/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_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:47:07,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:47:07,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:47:07,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:47:07,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:47:07,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:47:07,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:47:07,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:47:07,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:47:07,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:47:07,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:47:07,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:47:07,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:47:07,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:47:07,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:47:07,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:47:07,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:47:07,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:47:07,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:47:07,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:47:07,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:47:07,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:47:07,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:47:07,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:47:07,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:47:07,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:47:07,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:47:07,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:47:07,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:47:07,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:47:07,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:47:07,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:47:07,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:47:07,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:47:07,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:47:07,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:47:07,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:47:07,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:47:07,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:47:07,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:47:07,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:47:07,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:47:07,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:47:07,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:47:07,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:47:07,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:47:07,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:47:07,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:47:07,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:47:07,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:47:07,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:47:07,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:47:07,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:47:07,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:47:07,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:47:07,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:47:07,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:47:07,137 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:47:07,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:47:07,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:47:07,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:47:07,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:47:07,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:47:07,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:47:07,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:47:07,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:47:07,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:47:07,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:47:07,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:47:07,547 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:47:07,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-11-06 23:47:07,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794d2e57b/0c4b8fcfa11d49c5a605a029cb2682f2/FLAG72396b4fc [2020-11-06 23:47:08,311 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:47:08,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-11-06 23:47:08,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794d2e57b/0c4b8fcfa11d49c5a605a029cb2682f2/FLAG72396b4fc [2020-11-06 23:47:08,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794d2e57b/0c4b8fcfa11d49c5a605a029cb2682f2 [2020-11-06 23:47:08,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:47:08,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:47:08,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:47:08,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:47:08,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:47:08,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:47:08" (1/1) ... [2020-11-06 23:47:08,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5915986f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:08, skipping insertion in model container [2020-11-06 23:47:08,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:47:08" (1/1) ... [2020-11-06 23:47:08,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:47:08,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:47:09,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:47:09,076 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:47:09,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:47:09,286 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:47:09,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09 WrapperNode [2020-11-06 23:47:09,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:47:09,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:47:09,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:47:09,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:47:09,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (1/1) ... [2020-11-06 23:47:09,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:47:09,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:47:09,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:47:09,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:47:09,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (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 [2020-11-06 23:47:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:47:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:47:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:47:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:47:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:47:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:47:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:47:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:47:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:47:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:47:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:47:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:47:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-06 23:47:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:47:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:47:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:47:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:47:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:47:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:47:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:47:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-06 23:47:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-11-06 23:47:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:47:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:47:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:47:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:47:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:47:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:47:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:47:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-06 23:47:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:47:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:47:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:47:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:47:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:47:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:47:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:47:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:47:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:47:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:47:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:47:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:47:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:47:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:47:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:47:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:47:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:47:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:47:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:47:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:47:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:47:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:47:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:47:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:47:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:47:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-11-06 23:47:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:47:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:47:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:47:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:47:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:47:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:47:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:47:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-06 23:47:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:47:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:47:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:47:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:47:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:47:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:47:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:47:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:47:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:47:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-06 23:47:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-06 23:47:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:47:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:47:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:47:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:47:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:47:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:47:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:47:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:47:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:47:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:47:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:47:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:47:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:47:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:47:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:47:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:47:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:47:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:47:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:47:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:47:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:47:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:47:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:47:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:47:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:47:10,841 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:47:10,842 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:47:10,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:47:10 BoogieIcfgContainer [2020-11-06 23:47:10,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:47:10,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:47:10,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:47:10,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:47:10,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:47:08" (1/3) ... [2020-11-06 23:47:10,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d2fa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:47:10, skipping insertion in model container [2020-11-06 23:47:10,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:47:09" (2/3) ... [2020-11-06 23:47:10,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d2fa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:47:10, skipping insertion in model container [2020-11-06 23:47:10,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:47:10" (3/3) ... [2020-11-06 23:47:10,854 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-11-06 23:47:10,871 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:47:10,875 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:47:10,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:47:10,914 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:47:10,914 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:47:10,914 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:47:10,915 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:47:10,915 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:47:10,915 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:47:10,915 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:47:10,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:47:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-11-06 23:47:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:47:10,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:10,964 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] [2020-11-06 23:47:10,964 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]=== [2020-11-06 23:47:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1293318628, now seen corresponding path program 1 times [2020-11-06 23:47:10,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:10,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150075542] [2020-11-06 23:47:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:11,061 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,881 WARN L194 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:47:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:12,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150075542] [2020-11-06 23:47:12,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:12,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:47:12,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103126287] [2020-11-06 23:47:12,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:47:12,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:12,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:47:12,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:47:12,061 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 3 states. [2020-11-06 23:47:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:13,910 INFO L93 Difference]: Finished difference Result 555 states and 663 transitions. [2020-11-06 23:47:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:47:13,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:47:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:13,931 INFO L225 Difference]: With dead ends: 555 [2020-11-06 23:47:13,931 INFO L226 Difference]: Without dead ends: 338 [2020-11-06 23:47:13,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:47:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-11-06 23:47:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 293. [2020-11-06 23:47:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-11-06 23:47:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2020-11-06 23:47:14,177 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2020-11-06 23:47:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:14,181 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2020-11-06 23:47:14,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:47:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2020-11-06 23:47:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:47:14,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:14,195 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] [2020-11-06 23:47:14,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:47:14,196 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]=== [2020-11-06 23:47:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash -530215176, now seen corresponding path program 1 times [2020-11-06 23:47:14,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:14,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96720204] [2020-11-06 23:47:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:14,207 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,590 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:47:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:47:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:14,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96720204] [2020-11-06 23:47:14,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:14,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:47:14,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451307164] [2020-11-06 23:47:14,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:47:14,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:14,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:47:14,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:47:14,696 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 4 states. [2020-11-06 23:47:15,425 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:16,812 INFO L93 Difference]: Finished difference Result 463 states and 526 transitions. [2020-11-06 23:47:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:47:16,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:47:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:16,822 INFO L225 Difference]: With dead ends: 463 [2020-11-06 23:47:16,822 INFO L226 Difference]: Without dead ends: 321 [2020-11-06 23:47:16,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:47:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-06 23:47:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 283. [2020-11-06 23:47:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-11-06 23:47:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 309 transitions. [2020-11-06 23:47:16,945 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 309 transitions. Word has length 149 [2020-11-06 23:47:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:16,946 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 309 transitions. [2020-11-06 23:47:16,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:47:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 309 transitions. [2020-11-06 23:47:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-06 23:47:16,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:16,949 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] [2020-11-06 23:47:16,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:47:16,950 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]=== [2020-11-06 23:47:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1179588164, now seen corresponding path program 1 times [2020-11-06 23:47:16,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:16,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392103444] [2020-11-06 23:47:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:16,955 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,384 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:47:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-06 23:47:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392103444] [2020-11-06 23:47:17,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:17,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:47:17,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59418216] [2020-11-06 23:47:17,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:47:17,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:47:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:47:17,611 INFO L87 Difference]: Start difference. First operand 283 states and 309 transitions. Second operand 9 states. [2020-11-06 23:47:18,280 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:18,647 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:18,972 WARN L194 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:19,242 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:19,597 WARN L194 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:19,917 WARN L194 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:20,968 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:23,912 INFO L93 Difference]: Finished difference Result 755 states and 875 transitions. [2020-11-06 23:47:23,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:47:23,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-11-06 23:47:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:23,923 INFO L225 Difference]: With dead ends: 755 [2020-11-06 23:47:23,923 INFO L226 Difference]: Without dead ends: 587 [2020-11-06 23:47:23,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-06 23:47:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-11-06 23:47:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 514. [2020-11-06 23:47:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-11-06 23:47:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 580 transitions. [2020-11-06 23:47:24,204 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 580 transitions. Word has length 158 [2020-11-06 23:47:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:24,206 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 580 transitions. [2020-11-06 23:47:24,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:47:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 580 transitions. [2020-11-06 23:47:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-06 23:47:24,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:24,212 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] [2020-11-06 23:47:24,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:47:24,212 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]=== [2020-11-06 23:47:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:24,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1825181719, now seen corresponding path program 1 times [2020-11-06 23:47:24,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:24,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799624715] [2020-11-06 23:47:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:24,223 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,616 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-06 23:47:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-11-06 23:47:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-06 23:47:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:24,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799624715] [2020-11-06 23:47:24,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:24,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:47:24,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876040302] [2020-11-06 23:47:24,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:47:24,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:24,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:47:24,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:47:24,761 INFO L87 Difference]: Start difference. First operand 514 states and 580 transitions. Second operand 9 states. [2020-11-06 23:47:25,284 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:26,507 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:26,857 WARN L194 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:27,338 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:27,666 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:28,330 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:28,721 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:29,086 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:29,701 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:31,109 INFO L93 Difference]: Finished difference Result 1434 states and 1723 transitions. [2020-11-06 23:47:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:47:31,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-11-06 23:47:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:31,127 INFO L225 Difference]: With dead ends: 1434 [2020-11-06 23:47:31,128 INFO L226 Difference]: Without dead ends: 1035 [2020-11-06 23:47:31,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:47:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-11-06 23:47:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 873. [2020-11-06 23:47:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-11-06 23:47:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1000 transitions. [2020-11-06 23:47:31,626 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1000 transitions. Word has length 167 [2020-11-06 23:47:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:31,626 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1000 transitions. [2020-11-06 23:47:31,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:47:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1000 transitions. [2020-11-06 23:47:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-06 23:47:31,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:31,631 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] [2020-11-06 23:47:31,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:47:31,632 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]=== [2020-11-06 23:47:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1691769281, now seen corresponding path program 1 times [2020-11-06 23:47:31,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:31,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595055183] [2020-11-06 23:47:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:31,636 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:31,963 WARN L194 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-11-06 23:47:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:47:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-06 23:47:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:32,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595055183] [2020-11-06 23:47:32,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:32,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:47:32,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343086122] [2020-11-06 23:47:32,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:47:32,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:32,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:47:32,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:47:32,206 INFO L87 Difference]: Start difference. First operand 873 states and 1000 transitions. Second operand 10 states. [2020-11-06 23:47:32,838 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:34,237 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:34,549 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:34,847 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:35,161 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:35,479 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:36,278 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:36,586 WARN L194 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:37,003 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:38,659 INFO L93 Difference]: Finished difference Result 2227 states and 2752 transitions. [2020-11-06 23:47:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:47:38,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-11-06 23:47:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:38,671 INFO L225 Difference]: With dead ends: 2227 [2020-11-06 23:47:38,671 INFO L226 Difference]: Without dead ends: 1469 [2020-11-06 23:47:38,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:47:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2020-11-06 23:47:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1207. [2020-11-06 23:47:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-11-06 23:47:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1399 transitions. [2020-11-06 23:47:39,371 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1399 transitions. Word has length 172 [2020-11-06 23:47:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:39,372 INFO L481 AbstractCegarLoop]: Abstraction has 1207 states and 1399 transitions. [2020-11-06 23:47:39,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1399 transitions. [2020-11-06 23:47:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:39,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:39,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:39,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:47:39,378 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]=== [2020-11-06 23:47:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash 938823713, now seen corresponding path program 1 times [2020-11-06 23:47:39,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:39,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994430918] [2020-11-06 23:47:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:39,382 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,674 WARN L194 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:47:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:47:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:39,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994430918] [2020-11-06 23:47:39,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:39,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:47:39,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939083703] [2020-11-06 23:47:39,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:47:39,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:39,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:47:39,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:47:39,892 INFO L87 Difference]: Start difference. First operand 1207 states and 1399 transitions. Second operand 10 states. [2020-11-06 23:47:41,278 WARN L194 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:41,563 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:41,903 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:47:42,211 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:42,513 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:42,752 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:44,409 INFO L93 Difference]: Finished difference Result 2703 states and 3313 transitions. [2020-11-06 23:47:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:47:44,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-11-06 23:47:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:44,422 INFO L225 Difference]: With dead ends: 2703 [2020-11-06 23:47:44,422 INFO L226 Difference]: Without dead ends: 1611 [2020-11-06 23:47:44,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:47:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-11-06 23:47:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1245. [2020-11-06 23:47:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-11-06 23:47:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1439 transitions. [2020-11-06 23:47:45,003 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1439 transitions. Word has length 206 [2020-11-06 23:47:45,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:45,004 INFO L481 AbstractCegarLoop]: Abstraction has 1245 states and 1439 transitions. [2020-11-06 23:47:45,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:45,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1439 transitions. [2020-11-06 23:47:45,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:45,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:45,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:45,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:47:45,010 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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]=== [2020-11-06 23:47:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash 876494977, now seen corresponding path program 1 times [2020-11-06 23:47:45,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:45,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650723967] [2020-11-06 23:47:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:45,015 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,332 WARN L194 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:47:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:47:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:45,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650723967] [2020-11-06 23:47:45,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:45,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-06 23:47:45,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704830127] [2020-11-06 23:47:45,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 23:47:45,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:45,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 23:47:45,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-06 23:47:45,586 INFO L87 Difference]: Start difference. First operand 1245 states and 1439 transitions. Second operand 13 states. [2020-11-06 23:47:46,267 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:46,555 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:46,854 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:47,136 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:47,419 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:48,399 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:48,684 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:49,005 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:49,325 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:49,620 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:51,689 INFO L93 Difference]: Finished difference Result 2785 states and 3460 transitions. [2020-11-06 23:47:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:51,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-11-06 23:47:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:51,701 INFO L225 Difference]: With dead ends: 2785 [2020-11-06 23:47:51,701 INFO L226 Difference]: Without dead ends: 1655 [2020-11-06 23:47:51,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-11-06 23:47:51,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-11-06 23:47:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1269. [2020-11-06 23:47:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-11-06 23:47:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1463 transitions. [2020-11-06 23:47:52,281 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1463 transitions. Word has length 206 [2020-11-06 23:47:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:52,284 INFO L481 AbstractCegarLoop]: Abstraction has 1269 states and 1463 transitions. [2020-11-06 23:47:52,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 23:47:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1463 transitions. [2020-11-06 23:47:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:52,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:52,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:52,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:47:52,291 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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]=== [2020-11-06 23:47:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1278566402, now seen corresponding path program 1 times [2020-11-06 23:47:52,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:52,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549340080] [2020-11-06 23:47:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:52,295 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,638 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:47:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:47:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:52,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549340080] [2020-11-06 23:47:52,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:52,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:47:52,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245981271] [2020-11-06 23:47:52,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:47:52,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:47:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:47:52,845 INFO L87 Difference]: Start difference. First operand 1269 states and 1463 transitions. Second operand 7 states. [2020-11-06 23:47:53,391 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:54,028 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:57,874 INFO L93 Difference]: Finished difference Result 4124 states and 5143 transitions. [2020-11-06 23:47:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:57,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-11-06 23:47:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:57,892 INFO L225 Difference]: With dead ends: 4124 [2020-11-06 23:47:57,892 INFO L226 Difference]: Without dead ends: 2970 [2020-11-06 23:47:57,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-11-06 23:47:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-11-06 23:47:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2465. [2020-11-06 23:47:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-11-06 23:47:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 2871 transitions. [2020-11-06 23:47:59,271 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 2871 transitions. Word has length 206 [2020-11-06 23:47:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:59,272 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 2871 transitions. [2020-11-06 23:47:59,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:47:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 2871 transitions. [2020-11-06 23:47:59,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-11-06 23:47:59,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:59,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:59,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:47:59,278 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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]=== [2020-11-06 23:47:59,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:59,279 INFO L82 PathProgramCache]: Analyzing trace with hash -582347972, now seen corresponding path program 1 times [2020-11-06 23:47:59,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:59,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107784643] [2020-11-06 23:47:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:59,282 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:59,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:59,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:59,649 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:47:59,650 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:47:59,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:47:59,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:47:59 BoogieIcfgContainer [2020-11-06 23:47:59,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:47:59,687 INFO L168 Benchmark]: Toolchain (without parser) took 51053.43 ms. Allocated memory was 151.0 MB in the beginning and 1.1 GB in the end (delta: 912.3 MB). Free memory was 126.2 MB in the beginning and 662.1 MB in the end (delta: -535.9 MB). Peak memory consumption was 376.8 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:59,691 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:47:59,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 103.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:59,695 INFO L168 Benchmark]: Boogie Preprocessor took 134.09 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 99.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:59,701 INFO L168 Benchmark]: RCFGBuilder took 1421.59 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 99.2 MB in the beginning and 164.4 MB in the end (delta: -65.2 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:59,702 INFO L168 Benchmark]: TraceAbstraction took 48838.23 ms. Allocated memory was 200.3 MB in the beginning and 1.1 GB in the end (delta: 863.0 MB). Free memory was 163.9 MB in the beginning and 662.1 MB in the end (delta: -498.2 MB). Peak memory consumption was 364.8 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:59,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 644.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 103.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.09 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 99.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1421.59 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 99.2 MB in the beginning and 164.4 MB in the end (delta: -65.2 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48838.23 ms. Allocated memory was 200.3 MB in the beginning and 1.1 GB in the end (delta: 863.0 MB). Free memory was 163.9 MB in the beginning and 662.1 MB in the end (delta: -498.2 MB). Peak memory consumption was 364.8 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: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L591] FCALL select_helpers() [L592] FCALL select_features() [L593] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] RET, EXPR valid_product() [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L597] FCALL setup() [L598] CALL runTest() [L580] CALL test() [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) [L107] CALL waterRise() [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 [L107] RET waterRise() [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) [L117] CALL changeMethaneLevel() [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 [L117] RET changeMethaneLevel() [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L140] CALL timeShift() [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L178] CALL processEnvironment() [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L268] CALL processEnvironment__wrappee__lowWaterSensor() [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L242] CALL processEnvironment__wrappee__highWaterSensor() [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L203] CALL, EXPR isHighWaterLevel() [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L353] CALL, EXPR isHighWaterSensorDry() [L481] int retValue_acc ; [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); [L353] RET, EXPR isHighWaterSensorDry() [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] RET, EXPR isHighWaterLevel() [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L207] CALL activatePump() [L278] pumpRunning = 1 [L207] RET activatePump() [L242] RET processEnvironment__wrappee__highWaterSensor() [L268] RET processEnvironment__wrappee__lowWaterSensor() [L178] RET processEnvironment() [L184] CALL __utac_acc__Specification1_spec__1() [L610] int tmp ; [L611] int tmp___0 ; [L615] CALL, EXPR isMethaneLevelCritical() [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] RET, EXPR isMethaneLevelCritical() [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L619] CALL, EXPR isPumpRunning() [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); [L619] RET, EXPR isPumpRunning() [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) [L623] CALL __automaton_fail() [L508] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product55.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 668 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 38.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2230 SDtfs, 4121 SDslu, 4095 SDs, 0 SdLazy, 9163 SolverSat, 1351 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2465occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1837 StatesRemovedByMinimization, 8 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...