/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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:04:43,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:04:43,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:04:43,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:04:43,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:04:43,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:04:43,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:04:43,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:04:43,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:04:43,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:04:43,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:04:43,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:04:43,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:04:43,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:04:43,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:04:43,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:04:43,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:04:43,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:04:43,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:04:43,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:04:43,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:04:43,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:04:43,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:04:43,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:04:43,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:04:43,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:04:43,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:04:43,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:04:43,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:04:43,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:04:43,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:04:43,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:04:43,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:04:43,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:04:43,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:04:43,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:04:43,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:04:43,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:04:43,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:04:43,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:04:43,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:04:43,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:04:43,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:04:43,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:04:43,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:04:43,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:04:43,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:04:43,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:04:43,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:04:43,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:04:43,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:04:43,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:04:43,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:04:43,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:04:43,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:04:43,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:04:43,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:04:43,430 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:04:43,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:04:43,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:04:43,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:43,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:04:43,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:04:43,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:04:43,432 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:04:43,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:04:43,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:04:43,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:04:43,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:04:43,726 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:04:43,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-08-22 18:04:43,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f434c5f91/250c4ba3a3c14dd8aef9be0b32ba8a9d/FLAG3a0a57293 [2020-08-22 18:04:44,322 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:04:44,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-08-22 18:04:44,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f434c5f91/250c4ba3a3c14dd8aef9be0b32ba8a9d/FLAG3a0a57293 [2020-08-22 18:04:44,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f434c5f91/250c4ba3a3c14dd8aef9be0b32ba8a9d [2020-08-22 18:04:44,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:04:44,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:04:44,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:44,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:04:44,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:04:44,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:44" (1/1) ... [2020-08-22 18:04:44,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e79316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:44, skipping insertion in model container [2020-08-22 18:04:44,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:44" (1/1) ... [2020-08-22 18:04:44,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:04:44,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:04:45,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:45,225 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:04:45,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:45,353 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:04:45,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45 WrapperNode [2020-08-22 18:04:45,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:45,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:04:45,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:04:45,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:04:45,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... [2020-08-22 18:04:45,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:04:45,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:04:45,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:04:45,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:04:45,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:04:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:04:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:04:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:04:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:04:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:04:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:04:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 18:04:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:04:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:04:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:04:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:04:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:04:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:04:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:04:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:04:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:04:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:04:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:04:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 18:04:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:04:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:04:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:04:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:04:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:04:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:04:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:04:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:04:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 18:04:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:04:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:04:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:04:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:04:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:04:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:04:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:04:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:04:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:04:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:04:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:04:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:04:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:04:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:04:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:04:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:04:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:04:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:04:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:04:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:04:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:04:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:04:46,577 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:04:46,577 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:04:46,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:46 BoogieIcfgContainer [2020-08-22 18:04:46,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:04:46,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:04:46,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:04:46,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:04:46,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:04:44" (1/3) ... [2020-08-22 18:04:46,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cef2f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:46, skipping insertion in model container [2020-08-22 18:04:46,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:45" (2/3) ... [2020-08-22 18:04:46,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cef2f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:46, skipping insertion in model container [2020-08-22 18:04:46,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:46" (3/3) ... [2020-08-22 18:04:46,592 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2020-08-22 18:04:46,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:04:46,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:04:46,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:04:46,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:04:46,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:04:46,641 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:04:46,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:04:46,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:04:46,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:04:46,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:04:46,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:04:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-08-22 18:04:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:04:46,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:46,686 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] [2020-08-22 18:04:46,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1912594641, now seen corresponding path program 1 times [2020-08-22 18:04:46,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:46,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940228131] [2020-08-22 18:04:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:46,753 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,445 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:04:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:47,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940228131] [2020-08-22 18:04:47,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:47,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:04:47,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035330738] [2020-08-22 18:04:47,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:04:47,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:47,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:04:47,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:47,700 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2020-08-22 18:04:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:49,118 INFO L93 Difference]: Finished difference Result 500 states and 599 transitions. [2020-08-22 18:04:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:04:49,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:04:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:49,138 INFO L225 Difference]: With dead ends: 500 [2020-08-22 18:04:49,138 INFO L226 Difference]: Without dead ends: 309 [2020-08-22 18:04:49,143 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 [2020-08-22 18:04:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-22 18:04:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-08-22 18:04:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 18:04:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 290 transitions. [2020-08-22 18:04:49,281 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 290 transitions. Word has length 153 [2020-08-22 18:04:49,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:49,282 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 290 transitions. [2020-08-22 18:04:49,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:04:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 290 transitions. [2020-08-22 18:04:49,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:04:49,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:49,288 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] [2020-08-22 18:04:49,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:04:49,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:49,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:49,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1080326154, now seen corresponding path program 1 times [2020-08-22 18:04:49,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:49,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772862464] [2020-08-22 18:04:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:49,294 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,659 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:04:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:04:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:49,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772862464] [2020-08-22 18:04:49,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:49,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:04:49,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170553691] [2020-08-22 18:04:49,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:04:49,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:49,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:04:49,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:04:49,738 INFO L87 Difference]: Start difference. First operand 265 states and 290 transitions. Second operand 4 states. [2020-08-22 18:04:50,331 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:51,304 INFO L93 Difference]: Finished difference Result 407 states and 462 transitions. [2020-08-22 18:04:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:04:51,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:04:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:51,310 INFO L225 Difference]: With dead ends: 407 [2020-08-22 18:04:51,311 INFO L226 Difference]: Without dead ends: 292 [2020-08-22 18:04:51,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:04:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-22 18:04:51,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-08-22 18:04:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 18:04:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2020-08-22 18:04:51,409 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 154 [2020-08-22 18:04:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:51,410 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2020-08-22 18:04:51,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:04:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2020-08-22 18:04:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 18:04:51,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:51,413 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] [2020-08-22 18:04:51,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:04:51,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:51,414 INFO L82 PathProgramCache]: Analyzing trace with hash 240826418, now seen corresponding path program 1 times [2020-08-22 18:04:51,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:51,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433148338] [2020-08-22 18:04:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:51,417 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,692 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:04:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:04:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:04:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:04:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:51,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433148338] [2020-08-22 18:04:51,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:51,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:04:51,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077515689] [2020-08-22 18:04:51,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:04:51,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:51,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:04:51,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:04:51,934 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 10 states. [2020-08-22 18:04:52,388 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:52,682 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:04:52,948 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:04:53,210 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:53,438 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:53,674 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:54,577 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:57,112 INFO L93 Difference]: Finished difference Result 711 states and 833 transitions. [2020-08-22 18:04:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:04:57,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 18:04:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:57,125 INFO L225 Difference]: With dead ends: 711 [2020-08-22 18:04:57,126 INFO L226 Difference]: Without dead ends: 566 [2020-08-22 18:04:57,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:04:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-22 18:04:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 471. [2020-08-22 18:04:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-22 18:04:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 530 transitions. [2020-08-22 18:04:57,332 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 530 transitions. Word has length 167 [2020-08-22 18:04:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:57,333 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 530 transitions. [2020-08-22 18:04:57,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:04:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 530 transitions. [2020-08-22 18:04:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 18:04:57,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:57,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:57,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:04:57,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:57,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1420890141, now seen corresponding path program 1 times [2020-08-22 18:04:57,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:57,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158565035] [2020-08-22 18:04:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:57,341 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,666 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:04:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:04:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 18:04:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 18:04:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:57,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158565035] [2020-08-22 18:04:57,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:57,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:57,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427353471] [2020-08-22 18:04:57,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:57,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:57,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:57,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:57,905 INFO L87 Difference]: Start difference. First operand 471 states and 530 transitions. Second operand 9 states. [2020-08-22 18:04:58,541 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:00,482 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:00,758 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:01,046 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:01,371 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:01,630 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:01,861 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:02,097 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:02,969 INFO L93 Difference]: Finished difference Result 1279 states and 1543 transitions. [2020-08-22 18:05:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:05:02,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-08-22 18:05:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:02,977 INFO L225 Difference]: With dead ends: 1279 [2020-08-22 18:05:02,977 INFO L226 Difference]: Without dead ends: 918 [2020-08-22 18:05:02,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:05:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-08-22 18:05:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 815. [2020-08-22 18:05:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-08-22 18:05:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 943 transitions. [2020-08-22 18:05:03,219 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 943 transitions. Word has length 172 [2020-08-22 18:05:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:03,219 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 943 transitions. [2020-08-22 18:05:03,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:05:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 943 transitions. [2020-08-22 18:05:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:05:03,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:03,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:05:03,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:05:03,225 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1510310544, now seen corresponding path program 1 times [2020-08-22 18:05:03,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:03,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991796526] [2020-08-22 18:05:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:03,228 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,490 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:05:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:05:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:05:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:05:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 18:05:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:03,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991796526] [2020-08-22 18:05:03,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:03,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:05:03,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66548760] [2020-08-22 18:05:03,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:05:03,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:03,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:05:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:05:03,692 INFO L87 Difference]: Start difference. First operand 815 states and 943 transitions. Second operand 6 states. [2020-08-22 18:05:04,155 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:05,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:05,096 INFO L93 Difference]: Finished difference Result 1352 states and 1625 transitions. [2020-08-22 18:05:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:05:05,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-08-22 18:05:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:05,110 INFO L225 Difference]: With dead ends: 1352 [2020-08-22 18:05:05,110 INFO L226 Difference]: Without dead ends: 647 [2020-08-22 18:05:05,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:05:05,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-08-22 18:05:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 570. [2020-08-22 18:05:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-08-22 18:05:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 621 transitions. [2020-08-22 18:05:05,388 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 621 transitions. Word has length 177 [2020-08-22 18:05:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:05,389 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 621 transitions. [2020-08-22 18:05:05,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:05:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 621 transitions. [2020-08-22 18:05:05,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:05:05,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:05,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:05:05,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:05:05,393 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:05,393 INFO L82 PathProgramCache]: Analyzing trace with hash -557067660, now seen corresponding path program 1 times [2020-08-22 18:05:05,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:05,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494965836] [2020-08-22 18:05:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:05,397 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:05,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:05,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:05,752 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:05:05,752 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:05:05,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:05:05,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:05:05 BoogieIcfgContainer [2020-08-22 18:05:05,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:05:05,778 INFO L168 Benchmark]: Toolchain (without parser) took 21072.51 ms. Allocated memory was 139.5 MB in the beginning and 649.1 MB in the end (delta: 509.6 MB). Free memory was 100.9 MB in the beginning and 462.3 MB in the end (delta: -361.4 MB). Peak memory consumption was 148.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,779 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.59 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: -71.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,781 INFO L168 Benchmark]: Boogie Preprocessor took 85.91 ms. Allocated memory is still 203.9 MB. Free memory was 172.0 MB in the beginning and 167.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,781 INFO L168 Benchmark]: RCFGBuilder took 1144.21 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.4 MB in the beginning and 176.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,782 INFO L168 Benchmark]: TraceAbstraction took 19190.82 ms. Allocated memory was 237.5 MB in the beginning and 649.1 MB in the end (delta: 411.6 MB). Free memory was 176.6 MB in the beginning and 462.3 MB in the end (delta: -285.7 MB). Peak memory consumption was 125.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.59 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: -71.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.91 ms. Allocated memory is still 203.9 MB. Free memory was 172.0 MB in the beginning and 167.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1144.21 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.4 MB in the beginning and 176.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19190.82 ms. Allocated memory was 237.5 MB in the beginning and 649.1 MB in the end (delta: 411.6 MB). Free memory was 176.6 MB in the beginning and 462.3 MB in the end (delta: -285.7 MB). Peak memory consumption was 125.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L369] int cleanupTimeShifts = 4; [L637] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L445] int retValue_acc ; [L446] int tmp ; [L450] FCALL select_helpers() [L451] FCALL select_features() [L452] CALL, EXPR valid_product() [L949] int retValue_acc ; [L952] retValue_acc = 1 [L953] return (retValue_acc); [L452] RET, EXPR valid_product() [L452] tmp = valid_product() [L454] COND TRUE \read(tmp) [L456] FCALL setup() [L457] CALL runTest() [L436] CALL test() [L266] int splverifierCounter ; [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L270] int tmp___2 ; [L273] splverifierCounter = 0 [L275] COND TRUE 1 [L277] COND TRUE splverifierCounter < 4 [L283] tmp = __VERIFIER_nondet_int() [L285] COND TRUE \read(tmp) [L287] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L287] RET waterRise() [L293] tmp___0 = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp___0)) [L303] tmp___2 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___2)) [L311] tmp___1 = __VERIFIER_nondet_int() [L313] COND TRUE \read(tmp___1) [L315] CALL stopSystem() [L242] COND FALSE !(\read(pumpRunning)) [L249] systemActive = 0 [L315] RET stopSystem() [L322] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND FALSE !(\read(systemActive)) [L83] CALL __utac_acc__Specification3_spec__1() [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L342] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L342] RET, EXPR isMethaneLevelCritical() [L342] tmp = isMethaneLevelCritical() [L344] COND FALSE !(\read(tmp)) [L348] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L348] RET, EXPR getWaterLevel() [L348] tmp___0 = getWaterLevel() [L350] COND TRUE tmp___0 == 2 [L352] CALL, EXPR isPumpRunning() [L175] int retValue_acc ; [L178] retValue_acc = pumpRunning [L179] return (retValue_acc); [L352] RET, EXPR isPumpRunning() [L352] tmp___1 = isPumpRunning() [L354] COND FALSE !(\read(tmp___1)) [L358] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1215 SDtfs, 1938 SDslu, 1576 SDs, 0 SdLazy, 3481 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=815occurred 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: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 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...