/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_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:14:37,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:14:37,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:14:37,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:14:37,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:14:37,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:14:37,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:14:37,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:14:37,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:14:37,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:14:37,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:14:37,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:14:37,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:14:37,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:14:37,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:14:37,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:14:37,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:14:37,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:14:37,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:14:37,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:14:37,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:14:37,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:14:37,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:14:37,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:14:37,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:14:37,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:14:37,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:14:37,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:14:37,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:14:37,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:14:37,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:14:37,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:14:37,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:14:37,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:14:37,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:14:37,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:14:37,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:14:37,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:14:37,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:14:37,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:14:37,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:14:37,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:14:37,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:14:37,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:14:37,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:14:37,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:14:37,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:14:37,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:14:37,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:14:37,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:14:37,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:14:37,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:14:37,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:14:37,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:14:37,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:14:37,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:14:37,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:14:37,585 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:14:37,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:14:37,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:14:37,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:14:37,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:14:37,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:14:37,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:14:37,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:14:38,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:14:38,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:14:38,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:14:38,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:14:38,160 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:14:38,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-10-23 20:14:38,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7530d195/7a1b3ba70e71493daa1ba16e6aa5de08/FLAGf6ee6b084 [2020-10-23 20:14:39,253 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:14:39,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-10-23 20:14:39,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7530d195/7a1b3ba70e71493daa1ba16e6aa5de08/FLAGf6ee6b084 [2020-10-23 20:14:39,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7530d195/7a1b3ba70e71493daa1ba16e6aa5de08 [2020-10-23 20:14:39,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:14:39,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:14:39,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:14:39,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:14:39,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:14:39,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:14:39" (1/1) ... [2020-10-23 20:14:39,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473eb7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:39, skipping insertion in model container [2020-10-23 20:14:39,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:14:39" (1/1) ... [2020-10-23 20:14:39,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:14:39,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:14:39,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:14:39,981 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:14:40,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:14:40,196 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:14:40,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40 WrapperNode [2020-10-23 20:14:40,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:14:40,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:14:40,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:14:40,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:14:40,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (1/1) ... [2020-10-23 20:14:40,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:14:40,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:14:40,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:14:40,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:14:40,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (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 [2020-10-23 20:14:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:14:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:14:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:14:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:14:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:14:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:14:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:14:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:14:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:14:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:14:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:14:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:14:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:14:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:14:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:14:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:14:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:14:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:14:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:14:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:14:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:14:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:14:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:14:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:14:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:14:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:14:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:14:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:14:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:14:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:14:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:14:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:14:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:14:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:14:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:14:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:14:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:14:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:14:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:14:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:14:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:14:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:14:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:14:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:14:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:14:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:14:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:14:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:14:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:14:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:14:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:14:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:14:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:14:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:14:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:14:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:14:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:14:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:14:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:14:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:14:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:14:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:14:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:14:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:14:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:14:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:14:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:14:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:14:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:14:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:14:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:14:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:14:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:14:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:14:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:14:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:14:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:14:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:14:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:14:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:14:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:14:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:14:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:14:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:14:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:14:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:14:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:14:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:14:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:14:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:14:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:14:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:14:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:14:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:14:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:14:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:14:42,225 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:14:42,226 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:14:42,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:14:42 BoogieIcfgContainer [2020-10-23 20:14:42,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:14:42,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:14:42,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:14:42,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:14:42,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:14:39" (1/3) ... [2020-10-23 20:14:42,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e1acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:14:42, skipping insertion in model container [2020-10-23 20:14:42,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:14:40" (2/3) ... [2020-10-23 20:14:42,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e1acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:14:42, skipping insertion in model container [2020-10-23 20:14:42,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:14:42" (3/3) ... [2020-10-23 20:14:42,241 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-10-23 20:14:42,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:14:42,263 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:14:42,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:14:42,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:14:42,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:14:42,309 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:14:42,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:14:42,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:14:42,309 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:14:42,309 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:14:42,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:14:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-23 20:14:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:14:42,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:14:42,362 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] [2020-10-23 20:14:42,363 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]=== [2020-10-23 20:14:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:14:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1445802949, now seen corresponding path program 1 times [2020-10-23 20:14:42,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:14:42,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987649623] [2020-10-23 20:14:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:14:42,474 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:14:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,298 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:14:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:14:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:14:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:14:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:14:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:14:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:14:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:14:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:14:43,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987649623] [2020-10-23 20:14:43,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:14:43,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:14:43,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077790107] [2020-10-23 20:14:43,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:14:43,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:14:43,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:14:43,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:14:43,502 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 3 states. [2020-10-23 20:14:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:14:45,923 INFO L93 Difference]: Finished difference Result 580 states and 686 transitions. [2020-10-23 20:14:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:14:45,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:14:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:14:45,957 INFO L225 Difference]: With dead ends: 580 [2020-10-23 20:14:45,958 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 20:14:45,965 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 [2020-10-23 20:14:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 20:14:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 305. [2020-10-23 20:14:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-23 20:14:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 333 transitions. [2020-10-23 20:14:46,208 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 333 transitions. Word has length 148 [2020-10-23 20:14:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:14:46,209 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 333 transitions. [2020-10-23 20:14:46,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:14:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 333 transitions. [2020-10-23 20:14:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:14:46,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:14:46,215 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] [2020-10-23 20:14:46,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:14:46,216 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]=== [2020-10-23 20:14:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:14:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1603297486, now seen corresponding path program 1 times [2020-10-23 20:14:46,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:14:46,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682312814] [2020-10-23 20:14:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:14:46,224 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:14:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,859 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:14:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:14:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:14:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:14:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:14:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:14:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:14:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:14:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:14:47,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682312814] [2020-10-23 20:14:47,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:14:47,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:14:47,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490314249] [2020-10-23 20:14:47,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:14:47,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:14:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:14:47,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:14:47,055 INFO L87 Difference]: Start difference. First operand 305 states and 333 transitions. Second operand 4 states. [2020-10-23 20:14:48,053 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:14:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:14:49,937 INFO L93 Difference]: Finished difference Result 490 states and 553 transitions. [2020-10-23 20:14:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:14:49,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:14:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:14:49,962 INFO L225 Difference]: With dead ends: 490 [2020-10-23 20:14:49,962 INFO L226 Difference]: Without dead ends: 334 [2020-10-23 20:14:49,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:14:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-23 20:14:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 295. [2020-10-23 20:14:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-23 20:14:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 320 transitions. [2020-10-23 20:14:50,089 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 320 transitions. Word has length 149 [2020-10-23 20:14:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:14:50,090 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 320 transitions. [2020-10-23 20:14:50,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:14:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 320 transitions. [2020-10-23 20:14:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:14:50,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:14:50,094 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] [2020-10-23 20:14:50,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:14:50,095 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]=== [2020-10-23 20:14:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:14:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash -237464804, now seen corresponding path program 1 times [2020-10-23 20:14:50,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:14:50,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440509381] [2020-10-23 20:14:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:14:50,100 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:14:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,628 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:14:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:14:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:14:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:14:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:14:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:14:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:14:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:14:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:14:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:14:50,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440509381] [2020-10-23 20:14:50,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:14:50,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:14:50,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602232911] [2020-10-23 20:14:50,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:14:50,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:14:50,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:14:50,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:14:50,949 INFO L87 Difference]: Start difference. First operand 295 states and 320 transitions. Second operand 10 states. [2020-10-23 20:14:51,833 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:14:52,397 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:14:52,863 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:14:53,386 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:14:53,852 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:14:54,297 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:14:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:14:57,155 INFO L93 Difference]: Finished difference Result 536 states and 615 transitions. [2020-10-23 20:14:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:14:57,156 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:14:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:14:57,160 INFO L225 Difference]: With dead ends: 536 [2020-10-23 20:14:57,160 INFO L226 Difference]: Without dead ends: 356 [2020-10-23 20:14:57,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:14:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-23 20:14:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 295. [2020-10-23 20:14:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-23 20:14:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 319 transitions. [2020-10-23 20:14:57,311 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 319 transitions. Word has length 162 [2020-10-23 20:14:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:14:57,313 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 319 transitions. [2020-10-23 20:14:57,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:14:57,313 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 319 transitions. [2020-10-23 20:14:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:14:57,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:14:57,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:14:57,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:14:57,322 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]=== [2020-10-23 20:14:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:14:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1234701022, now seen corresponding path program 1 times [2020-10-23 20:14:57,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:14:57,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128504116] [2020-10-23 20:14:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:14:57,332 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:14:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,877 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:14:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:14:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:14:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:14:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:14:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:14:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:14:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:14:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:14:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:14:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:14:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:58,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 20:14:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 20:14:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:14:58,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128504116] [2020-10-23 20:14:58,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:14:58,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:14:58,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017509344] [2020-10-23 20:14:58,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:14:58,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:14:58,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:14:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:14:58,106 INFO L87 Difference]: Start difference. First operand 295 states and 319 transitions. Second operand 7 states. [2020-10-23 20:14:58,924 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:15:01,604 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:15:03,147 INFO L93 Difference]: Finished difference Result 737 states and 866 transitions. [2020-10-23 20:15:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:15:03,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-23 20:15:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:15:03,154 INFO L225 Difference]: With dead ends: 737 [2020-10-23 20:15:03,154 INFO L226 Difference]: Without dead ends: 557 [2020-10-23 20:15:03,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:15:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-23 20:15:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 428. [2020-10-23 20:15:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-23 20:15:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 458 transitions. [2020-10-23 20:15:03,349 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 458 transitions. Word has length 180 [2020-10-23 20:15:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:15:03,349 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 458 transitions. [2020-10-23 20:15:03,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:15:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 458 transitions. [2020-10-23 20:15:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-23 20:15:03,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:15:03,353 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] [2020-10-23 20:15:03,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:15:03,354 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]=== [2020-10-23 20:15:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:15:03,355 INFO L82 PathProgramCache]: Analyzing trace with hash 55964036, now seen corresponding path program 1 times [2020-10-23 20:15:03,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:15:03,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903715792] [2020-10-23 20:15:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:15:03,359 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:15:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,840 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:15:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:15:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:15:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:15:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:15:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:15:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:15:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:15:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:15:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:15:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:04,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:15:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:15:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:15:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:04,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 20:15:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-23 20:15:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:15:04,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903715792] [2020-10-23 20:15:04,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:15:04,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:15:04,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087924077] [2020-10-23 20:15:04,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:15:04,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:15:04,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:15:04,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:15:04,157 INFO L87 Difference]: Start difference. First operand 428 states and 458 transitions. Second operand 13 states. [2020-10-23 20:15:05,076 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:15:05,559 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:15:06,019 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:06,474 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:15:06,892 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:08,164 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:08,619 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:15:09,098 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:09,551 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:15:09,994 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:15:12,751 INFO L93 Difference]: Finished difference Result 873 states and 1011 transitions. [2020-10-23 20:15:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:15:12,752 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2020-10-23 20:15:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:15:12,758 INFO L225 Difference]: With dead ends: 873 [2020-10-23 20:15:12,758 INFO L226 Difference]: Without dead ends: 560 [2020-10-23 20:15:12,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:15:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-23 20:15:13,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 434. [2020-10-23 20:15:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-23 20:15:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 464 transitions. [2020-10-23 20:15:13,049 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 464 transitions. Word has length 204 [2020-10-23 20:15:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:15:13,049 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 464 transitions. [2020-10-23 20:15:13,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:15:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 464 transitions. [2020-10-23 20:15:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-23 20:15:13,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:15:13,053 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] [2020-10-23 20:15:13,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:15:13,053 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]=== [2020-10-23 20:15:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:15:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash -357667356, now seen corresponding path program 1 times [2020-10-23 20:15:13,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:15:13,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207803876] [2020-10-23 20:15:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:15:13,057 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:15:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,564 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:15:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:15:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:15:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:15:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:15:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:15:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:15:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:15:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:15:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:15:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:15:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:15:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:15:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 20:15:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-23 20:15:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:15:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:15:13,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207803876] [2020-10-23 20:15:13,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:15:13,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:15:13,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329447521] [2020-10-23 20:15:13,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:15:13,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:15:13,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:15:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:15:13,907 INFO L87 Difference]: Start difference. First operand 434 states and 464 transitions. Second operand 15 states. [2020-10-23 20:15:14,677 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:15:15,266 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:15:15,739 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:15:16,194 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:15:16,658 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:15:17,102 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:15:18,125 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:15:20,228 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:15:20,705 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:15:21,214 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:15:21,712 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:15:22,177 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:15:22,630 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:15:23,102 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:15:23,706 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:15:24,272 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:15:24,761 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:15:27,909 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:15:28,385 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:15:29,124 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:15:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:15:31,722 INFO L93 Difference]: Finished difference Result 1511 states and 1856 transitions. [2020-10-23 20:15:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 20:15:31,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 204 [2020-10-23 20:15:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:15:31,733 INFO L225 Difference]: With dead ends: 1511 [2020-10-23 20:15:31,734 INFO L226 Difference]: Without dead ends: 1192 [2020-10-23 20:15:31,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 20:15:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-10-23 20:15:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 893. [2020-10-23 20:15:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-23 20:15:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 981 transitions. [2020-10-23 20:15:32,181 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 981 transitions. Word has length 204 [2020-10-23 20:15:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:15:32,182 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 981 transitions. [2020-10-23 20:15:32,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:15:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 981 transitions. [2020-10-23 20:15:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-23 20:15:32,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:15:32,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:15:32,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:15:32,190 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]=== [2020-10-23 20:15:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:15:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash -471899545, now seen corresponding path program 1 times [2020-10-23 20:15:32,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:15:32,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448812307] [2020-10-23 20:15:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:15:32,554 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-23 20:15:32,708 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:15:33,041 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-23 20:15:33,174 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-23 20:15:33,477 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-23 20:15:33,609 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:15:33,910 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-23 20:15:34,032 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:15:34,350 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-23 20:15:34,474 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-23 20:15:34,789 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-23 20:15:34,901 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:15:35,187 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-10-23 20:15:35,291 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 20:15:35,608 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-23 20:15:35,718 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:15:36,043 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-10-23 20:15:36,490 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-23 20:15:36,620 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-23 20:15:36,934 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-23 20:15:37,046 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:15:37,366 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-10-23 20:15:37,473 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 20:15:37,778 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-10-23 20:15:37,885 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 20:15:38,194 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-10-23 20:15:38,310 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-23 20:15:40,346 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:15:40,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:43,523 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:15:43,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:45,432 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:15:45,446 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:47,135 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:15:47,141 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:49,984 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:15:49,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:52,865 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:15:52,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:55,696 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:15:55,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:58,561 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:15:58,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:58,573 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:01,387 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:16:01,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:04,268 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:16:04,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:07,088 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:16:07,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:08,801 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:16:08,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:11,620 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:16:11,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:13,943 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:16:13,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:16,147 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:16:16,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:18,957 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:16:18,967 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:18,982 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:21,769 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:16:21,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:24,541 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:16:27,439 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2020-10-23 20:16:27,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:29,633 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2020-10-23 20:16:29,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:32,345 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:16:32,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:35,244 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2020-10-23 20:16:35,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:37,272 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2020-10-23 20:16:37,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:40,121 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:16:40,128 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:40,132 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:40,703 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:16:41,327 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:16:41,921 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2020-10-23 20:16:42,504 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2020-10-23 20:16:43,061 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2020-10-23 20:16:43,638 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2020-10-23 20:16:44,246 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:16:44,849 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:16:44,852 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:47,752 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2020-10-23 20:16:47,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:50,745 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2020-10-23 20:16:50,749 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:53,524 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2020-10-23 20:16:56,387 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2020-10-23 20:16:56,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:59,251 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2020-10-23 20:16:59,255 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:02,019 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2020-10-23 20:17:02,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:04,990 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2020-10-23 20:17:04,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:07,994 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2020-10-23 20:17:07,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:08,003 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:08,559 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 140 [2020-10-23 20:17:09,160 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:17:09,764 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:17:10,346 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 140 [2020-10-23 20:17:10,907 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 140 [2020-10-23 20:17:11,455 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 140 [2020-10-23 20:17:12,043 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:17:12,632 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2020-10-23 20:17:12,634 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:14,834 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:17:14,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:17,550 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:17:17,554 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:20,366 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:17:20,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:22,668 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:17:25,517 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2020-10-23 20:17:25,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:28,301 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 202 [2020-10-23 20:17:28,305 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:31,064 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:17:31,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:33,865 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:17:33,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:33,871 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:36,617 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2020-10-23 20:17:36,621 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:39,060 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:17:39,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:41,850 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2020-10-23 20:17:41,853 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:44,751 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:17:44,754 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:47,580 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2020-10-23 20:17:47,583 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:50,465 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:17:50,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:53,322 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2020-10-23 20:17:53,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:56,260 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:17:56,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:56,268 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:59,007 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2020-10-23 20:17:59,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:01,930 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2020-10-23 20:18:01,933 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:04,183 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2020-10-23 20:18:07,024 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-23 20:18:07,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:09,840 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 195 [2020-10-23 20:18:09,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:12,687 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-23 20:18:12,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:15,488 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-23 20:18:15,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:18,209 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2020-10-23 20:18:18,214 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:21,092 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:18:21,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:23,936 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2020-10-23 20:18:23,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:26,766 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2020-10-23 20:18:26,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:29,656 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:18:29,659 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:32,492 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2020-10-23 20:18:34,878 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:18:37,744 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 201 [2020-10-23 20:18:37,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:40,762 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2020-10-23 20:18:40,765 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:40,767 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:41,386 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 146 [2020-10-23 20:18:42,009 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 146 [2020-10-23 20:18:42,558 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-23 20:18:43,134 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-23 20:18:43,768 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 146 [2020-10-23 20:18:44,356 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-23 20:18:44,942 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-23 20:18:45,564 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 146 [2020-10-23 20:18:45,567 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:46,136 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 135 [2020-10-23 20:18:46,760 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-23 20:18:47,327 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 136 [2020-10-23 20:18:47,892 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 135 [2020-10-23 20:18:48,498 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-23 20:18:49,059 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 136 [2020-10-23 20:18:49,651 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 142 [2020-10-23 20:18:50,258 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-23 20:18:50,260 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:50,802 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 135 [2020-10-23 20:18:51,377 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-23 20:18:51,980 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-23 20:18:52,578 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 142 [2020-10-23 20:18:53,151 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-23 20:18:53,670 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 136 [2020-10-23 20:18:54,199 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 135 [2020-10-23 20:18:54,727 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 136 [2020-10-23 20:18:54,728 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:55,310 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2020-10-23 20:18:55,865 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 137 [2020-10-23 20:18:56,388 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2020-10-23 20:18:56,967 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 143 [2020-10-23 20:18:57,571 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2020-10-23 20:18:58,105 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 137 [2020-10-23 20:18:58,678 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2020-10-23 20:18:59,234 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2020-10-23 20:18:59,237 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:18:59,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:19:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:19:00,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:19:00,517 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:19:00,517 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:19:00,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:19:00,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:19:00 BoogieIcfgContainer [2020-10-23 20:19:00,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:19:00,573 INFO L168 Benchmark]: Toolchain (without parser) took 261071.07 ms. Allocated memory was 153.1 MB in the beginning and 595.6 MB in the end (delta: 442.5 MB). Free memory was 128.5 MB in the beginning and 464.0 MB in the end (delta: -335.5 MB). Peak memory consumption was 107.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:19:00,575 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:19:00,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.67 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 106.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:19:00,576 INFO L168 Benchmark]: Boogie Preprocessor took 113.99 ms. Allocated memory is still 153.1 MB. Free memory was 105.9 MB in the beginning and 101.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:19:00,576 INFO L168 Benchmark]: RCFGBuilder took 1913.24 ms. Allocated memory was 153.1 MB in the beginning and 198.2 MB in the end (delta: 45.1 MB). Free memory was 101.9 MB in the beginning and 126.1 MB in the end (delta: -24.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:19:00,579 INFO L168 Benchmark]: TraceAbstraction took 258340.17 ms. Allocated memory was 198.2 MB in the beginning and 595.6 MB in the end (delta: 397.4 MB). Free memory was 126.1 MB in the beginning and 464.0 MB in the end (delta: -337.9 MB). Peak memory consumption was 59.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:19:00,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 688.67 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 106.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.99 ms. Allocated memory is still 153.1 MB. Free memory was 105.9 MB in the beginning and 101.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1913.24 ms. Allocated memory was 153.1 MB in the beginning and 198.2 MB in the end (delta: 45.1 MB). Free memory was 101.9 MB in the beginning and 126.1 MB in the end (delta: -24.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 258340.17 ms. Allocated memory was 198.2 MB in the beginning and 595.6 MB in the end (delta: 397.4 MB). Free memory was 126.1 MB in the beginning and 464.0 MB in the end (delta: -337.9 MB). Peak memory consumption was 59.5 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: [L132] int pumpRunning = 0; [L133] int systemActive = 1; [L446] int cleanupTimeShifts = 4; [L711] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L519] int retValue_acc ; [L520] int tmp ; [L524] FCALL select_helpers() [L525] FCALL select_features() [L526] CALL, EXPR valid_product() [L437] int retValue_acc ; [L440] retValue_acc = 1 [L441] return (retValue_acc); [L526] RET, EXPR valid_product() [L526] tmp = valid_product() [L528] COND TRUE \read(tmp) [L530] FCALL setup() [L531] CALL runTest() [L513] CALL test() [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 [L66] COND TRUE 1 [L68] COND TRUE splverifierCounter < 4 [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) [L78] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L78] RET waterRise() [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L376] systemActive = 1 [L98] RET startSystem() [L111] CALL timeShift() [L140] COND FALSE !(\read(pumpRunning)) [L147] COND TRUE \read(systemActive) [L149] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__methaneQuery() [L195] int tmp ; [L198] COND FALSE !(\read(pumpRunning)) [L213] CALL processEnvironment__wrappee__highWaterSensor() [L169] int tmp ; [L172] COND TRUE ! pumpRunning [L174] CALL, EXPR isHighWaterLevel() [L335] int retValue_acc ; [L336] int tmp ; [L337] int tmp___0 ; [L341] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND TRUE waterLevel < 2 [L992] retValue_acc = 1 [L993] return (retValue_acc); [L341] RET, EXPR isHighWaterSensorDry() [L341] tmp = isHighWaterSensorDry() [L343] COND TRUE \read(tmp) [L344] tmp___0 = 0 [L348] retValue_acc = tmp___0 [L349] return (retValue_acc); [L174] RET, EXPR isHighWaterLevel() [L174] tmp = isHighWaterLevel() [L176] COND FALSE !(\read(tmp)) [L182] FCALL processEnvironment__wrappee__base() [L213] RET processEnvironment__wrappee__highWaterSensor() [L239] RET processEnvironment__wrappee__methaneQuery() [L149] RET processEnvironment() [L155] CALL __utac_acc__Specification4_spec__1() [L383] int tmp ; [L384] int tmp___0 ; [L388] CALL, EXPR getWaterLevel() [L979] int retValue_acc ; [L982] retValue_acc = waterLevel [L983] return (retValue_acc); [L388] RET, EXPR getWaterLevel() [L388] tmp = getWaterLevel() [L390] COND FALSE !(tmp == 0) [L155] RET __utac_acc__Specification4_spec__1() [L111] RET timeShift() [L66] COND TRUE 1 [L68] COND TRUE splverifierCounter < 4 [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) [L78] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L78] RET waterRise() [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L376] systemActive = 1 [L98] RET startSystem() [L111] CALL timeShift() [L140] COND FALSE !(\read(pumpRunning)) [L147] COND TRUE \read(systemActive) [L149] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__methaneQuery() [L195] int tmp ; [L198] COND FALSE !(\read(pumpRunning)) [L213] CALL processEnvironment__wrappee__highWaterSensor() [L169] int tmp ; [L172] COND TRUE ! pumpRunning [L174] CALL, EXPR isHighWaterLevel() [L335] int retValue_acc ; [L336] int tmp ; [L337] int tmp___0 ; [L341] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND TRUE waterLevel < 2 [L992] retValue_acc = 1 [L993] return (retValue_acc); [L341] RET, EXPR isHighWaterSensorDry() [L341] tmp = isHighWaterSensorDry() [L343] COND TRUE \read(tmp) [L344] tmp___0 = 0 [L348] retValue_acc = tmp___0 [L349] return (retValue_acc); [L174] RET, EXPR isHighWaterLevel() [L174] tmp = isHighWaterLevel() [L176] COND FALSE !(\read(tmp)) [L182] FCALL processEnvironment__wrappee__base() [L213] RET processEnvironment__wrappee__highWaterSensor() [L239] RET processEnvironment__wrappee__methaneQuery() [L149] RET processEnvironment() [L155] CALL __utac_acc__Specification4_spec__1() [L383] int tmp ; [L384] int tmp___0 ; [L388] CALL, EXPR getWaterLevel() [L979] int retValue_acc ; [L982] retValue_acc = waterLevel [L983] return (retValue_acc); [L388] RET, EXPR getWaterLevel() [L388] tmp = getWaterLevel() [L390] COND TRUE tmp == 0 [L392] CALL, EXPR isPumpRunning() [L290] int retValue_acc ; [L293] retValue_acc = pumpRunning [L294] return (retValue_acc); [L392] RET, EXPR isPumpRunning() [L392] tmp___0 = isPumpRunning() [L394] COND TRUE \read(tmp___0) [L396] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product62.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 675 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 258.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1741 SDtfs, 3026 SDslu, 3456 SDs, 0 SdLazy, 8141 SolverSat, 1042 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=893occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 700 StatesRemovedByMinimization, 6 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...