" (3/3) ... [2020-11-07 00:01:23,902 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-11-07 00:01:23,917 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:01:23,921 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-07 00:01:23,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-07 00:01:23,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:01:23,958 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:01:23,958 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:01:23,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:01:23,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:01:23,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:01:23,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:01:23,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:01:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-11-07 00:01:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-07 00:01:24,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:24,005 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] [2020-11-07 00:01:24,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:24,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1593718141, now seen corresponding path program 1 times [2020-11-07 00:01:24,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:24,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605140781] [2020-11-07 00:01:24,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:24,100 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,809 WARN L194 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 00:01:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-07 00:01:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:25,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605140781] [2020-11-07 00:01:25,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:25,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:01:25,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624503212] [2020-11-07 00:01:25,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:01:25,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:25,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:01:25,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:01:25,027 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2020-11-07 00:01:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:26,916 INFO L93 Difference]: Finished difference Result 487 states and 581 transitions. [2020-11-07 00:01:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:01:26,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-11-07 00:01:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:26,936 INFO L225 Difference]: With dead ends: 487 [2020-11-07 00:01:26,936 INFO L226 Difference]: Without dead ends: 302 [2020-11-07 00:01:26,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:01:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-11-07 00:01:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2020-11-07 00:01:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-07 00:01:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 284 transitions. [2020-11-07 00:01:27,122 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 284 transitions. Word has length 159 [2020-11-07 00:01:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:27,123 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 284 transitions. [2020-11-07 00:01:27,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:01:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 284 transitions. [2020-11-07 00:01:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-07 00:01:27,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:27,129 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] [2020-11-07 00:01:27,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:01:27,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:27,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:27,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1753173193, now seen corresponding path program 1 times [2020-11-07 00:01:27,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:27,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731781778] [2020-11-07 00:01:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:27,136 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,704 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 00:01:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 00:01:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 00:01:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:27,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731781778] [2020-11-07 00:01:27,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:27,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:01:27,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301658745] [2020-11-07 00:01:27,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:01:27,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:01:27,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:01:27,815 INFO L87 Difference]: Start difference. First operand 261 states and 284 transitions. Second operand 4 states. [2020-11-07 00:01:28,717 WARN L194 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-07 00:01:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:29,977 INFO L93 Difference]: Finished difference Result 401 states and 452 transitions. [2020-11-07 00:01:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:01:29,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-11-07 00:01:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:29,983 INFO L225 Difference]: With dead ends: 401 [2020-11-07 00:01:29,983 INFO L226 Difference]: Without dead ends: 285 [2020-11-07 00:01:29,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:01:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-11-07 00:01:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-11-07 00:01:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-07 00:01:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-11-07 00:01:30,165 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 160 [2020-11-07 00:01:30,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:30,167 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-11-07 00:01:30,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:01:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-11-07 00:01:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-11-07 00:01:30,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:30,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:01:30,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:01:30,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:30,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1576076430, now seen corresponding path program 1 times [2020-11-07 00:01:30,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:30,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614170777] [2020-11-07 00:01:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:30,180 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,721 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:01:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-07 00:01:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-11-07 00:01:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:30,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614170777] [2020-11-07 00:01:30,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:30,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:01:30,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664686321] [2020-11-07 00:01:30,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:01:30,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:30,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:01:30,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:01:30,924 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 9 states. [2020-11-07 00:01:31,623 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:32,129 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-07 00:01:32,534 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-07 00:01:32,907 WARN L194 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:33,341 WARN L194 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:33,741 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:35,697 INFO L93 Difference]: Finished difference Result 421 states and 477 transitions. [2020-11-07 00:01:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:01:35,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-11-07 00:01:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:35,702 INFO L225 Difference]: With dead ends: 421 [2020-11-07 00:01:35,702 INFO L226 Difference]: Without dead ends: 285 [2020-11-07 00:01:35,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-07 00:01:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-11-07 00:01:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-11-07 00:01:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-07 00:01:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2020-11-07 00:01:35,811 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 169 [2020-11-07 00:01:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:35,814 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2020-11-07 00:01:35,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:01:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2020-11-07 00:01:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-11-07 00:01:35,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:35,818 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] [2020-11-07 00:01:35,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:01:35,819 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 244413631, now seen corresponding path program 1 times [2020-11-07 00:01:35,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:35,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762409414] [2020-11-07 00:01:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:35,827 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,376 WARN L194 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-07 00:01:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 00:01:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 00:01:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 00:01:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:36,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762409414] [2020-11-07 00:01:36,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:36,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:01:36,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338044998] [2020-11-07 00:01:36,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:01:36,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:36,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:01:36,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:01:36,587 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand 9 states. [2020-11-07 00:01:37,263 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:40,052 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:40,500 WARN L194 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:40,911 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:41,298 WARN L194 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:01:41,662 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:42,265 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:42,710 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:01:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:43,113 INFO L93 Difference]: Finished difference Result 593 states and 701 transitions. [2020-11-07 00:01:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 00:01:43,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-11-07 00:01:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:43,120 INFO L225 Difference]: With dead ends: 593 [2020-11-07 00:01:43,121 INFO L226 Difference]: Without dead ends: 457 [2020-11-07 00:01:43,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 00:01:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-07 00:01:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 380. [2020-11-07 00:01:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-11-07 00:01:43,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 422 transitions. [2020-11-07 00:01:43,315 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 422 transitions. Word has length 182 [2020-11-07 00:01:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:43,316 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 422 transitions. [2020-11-07 00:01:43,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:01:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 422 transitions. [2020-11-07 00:01:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-07 00:01:43,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:43,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:01:43,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:01:43,322 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:43,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1840000430, now seen corresponding path program 1 times [2020-11-07 00:01:43,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:43,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768206968] [2020-11-07 00:01:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:43,333 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,767 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:01:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:01:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:01:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:01:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:01:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:01:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 00:01:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 00:01:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:01:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-07 00:01:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-11-07 00:01:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-11-07 00:01:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:01:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:01:43,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768206968] [2020-11-07 00:01:43,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:01:43,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:01:43,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369600661] [2020-11-07 00:01:43,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:01:43,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:01:43,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:01:43,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:01:43,912 INFO L87 Difference]: Start difference. First operand 380 states and 422 transitions. Second operand 6 states. [2020-11-07 00:01:44,563 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:01:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:01:45,391 INFO L93 Difference]: Finished difference Result 560 states and 642 transitions. [2020-11-07 00:01:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 00:01:45,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-11-07 00:01:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:01:45,394 INFO L225 Difference]: With dead ends: 560 [2020-11-07 00:01:45,394 INFO L226 Difference]: Without dead ends: 295 [2020-11-07 00:01:45,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:01:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-07 00:01:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 274. [2020-11-07 00:01:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-11-07 00:01:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 289 transitions. [2020-11-07 00:01:45,504 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 289 transitions. Word has length 187 [2020-11-07 00:01:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:01:45,505 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 289 transitions. [2020-11-07 00:01:45,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:01:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 289 transitions. [2020-11-07 00:01:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-07 00:01:45,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:01:45,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:01:45,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:01:45,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:01:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:01:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash -758881306, now seen corresponding path program 1 times [2020-11-07 00:01:45,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:01:45,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397808990] [2020-11-07 00:01:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:01:45,513 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:01:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:01:45,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:01:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:01:45,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:01:45,920 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:01:45,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:01:45,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:01:45,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:01:45 BoogieIcfgContainer [2020-11-07 00:01:45,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:01:45,953 INFO L168 Benchmark]: Toolchain (without parser) took 24384.33 ms. Allocated memory was 161.5 MB in the beginning and 461.4 MB in the end (delta: 299.9 MB). Free memory was 136.5 MB in the beginning and 179.0 MB in the end (delta: -42.5 MB). Peak memory consumption was 258.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:45,954 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory was 134.8 MB in the beginning and 134.7 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:01:45,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.56 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 115.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:45,956 INFO L168 Benchmark]: Boogie Preprocessor took 103.98 ms. Allocated memory is still 161.5 MB. Free memory was 115.3 MB in the beginning and 111.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:45,957 INFO L168 Benchmark]: RCFGBuilder took 1537.69 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 111.4 MB in the beginning and 129.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:45,958 INFO L168 Benchmark]: TraceAbstraction took 22055.12 ms. Allocated memory was 194.0 MB in the beginning and 461.4 MB in the end (delta: 267.4 MB). Free memory was 129.9 MB in the beginning and 179.0 MB in the end (delta: -49.0 MB). Peak memory consumption was 218.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:01:45,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory was 134.8 MB in the beginning and 134.7 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.56 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 115.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.98 ms. Allocated memory is still 161.5 MB. Free memory was 115.3 MB in the beginning and 111.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1537.69 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 111.4 MB in the beginning and 129.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22055.12 ms. Allocated memory was 194.0 MB in the beginning and 461.4 MB in the end (delta: 267.4 MB). Free memory was 129.9 MB in the beginning and 179.0 MB in the end (delta: -49.0 MB). Peak memory consumption was 218.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L417] int pumpRunning = 0; [L418] int systemActive = 1; [L674] int waterLevel = 1; [L675] int methaneLevelCritical = 0; [L763] int cleanupTimeShifts = 4; [L839] int retValue_acc ; [L840] int tmp ; [L844] FCALL select_helpers() [L845] FCALL select_features() [L846] CALL, EXPR valid_product() [L922] int retValue_acc ; [L925] retValue_acc = 1 [L926] return (retValue_acc); [L846] RET, EXPR valid_product() [L846] tmp = valid_product() [L848] COND TRUE \read(tmp) [L850] FCALL setup() [L851] CALL runTest() [L830] CALL test() [L609] int splverifierCounter ; [L610] int tmp ; [L611] int tmp___0 ; [L612] int tmp___1 ; [L613] int tmp___2 ; [L616] splverifierCounter = 0 [L618] COND TRUE 1 [L620] COND TRUE splverifierCounter < 4 [L626] tmp = __VERIFIER_nondet_int() [L628] COND TRUE \read(tmp) [L630] CALL waterRise() [L692] COND TRUE waterLevel < 2 [L693] waterLevel = waterLevel + 1 [L630] RET waterRise() [L636] tmp___0 = __VERIFIER_nondet_int() [L638] COND FALSE !(\read(tmp___0)) [L646] tmp___2 = __VERIFIER_nondet_int() [L648] COND TRUE \read(tmp___2) [L661] CALL timeShift() [L425] COND FALSE !(\read(pumpRunning)) [L432] COND TRUE \read(systemActive) [L434] CALL processEnvironment() [L480] int tmp ; [L483] COND FALSE !(\read(pumpRunning)) [L498] CALL processEnvironment__wrappee__lowWaterSensor() [L454] int tmp ; [L457] COND FALSE !(\read(pumpRunning)) [L472] FCALL processEnvironment__wrappee__base() [L498] RET processEnvironment__wrappee__lowWaterSensor() [L434] RET processEnvironment() [L440] CALL __utac_acc__Specification3_spec__1() [L863] int tmp ; [L864] int tmp___0 ; [L865] int tmp___1 ; [L869] CALL, EXPR isMethaneLevelCritical() [L713] int retValue_acc ; [L716] retValue_acc = methaneLevelCritical [L717] return (retValue_acc); [L869] RET, EXPR isMethaneLevelCritical() [L869] tmp = isMethaneLevelCritical() [L871] COND FALSE !(\read(tmp)) [L875] CALL, EXPR getWaterLevel() [L745] int retValue_acc ; [L748] retValue_acc = waterLevel [L749] return (retValue_acc); [L875] RET, EXPR getWaterLevel() [L875] tmp___0 = getWaterLevel() [L877] COND TRUE tmp___0 == 2 [L879] CALL, EXPR isPumpRunning() [L532] int retValue_acc ; [L535] retValue_acc = pumpRunning [L536] return (retValue_acc); [L879] RET, EXPR isPumpRunning() [L879] tmp___1 = isPumpRunning() [L881] COND FALSE !(\read(tmp___1)) [L885] CALL __automaton_fail() [L600] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product21.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 634 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1140 SDtfs, 1574 SDslu, 1303 SDs, 0 SdLazy, 2736 SolverSat, 481 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred 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, 207 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...