/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_spec5_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:21:27,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:21:27,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:21:27,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:21:27,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:21:27,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:21:27,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:21:27,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:21:27,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:21:27,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:21:27,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:21:27,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:21:27,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:21:27,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:21:27,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:21:27,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:21:27,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:21:27,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:21:27,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:21:27,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:21:27,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:21:27,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:21:27,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:21:27,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:21:27,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:21:27,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:21:27,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:21:27,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:21:27,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:21:27,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:21:27,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:21:27,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:21:28,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:21:28,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:21:28,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:21:28,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:21:28,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:21:28,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:21:28,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:21:28,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:21:28,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:21:28,007 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 20:21:28,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:21:28,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:21:28,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:21:28,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:21:28,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:21:28,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:21:28,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:21:28,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:21:28,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:21:28,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:21:28,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:21:28,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:21:28,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:21:28,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:21:28,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:21:28,039 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:21:28,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:21:28,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:21:28,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:21:28,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:21:28,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:21:28,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:21:28,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:21:28,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:21:28,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:21:28,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:21:28,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:21:28,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:21:28,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-10-23 20:21:28,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6649c2f1/4548b8f2c85f47a9a359de211b338bca/FLAG0efe27013 [2020-10-23 20:21:29,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:21:29,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-10-23 20:21:29,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6649c2f1/4548b8f2c85f47a9a359de211b338bca/FLAG0efe27013 [2020-10-23 20:21:29,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6649c2f1/4548b8f2c85f47a9a359de211b338bca [2020-10-23 20:21:29,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:21:29,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:21:29,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:29,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:21:29,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:21:29,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbb699b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:29, skipping insertion in model container [2020-10-23 20:21:29,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:29" (1/1) ... [2020-10-23 20:21:29,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:21:29,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:21:30,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:30,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:21:30,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:30,219 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:21:30,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30 WrapperNode [2020-10-23 20:21:30,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:30,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:21:30,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:21:30,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:21:30,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:21:30,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:21:30,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:21:30,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:21:30,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (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 20:21:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:21:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:21:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:21:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:21:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:21:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:21:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:21:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:21:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:21:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:21:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:21:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:21:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:21:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:21:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:21:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:21:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:21:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:21:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:21:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:21:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:21:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:21:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:21:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:21:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:21:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:21:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:21:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:21:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:21:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:21:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:21:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:21:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:21:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:21:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:21:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:21:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:21:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:21:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:21:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:21:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:21:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:21:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:21:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:21:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:21:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:21:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:21:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:21:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:21:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:21:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:21:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:21:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:21:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:21:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:21:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:21:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:21:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:21:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:21:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:21:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:21:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:21:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:21:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:21:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:21:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:21:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:21:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:21:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:21:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:21:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:21:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:21:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:21:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:21:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:21:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:21:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:21:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:21:31,946 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:21:31,947 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:21:31,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:31 BoogieIcfgContainer [2020-10-23 20:21:31,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:21:31,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:21:31,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:21:31,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:21:31,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:29" (1/3) ... [2020-10-23 20:21:31,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efbaafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:31, skipping insertion in model container [2020-10-23 20:21:31,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30" (2/3) ... [2020-10-23 20:21:31,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efbaafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:31, skipping insertion in model container [2020-10-23 20:21:31,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:31" (3/3) ... [2020-10-23 20:21:31,960 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2020-10-23 20:21:31,973 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:21:31,979 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:21:31,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:21:32,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:21:32,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:21:32,023 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:21:32,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:21:32,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:21:32,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:21:32,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:21:32,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:21:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-10-23 20:21:32,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:21:32,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:32,072 INFO L422 BasicCegarLoop]: trace histogram [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, 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 20:21:32,073 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 20:21:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:32,080 INFO L82 PathProgramCache]: Analyzing trace with hash 186130233, now seen corresponding path program 1 times [2020-10-23 20:21:32,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:32,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643264830] [2020-10-23 20:21:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:32,179 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:32,900 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:21:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:21:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:33,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643264830] [2020-10-23 20:21:33,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:33,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:21:33,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477768779] [2020-10-23 20:21:33,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:21:33,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:33,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:21:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:33,197 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 4 states. [2020-10-23 20:21:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:34,792 INFO L93 Difference]: Finished difference Result 527 states and 616 transitions. [2020-10-23 20:21:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:21:34,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:21:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:34,832 INFO L225 Difference]: With dead ends: 527 [2020-10-23 20:21:34,832 INFO L226 Difference]: Without dead ends: 330 [2020-10-23 20:21:34,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-23 20:21:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 284. [2020-10-23 20:21:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-23 20:21:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 308 transitions. [2020-10-23 20:21:35,088 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 308 transitions. Word has length 166 [2020-10-23 20:21:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:35,092 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 308 transitions. [2020-10-23 20:21:35,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:21:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 308 transitions. [2020-10-23 20:21:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:21:35,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:35,110 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 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 20:21:35,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:21:35,111 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 20:21:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:35,112 INFO L82 PathProgramCache]: Analyzing trace with hash -773999638, now seen corresponding path program 1 times [2020-10-23 20:21:35,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:35,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819168842] [2020-10-23 20:21:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:35,117 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,623 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:21:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:35,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819168842] [2020-10-23 20:21:35,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:35,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:21:35,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397971032] [2020-10-23 20:21:35,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:21:35,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:21:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:21:35,767 INFO L87 Difference]: Start difference. First operand 284 states and 308 transitions. Second operand 5 states. [2020-10-23 20:21:36,681 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:38,069 INFO L93 Difference]: Finished difference Result 449 states and 504 transitions. [2020-10-23 20:21:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:21:38,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:21:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:38,074 INFO L225 Difference]: With dead ends: 449 [2020-10-23 20:21:38,075 INFO L226 Difference]: Without dead ends: 319 [2020-10-23 20:21:38,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:21:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-23 20:21:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 274. [2020-10-23 20:21:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 20:21:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 295 transitions. [2020-10-23 20:21:38,205 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 295 transitions. Word has length 167 [2020-10-23 20:21:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:38,206 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 295 transitions. [2020-10-23 20:21:38,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:21:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 295 transitions. [2020-10-23 20:21:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:21:38,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:38,209 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:38,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:21:38,210 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 20:21:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:38,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1323865920, now seen corresponding path program 1 times [2020-10-23 20:21:38,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:38,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26195408] [2020-10-23 20:21:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:38,215 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,688 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:21:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:21:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:38,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26195408] [2020-10-23 20:21:38,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:38,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:38,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940990681] [2020-10-23 20:21:38,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:38,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:38,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:38,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:38,991 INFO L87 Difference]: Start difference. First operand 274 states and 295 transitions. Second operand 11 states. [2020-10-23 20:21:39,752 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:40,278 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:40,727 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:21:41,187 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:41,601 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:41,965 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:44,157 INFO L93 Difference]: Finished difference Result 496 states and 569 transitions. [2020-10-23 20:21:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:21:44,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:21:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:44,162 INFO L225 Difference]: With dead ends: 496 [2020-10-23 20:21:44,162 INFO L226 Difference]: Without dead ends: 342 [2020-10-23 20:21:44,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:21:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-23 20:21:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 274. [2020-10-23 20:21:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 20:21:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 294 transitions. [2020-10-23 20:21:44,290 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 294 transitions. Word has length 180 [2020-10-23 20:21:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:44,290 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 294 transitions. [2020-10-23 20:21:44,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 294 transitions. [2020-10-23 20:21:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-23 20:21:44,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:44,294 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:44,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:21:44,295 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 20:21:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:44,295 INFO L82 PathProgramCache]: Analyzing trace with hash -399947828, now seen corresponding path program 1 times [2020-10-23 20:21:44,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:44,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129839367] [2020-10-23 20:21:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:44,300 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,711 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-23 20:21:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-23 20:21:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:44,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129839367] [2020-10-23 20:21:44,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:44,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:21:44,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88378680] [2020-10-23 20:21:44,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:21:44,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:44,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:21:44,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:21:44,968 INFO L87 Difference]: Start difference. First operand 274 states and 294 transitions. Second operand 8 states. [2020-10-23 20:21:45,704 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:48,102 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:48,936 INFO L93 Difference]: Finished difference Result 687 states and 816 transitions. [2020-10-23 20:21:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:21:48,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-23 20:21:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:48,942 INFO L225 Difference]: With dead ends: 687 [2020-10-23 20:21:48,943 INFO L226 Difference]: Without dead ends: 533 [2020-10-23 20:21:48,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:21:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-10-23 20:21:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 393. [2020-10-23 20:21:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-23 20:21:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 425 transitions. [2020-10-23 20:21:49,111 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 425 transitions. Word has length 193 [2020-10-23 20:21:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:49,112 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 425 transitions. [2020-10-23 20:21:49,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:21:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 425 transitions. [2020-10-23 20:21:49,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 20:21:49,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:49,115 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:49,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:21:49,116 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 20:21:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2017650149, now seen corresponding path program 1 times [2020-10-23 20:21:49,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:49,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275598319] [2020-10-23 20:21:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:49,121 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,563 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 20:21:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 20:21:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:21:49,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275598319] [2020-10-23 20:21:49,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:49,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:49,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586211092] [2020-10-23 20:21:49,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:49,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:49,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:49,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:49,809 INFO L87 Difference]: Start difference. First operand 393 states and 425 transitions. Second operand 11 states. [2020-10-23 20:21:50,531 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:51,719 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:52,097 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:53,230 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:53,678 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:54,163 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:54,933 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:55,344 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:55,735 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:56,617 INFO L93 Difference]: Finished difference Result 803 states and 941 transitions. [2020-10-23 20:21:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 20:21:56,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-10-23 20:21:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:56,623 INFO L225 Difference]: With dead ends: 803 [2020-10-23 20:21:56,623 INFO L226 Difference]: Without dead ends: 530 [2020-10-23 20:21:56,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-23 20:21:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-23 20:21:56,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 392. [2020-10-23 20:21:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-23 20:21:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 422 transitions. [2020-10-23 20:21:56,791 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 422 transitions. Word has length 217 [2020-10-23 20:21:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:56,792 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 422 transitions. [2020-10-23 20:21:56,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 422 transitions. [2020-10-23 20:21:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:21:56,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:56,796 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:56,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:21:56,796 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 20:21:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash -896123223, now seen corresponding path program 1 times [2020-10-23 20:21:56,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:56,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980268403] [2020-10-23 20:21:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:56,801 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,195 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:21:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:21:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,487 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 20:21:57,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980268403] [2020-10-23 20:21:57,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:57,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:57,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914728292] [2020-10-23 20:21:57,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:57,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:57,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:57,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:57,491 INFO L87 Difference]: Start difference. First operand 392 states and 422 transitions. Second operand 11 states. [2020-10-23 20:21:59,204 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:59,612 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:00,018 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:22:00,400 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:00,803 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:01,178 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:02,656 INFO L93 Difference]: Finished difference Result 804 states and 937 transitions. [2020-10-23 20:22:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:02,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-10-23 20:22:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:02,662 INFO L225 Difference]: With dead ends: 804 [2020-10-23 20:22:02,662 INFO L226 Difference]: Without dead ends: 532 [2020-10-23 20:22:02,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:22:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-23 20:22:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 400. [2020-10-23 20:22:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-23 20:22:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 430 transitions. [2020-10-23 20:22:02,834 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 430 transitions. Word has length 218 [2020-10-23 20:22:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:02,834 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 430 transitions. [2020-10-23 20:22:02,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:22:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 430 transitions. [2020-10-23 20:22:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:22:02,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:02,839 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:02,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:22:02,840 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 20:22:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:02,840 INFO L82 PathProgramCache]: Analyzing trace with hash -482491831, now seen corresponding path program 1 times [2020-10-23 20:22:02,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:02,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676309542] [2020-10-23 20:22:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:02,844 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,270 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:22:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:22:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:22:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:03,564 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 20:22:03,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676309542] [2020-10-23 20:22:03,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:03,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:22:03,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873971685] [2020-10-23 20:22:03,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:22:03,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:03,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:22:03,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:22:03,571 INFO L87 Difference]: Start difference. First operand 400 states and 430 transitions. Second operand 14 states. [2020-10-23 20:22:04,334 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:04,729 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:05,108 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:05,493 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:05,864 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:07,140 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:07,519 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:07,923 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:08,320 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:08,698 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:10,547 INFO L93 Difference]: Finished difference Result 823 states and 968 transitions. [2020-10-23 20:22:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:22:10,547 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-10-23 20:22:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:10,551 INFO L225 Difference]: With dead ends: 823 [2020-10-23 20:22:10,552 INFO L226 Difference]: Without dead ends: 543 [2020-10-23 20:22:10,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:22:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-23 20:22:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 406. [2020-10-23 20:22:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-23 20:22:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 436 transitions. [2020-10-23 20:22:10,729 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 436 transitions. Word has length 218 [2020-10-23 20:22:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:10,730 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 436 transitions. [2020-10-23 20:22:10,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:22:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 436 transitions. [2020-10-23 20:22:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:22:10,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:10,734 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:10,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:22:10,734 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:10,735 INFO L82 PathProgramCache]: Analyzing trace with hash -552009940, now seen corresponding path program 1 times [2020-10-23 20:22:10,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:10,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829508814] [2020-10-23 20:22:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:10,739 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,120 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:22:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:22:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:22:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:11,370 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 20:22:11,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829508814] [2020-10-23 20:22:11,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:11,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:22:11,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481856357] [2020-10-23 20:22:11,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:22:11,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:11,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:22:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:22:11,373 INFO L87 Difference]: Start difference. First operand 406 states and 436 transitions. Second operand 8 states. [2020-10-23 20:22:12,027 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:12,864 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:16,077 INFO L93 Difference]: Finished difference Result 1155 states and 1392 transitions. [2020-10-23 20:22:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 20:22:16,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-23 20:22:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:16,084 INFO L225 Difference]: With dead ends: 1155 [2020-10-23 20:22:16,084 INFO L226 Difference]: Without dead ends: 869 [2020-10-23 20:22:16,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:22:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-10-23 20:22:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 661. [2020-10-23 20:22:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-23 20:22:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 728 transitions. [2020-10-23 20:22:16,467 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 728 transitions. Word has length 218 [2020-10-23 20:22:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:16,468 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 728 transitions. [2020-10-23 20:22:16,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:22:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 728 transitions. [2020-10-23 20:22:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-23 20:22:16,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:16,471 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:16,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:22:16,471 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:16,472 INFO L82 PathProgramCache]: Analyzing trace with hash -188110234, now seen corresponding path program 1 times [2020-10-23 20:22:16,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:16,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314640713] [2020-10-23 20:22:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:16,475 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,021 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:22:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:22:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:22:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-23 20:22:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:17,352 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 20:22:17,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314640713] [2020-10-23 20:22:17,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:17,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:22:17,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107911829] [2020-10-23 20:22:17,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:22:17,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:22:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:22:17,354 INFO L87 Difference]: Start difference. First operand 661 states and 728 transitions. Second operand 15 states. [2020-10-23 20:22:18,521 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:22:19,600 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:21,861 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:22:22,632 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:22:23,063 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:23,461 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:24,205 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:22:24,593 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:25,030 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:25,419 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:28,112 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:28,484 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:28,878 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:29,774 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:31,859 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:22:32,619 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:33,435 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:22:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:34,313 INFO L93 Difference]: Finished difference Result 2047 states and 2460 transitions. [2020-10-23 20:22:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-23 20:22:34,314 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2020-10-23 20:22:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:34,324 INFO L225 Difference]: With dead ends: 2047 [2020-10-23 20:22:34,325 INFO L226 Difference]: Without dead ends: 1613 [2020-10-23 20:22:34,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=798, Invalid=3108, Unknown=0, NotChecked=0, Total=3906 [2020-10-23 20:22:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-10-23 20:22:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1170. [2020-10-23 20:22:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-23 20:22:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1280 transitions. [2020-10-23 20:22:34,887 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1280 transitions. Word has length 223 [2020-10-23 20:22:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:34,888 INFO L481 AbstractCegarLoop]: Abstraction has 1170 states and 1280 transitions. [2020-10-23 20:22:34,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:22:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1280 transitions. [2020-10-23 20:22:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-23 20:22:34,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:34,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:34,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:22:34,894 INFO L429 AbstractCegarLoop]: === Iteration 10 === [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 20:22:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:34,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1014750124, now seen corresponding path program 1 times [2020-10-23 20:22:34,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:34,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960110529] [2020-10-23 20:22:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:35,271 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-23 20:22:35,414 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:22:35,676 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-23 20:22:36,010 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:22:36,348 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-23 20:22:36,723 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:22:37,145 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-23 20:22:37,572 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:22:37,999 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:22:38,106 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:22:38,414 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:22:38,518 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:22:38,787 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:22:39,151 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:22:39,520 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:22:39,916 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-23 20:22:40,309 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:22:40,413 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:22:41,013 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:41,588 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:42,150 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:42,711 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:42,722 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:43,568 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:22:44,389 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:22:44,394 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:45,183 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:45,961 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:45,974 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:46,729 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:22:47,469 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:22:47,480 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:48,244 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:22:49,055 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:22:49,062 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:49,654 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:50,203 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:50,758 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:51,300 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:22:51,303 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:51,848 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2020-10-23 20:22:52,379 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2020-10-23 20:22:52,908 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2020-10-23 20:22:53,434 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2020-10-23 20:22:53,437 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:53,994 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-23 20:22:54,541 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2020-10-23 20:22:55,058 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2020-10-23 20:22:55,598 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-23 20:22:55,601 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:56,161 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2020-10-23 20:22:56,717 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2020-10-23 20:22:57,254 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2020-10-23 20:22:57,816 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2020-10-23 20:22:57,820 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:58,630 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:59,368 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:59,374 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:00,146 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:23:00,906 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:23:00,923 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:01,666 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:23:02,393 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:23:02,400 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:02,966 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-23 20:23:03,525 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-23 20:23:04,078 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-23 20:23:04,633 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-23 20:23:04,636 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:05,406 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:23:06,157 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:23:06,164 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:23:06,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:23:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:23:06,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:23:06,593 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:23:06,593 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:23:06,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:23:06,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:23:06 BoogieIcfgContainer [2020-10-23 20:23:06,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:23:06,629 INFO L168 Benchmark]: Toolchain (without parser) took 97025.63 ms. Allocated memory was 151.0 MB in the beginning and 679.5 MB in the end (delta: 528.5 MB). Free memory was 126.3 MB in the beginning and 422.8 MB in the end (delta: -296.6 MB). Peak memory consumption was 233.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:06,629 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:23:06,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:06,631 INFO L168 Benchmark]: Boogie Preprocessor took 94.01 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 99.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:06,631 INFO L168 Benchmark]: RCFGBuilder took 1633.90 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 99.7 MB in the beginning and 116.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:06,632 INFO L168 Benchmark]: TraceAbstraction took 94675.29 ms. Allocated memory was 184.5 MB in the beginning and 679.5 MB in the end (delta: 494.9 MB). Free memory was 115.9 MB in the beginning and 422.8 MB in the end (delta: -307.0 MB). Peak memory consumption was 188.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:06,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 609.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.01 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 99.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1633.90 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 99.7 MB in the beginning and 116.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 94675.29 ms. Allocated memory was 184.5 MB in the beginning and 679.5 MB in the end (delta: 494.9 MB). Free memory was 115.9 MB in the beginning and 422.8 MB in the end (delta: -307.0 MB). Peak memory consumption was 188.0 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: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L343] int waterLevel = 1; [L344] int methaneLevelCritical = 0; [L615] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L812] int switchedOnBeforeTS ; [L899] int cleanupTimeShifts = 4; [L973] int retValue_acc ; [L974] int tmp ; [L978] FCALL select_helpers() [L979] FCALL select_features() [L980] CALL, EXPR valid_product() [L890] int retValue_acc ; [L893] retValue_acc = 1 [L894] return (retValue_acc); [L980] RET, EXPR valid_product() [L980] tmp = valid_product() [L982] COND TRUE \read(tmp) [L984] FCALL setup() [L985] CALL runTest() [L966] CALL __utac_acc__Specification5_spec__1() [L817] switchedOnBeforeTS = 0 [L966] RET __utac_acc__Specification5_spec__1() [L967] CALL test() [L276] int splverifierCounter ; [L277] int tmp ; [L278] int tmp___0 ; [L279] int tmp___1 ; [L280] int tmp___2 ; [L283] splverifierCounter = 0 [L285] COND TRUE 1 [L287] COND TRUE splverifierCounter < 4 [L293] tmp = __VERIFIER_nondet_int() [L295] COND TRUE \read(tmp) [L297] CALL waterRise() [L361] COND TRUE waterLevel < 2 [L362] waterLevel = waterLevel + 1 [L297] RET waterRise() [L303] tmp___0 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___0)) [L313] tmp___2 = __VERIFIER_nondet_int() [L315] COND TRUE \read(tmp___2) [L317] CALL startSystem() [L267] systemActive = 1 [L317] RET startSystem() [L330] CALL timeShift() [L72] CALL __utac_acc__Specification5_spec__2() [L826] CALL, EXPR isPumpRunning() [L181] int retValue_acc ; [L184] retValue_acc = pumpRunning [L185] return (retValue_acc); [L826] RET, EXPR isPumpRunning() [L826] switchedOnBeforeTS = isPumpRunning() [L72] RET __utac_acc__Specification5_spec__2() [L74] COND FALSE !(\read(pumpRunning)) [L81] COND TRUE \read(systemActive) [L83] CALL processEnvironment() [L129] int tmp ; [L132] COND FALSE !(\read(pumpRunning)) [L147] CALL processEnvironment__wrappee__highWaterSensor() [L103] int tmp ; [L106] COND TRUE ! pumpRunning [L108] CALL, EXPR isHighWaterLevel() [L226] int retValue_acc ; [L227] int tmp ; [L228] int tmp___0 ; [L232] CALL, EXPR isHighWaterSensorDry() [L423] int retValue_acc ; [L426] COND FALSE !(waterLevel < 2) [L430] retValue_acc = 0 [L431] return (retValue_acc); [L232] RET, EXPR isHighWaterSensorDry() [L232] tmp = isHighWaterSensorDry() [L234] COND FALSE !(\read(tmp)) [L237] tmp___0 = 1 [L239] retValue_acc = tmp___0 [L240] return (retValue_acc); [L108] RET, EXPR isHighWaterLevel() [L108] tmp = isHighWaterLevel() [L110] COND TRUE \read(tmp) [L112] CALL activatePump() [L157] pumpRunning = 1 [L112] RET activatePump() [L147] RET processEnvironment__wrappee__highWaterSensor() [L83] RET processEnvironment() [L89] CALL __utac_acc__Specification5_spec__3() [L832] int tmp ; [L833] int tmp___0 ; [L837] CALL, EXPR getWaterLevel() [L414] int retValue_acc ; [L417] retValue_acc = waterLevel [L418] return (retValue_acc); [L837] RET, EXPR getWaterLevel() [L837] tmp = getWaterLevel() [L839] COND FALSE !(tmp != 2) [L89] RET __utac_acc__Specification5_spec__3() [L330] RET timeShift() [L285] COND TRUE 1 [L287] COND TRUE splverifierCounter < 4 [L293] tmp = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp)) [L303] tmp___0 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___0)) [L313] tmp___2 = __VERIFIER_nondet_int() [L315] COND TRUE \read(tmp___2) [L317] CALL startSystem() [L267] systemActive = 1 [L317] RET startSystem() [L330] CALL timeShift() [L72] CALL __utac_acc__Specification5_spec__2() [L826] CALL, EXPR isPumpRunning() [L181] int retValue_acc ; [L184] retValue_acc = pumpRunning [L185] return (retValue_acc); [L826] RET, EXPR isPumpRunning() [L826] switchedOnBeforeTS = isPumpRunning() [L72] RET __utac_acc__Specification5_spec__2() [L74] COND TRUE \read(pumpRunning) [L76] CALL lowerWaterLevel() [L349] COND TRUE waterLevel > 0 [L350] waterLevel = waterLevel - 1 [L76] RET lowerWaterLevel() [L81] COND TRUE \read(systemActive) [L83] CALL processEnvironment() [L129] int tmp ; [L132] COND TRUE \read(pumpRunning) [L134] CALL, EXPR isLowWaterLevel() [L245] int retValue_acc ; [L246] int tmp ; [L247] int tmp___0 ; [L251] CALL, EXPR isLowWaterSensorDry() [L437] int retValue_acc ; [L440] retValue_acc = waterLevel == 0 [L441] return (retValue_acc); [L251] RET, EXPR isLowWaterSensorDry() [L251] tmp = isLowWaterSensorDry() [L253] COND TRUE \read(tmp) [L254] tmp___0 = 0 [L258] retValue_acc = tmp___0 [L259] return (retValue_acc); [L134] RET, EXPR isLowWaterLevel() [L134] tmp = isLowWaterLevel() [L136] COND FALSE !(\read(tmp)) [L142] CALL processEnvironment__wrappee__highWaterSensor() [L103] int tmp ; [L106] COND FALSE !(! pumpRunning) [L121] FCALL processEnvironment__wrappee__base() [L142] RET processEnvironment__wrappee__highWaterSensor() [L83] RET processEnvironment() [L89] CALL __utac_acc__Specification5_spec__3() [L832] int tmp ; [L833] int tmp___0 ; [L837] CALL, EXPR getWaterLevel() [L414] int retValue_acc ; [L417] retValue_acc = waterLevel [L418] return (retValue_acc); [L837] RET, EXPR getWaterLevel() [L837] tmp = getWaterLevel() [L839] COND TRUE tmp != 2 [L841] CALL, EXPR isPumpRunning() [L181] int retValue_acc ; [L184] retValue_acc = pumpRunning [L185] return (retValue_acc); [L841] RET, EXPR isPumpRunning() [L841] tmp___0 = isPumpRunning() [L843] COND TRUE \read(tmp___0) [L844] COND TRUE ! switchedOnBeforeTS [L846] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product50.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 667 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 94.5s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 53.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2544 SDtfs, 7258 SDslu, 5309 SDs, 0 SdLazy, 10876 SolverSat, 2210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 518 GetRequests, 308 SyntacticMatches, 3 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1170occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 1357 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...