/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:49:16,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:49:16,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:49:16,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:49:16,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:49:16,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:49:16,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:49:16,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:49:16,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:49:16,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:49:16,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:49:16,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:49:16,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:49:16,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:49:16,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:49:16,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:49:16,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:49:16,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:49:16,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:49:16,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:49:16,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:49:16,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:49:16,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:49:16,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:49:16,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:49:16,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:49:16,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:49:16,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:49:16,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:49:16,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:49:16,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:49:16,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:49:16,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:49:16,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:49:16,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:49:16,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:49:16,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:49:16,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:49:16,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:49:16,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:49:16,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:49:16,998 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 19:49:17,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:49:17,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:49:17,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:49:17,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:49:17,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:49:17,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:49:17,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:49:17,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:49:17,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:49:17,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:49:17,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:49:17,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:49:17,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:49:17,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:49:17,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:49:17,016 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:49:17,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:49:17,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:49:17,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:49:17,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:49:17,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:49:17,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:49:17,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:49:17,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:49:17,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:49:17,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:49:17,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:49:17,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:49:17,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-10-23 19:49:17,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9186988/565b7be5e3f8442f87b7d96264b4f68e/FLAGae2b89322 [2020-10-23 19:49:18,305 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:49:18,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-10-23 19:49:18,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9186988/565b7be5e3f8442f87b7d96264b4f68e/FLAGae2b89322 [2020-10-23 19:49:18,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9186988/565b7be5e3f8442f87b7d96264b4f68e [2020-10-23 19:49:18,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:49:18,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:49:18,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:49:18,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:49:18,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:49:18,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:49:18" (1/1) ... [2020-10-23 19:49:18,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ba5d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:18, skipping insertion in model container [2020-10-23 19:49:18,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:49:18" (1/1) ... [2020-10-23 19:49:18,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:49:18,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:49:18,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:49:19,016 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:49:19,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:49:19,226 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:49:19,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19 WrapperNode [2020-10-23 19:49:19,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:49:19,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:49:19,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:49:19,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:49:19,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (1/1) ... [2020-10-23 19:49:19,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:49:19,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:49:19,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:49:19,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:49:19,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (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 19:49:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:49:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:49:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:49:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:49:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:49:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:49:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:49:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:49:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:49:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:49:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:49:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:49:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:49:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:49:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:49:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:49:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:49:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:49:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:49:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:49:19,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:49:19,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:49:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:49:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:49:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:49:19,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:49:19,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:49:19,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:49:19,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:49:19,511 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:49:19,511 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:49:19,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:49:19,512 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:49:19,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:49:19,512 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:49:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:49:19,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:49:19,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:49:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:49:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:49:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:49:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:49:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:49:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:49:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:49:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:49:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:49:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:49:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:49:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:49:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:49:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:49:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:49:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:49:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:49:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:49:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:49:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:49:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:49:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:49:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:49:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:49:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:49:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:49:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:49:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:49:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:49:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:49:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:49:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:49:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:49:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:49:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:49:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:49:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:49:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:49:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:49:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:49:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:49:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:49:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:49:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:49:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:49:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:49:20,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:49:20,940 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:49:20,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:49:20 BoogieIcfgContainer [2020-10-23 19:49:20,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:49:20,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:49:20,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:49:20,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:49:20,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:49:18" (1/3) ... [2020-10-23 19:49:20,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182e9cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:49:20, skipping insertion in model container [2020-10-23 19:49:20,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:19" (2/3) ... [2020-10-23 19:49:20,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182e9cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:49:20, skipping insertion in model container [2020-10-23 19:49:20,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:49:20" (3/3) ... [2020-10-23 19:49:20,960 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-10-23 19:49:20,973 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:49:20,980 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:49:20,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:49:21,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:49:21,027 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:49:21,028 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:49:21,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:49:21,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:49:21,028 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:49:21,028 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:49:21,028 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:49:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-23 19:49:21,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:49:21,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:21,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:21,104 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 19:49:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 986482567, now seen corresponding path program 1 times [2020-10-23 19:49:21,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:21,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244217253] [2020-10-23 19:49:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:21,210 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,074 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:22,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:49:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:22,277 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 19:49:22,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244217253] [2020-10-23 19:49:22,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:22,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:49:22,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156465878] [2020-10-23 19:49:22,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:49:22,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:22,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:49:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:49:22,305 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 3 states. [2020-10-23 19:49:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:24,328 INFO L93 Difference]: Finished difference Result 570 states and 678 transitions. [2020-10-23 19:49:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:49:24,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:49:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:24,348 INFO L225 Difference]: With dead ends: 570 [2020-10-23 19:49:24,349 INFO L226 Difference]: Without dead ends: 346 [2020-10-23 19:49:24,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:49:24,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-23 19:49:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 300. [2020-10-23 19:49:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-23 19:49:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 329 transitions. [2020-10-23 19:49:24,547 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 329 transitions. Word has length 148 [2020-10-23 19:49:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:24,548 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 329 transitions. [2020-10-23 19:49:24,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:49:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 329 transitions. [2020-10-23 19:49:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:49:24,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:24,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:24,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:49:24,554 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 19:49:24,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:24,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1457861924, now seen corresponding path program 1 times [2020-10-23 19:49:24,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:24,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277568470] [2020-10-23 19:49:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:24,559 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,093 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:49:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:49:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:25,232 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 19:49:25,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277568470] [2020-10-23 19:49:25,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:25,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:49:25,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998688450] [2020-10-23 19:49:25,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:49:25,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:25,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:49:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:49:25,238 INFO L87 Difference]: Start difference. First operand 300 states and 329 transitions. Second operand 4 states. [2020-10-23 19:49:26,121 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:27,749 INFO L93 Difference]: Finished difference Result 480 states and 545 transitions. [2020-10-23 19:49:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:49:27,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:49:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:27,755 INFO L225 Difference]: With dead ends: 480 [2020-10-23 19:49:27,755 INFO L226 Difference]: Without dead ends: 329 [2020-10-23 19:49:27,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:49:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-23 19:49:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 290. [2020-10-23 19:49:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-23 19:49:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 316 transitions. [2020-10-23 19:49:27,870 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 316 transitions. Word has length 149 [2020-10-23 19:49:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:27,871 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 316 transitions. [2020-10-23 19:49:27,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:49:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 316 transitions. [2020-10-23 19:49:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 19:49:27,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:27,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:27,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:49:27,875 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 19:49:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1845904496, now seen corresponding path program 1 times [2020-10-23 19:49:27,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:27,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309166274] [2020-10-23 19:49:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:27,881 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,339 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:49:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:49:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:49:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:28,508 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 19:49:28,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309166274] [2020-10-23 19:49:28,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:28,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:49:28,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646030024] [2020-10-23 19:49:28,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:49:28,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:28,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:49:28,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:49:28,512 INFO L87 Difference]: Start difference. First operand 290 states and 316 transitions. Second operand 10 states. [2020-10-23 19:49:29,277 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:29,781 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:30,175 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:30,598 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:31,047 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:31,451 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:33,919 INFO L93 Difference]: Finished difference Result 526 states and 607 transitions. [2020-10-23 19:49:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:49:33,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 19:49:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:33,925 INFO L225 Difference]: With dead ends: 526 [2020-10-23 19:49:33,925 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 19:49:33,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:49:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 19:49:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-10-23 19:49:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-23 19:49:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 315 transitions. [2020-10-23 19:49:34,060 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 315 transitions. Word has length 162 [2020-10-23 19:49:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:34,061 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 315 transitions. [2020-10-23 19:49:34,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 315 transitions. [2020-10-23 19:49:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 19:49:34,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:34,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:34,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:49:34,065 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 19:49:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:34,066 INFO L82 PathProgramCache]: Analyzing trace with hash -621439682, now seen corresponding path program 1 times [2020-10-23 19:49:34,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:34,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171349145] [2020-10-23 19:49:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:34,070 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,452 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:49:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:49:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 19:49:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 19:49:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:34,624 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 19:49:34,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171349145] [2020-10-23 19:49:34,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:34,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:49:34,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936628893] [2020-10-23 19:49:34,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:49:34,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:34,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:49:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:49:34,627 INFO L87 Difference]: Start difference. First operand 290 states and 315 transitions. Second operand 7 states. [2020-10-23 19:49:35,339 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:37,460 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:39,127 INFO L93 Difference]: Finished difference Result 722 states and 854 transitions. [2020-10-23 19:49:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:49:39,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-23 19:49:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:39,134 INFO L225 Difference]: With dead ends: 722 [2020-10-23 19:49:39,134 INFO L226 Difference]: Without dead ends: 547 [2020-10-23 19:49:39,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:49:39,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-10-23 19:49:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 418. [2020-10-23 19:49:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-23 19:49:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 450 transitions. [2020-10-23 19:49:39,333 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 450 transitions. Word has length 180 [2020-10-23 19:49:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:39,334 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 450 transitions. [2020-10-23 19:49:39,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:49:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 450 transitions. [2020-10-23 19:49:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-23 19:49:39,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:39,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:39,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:49:39,338 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 19:49:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash -91941916, now seen corresponding path program 1 times [2020-10-23 19:49:39,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:39,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397909029] [2020-10-23 19:49:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:39,342 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,769 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:49:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:49:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 19:49:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-23 19:49:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:40,024 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 19:49:40,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397909029] [2020-10-23 19:49:40,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:40,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:49:40,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773972839] [2020-10-23 19:49:40,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:49:40,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:40,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:49:40,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:49:40,030 INFO L87 Difference]: Start difference. First operand 418 states and 450 transitions. Second operand 10 states. [2020-10-23 19:49:40,680 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:42,478 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:42,931 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:43,423 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:43,852 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:44,797 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:45,184 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:45,562 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:46,084 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:48,442 INFO L93 Difference]: Finished difference Result 1212 states and 1446 transitions. [2020-10-23 19:49:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:49:48,443 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2020-10-23 19:49:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:48,451 INFO L225 Difference]: With dead ends: 1212 [2020-10-23 19:49:48,451 INFO L226 Difference]: Without dead ends: 909 [2020-10-23 19:49:48,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:49:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-10-23 19:49:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 683. [2020-10-23 19:49:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-23 19:49:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 742 transitions. [2020-10-23 19:49:48,803 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 742 transitions. Word has length 204 [2020-10-23 19:49:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:48,804 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 742 transitions. [2020-10-23 19:49:48,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 742 transitions. [2020-10-23 19:49:48,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-23 19:49:48,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:48,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:48,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:49:48,808 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 19:49:48,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:48,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1323682138, now seen corresponding path program 1 times [2020-10-23 19:49:48,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:48,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493677925] [2020-10-23 19:49:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:48,812 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,246 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:49,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:49:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:49:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 19:49:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 19:49:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:49,485 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 19:49:49,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493677925] [2020-10-23 19:49:49,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:49,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:49:49,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320235600] [2020-10-23 19:49:49,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:49:49,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:49:49,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:49:49,487 INFO L87 Difference]: Start difference. First operand 683 states and 742 transitions. Second operand 11 states. [2020-10-23 19:49:50,187 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:52,335 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:52,749 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:53,276 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:55,275 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:55,700 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:56,095 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:56,485 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:56,907 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:57,723 INFO L93 Difference]: Finished difference Result 1045 states and 1277 transitions. [2020-10-23 19:49:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:49:57,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-10-23 19:49:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:57,733 INFO L225 Difference]: With dead ends: 1045 [2020-10-23 19:49:57,733 INFO L226 Difference]: Without dead ends: 1041 [2020-10-23 19:49:57,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-23 19:49:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-23 19:49:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 683. [2020-10-23 19:49:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-23 19:49:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 741 transitions. [2020-10-23 19:49:58,054 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 741 transitions. Word has length 209 [2020-10-23 19:49:58,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:58,055 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 741 transitions. [2020-10-23 19:49:58,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:49:58,055 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 741 transitions. [2020-10-23 19:49:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-23 19:49:58,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:58,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:58,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:49:58,060 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 19:49:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1643063397, now seen corresponding path program 1 times [2020-10-23 19:49:58,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:58,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189541854] [2020-10-23 19:49:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:58,065 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,446 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:49:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:49:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:49:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-23 19:49:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-23 19:49:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:58,704 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 19:49:58,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189541854] [2020-10-23 19:49:58,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:58,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:49:58,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945650880] [2020-10-23 19:49:58,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:49:58,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:58,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:49:58,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:49:58,707 INFO L87 Difference]: Start difference. First operand 683 states and 741 transitions. Second operand 11 states. [2020-10-23 19:50:00,355 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:50:00,777 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:50:01,231 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:50:01,659 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:02,086 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:02,471 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:05,260 INFO L93 Difference]: Finished difference Result 1623 states and 1963 transitions. [2020-10-23 19:50:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:50:05,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-10-23 19:50:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:05,274 INFO L225 Difference]: With dead ends: 1623 [2020-10-23 19:50:05,275 INFO L226 Difference]: Without dead ends: 1055 [2020-10-23 19:50:05,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:50:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-23 19:50:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 699. [2020-10-23 19:50:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-10-23 19:50:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 757 transitions. [2020-10-23 19:50:05,569 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 757 transitions. Word has length 232 [2020-10-23 19:50:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:05,570 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 757 transitions. [2020-10-23 19:50:05,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:50:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 757 transitions. [2020-10-23 19:50:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-23 19:50:05,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:05,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:05,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:50:05,577 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 19:50:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash -897740603, now seen corresponding path program 1 times [2020-10-23 19:50:05,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:05,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52524621] [2020-10-23 19:50:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:05,582 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:50:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,010 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:50:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:50:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:50:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:50:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:50:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:50:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:50:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:50:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:50:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:50:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:50:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:50:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-23 19:50:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-23 19:50:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:06,356 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 19:50:06,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52524621] [2020-10-23 19:50:06,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:50:06,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:50:06,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582620975] [2020-10-23 19:50:06,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:50:06,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:50:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:50:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:50:06,360 INFO L87 Difference]: Start difference. First operand 699 states and 757 transitions. Second operand 14 states. [2020-10-23 19:50:07,199 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:50:07,624 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:50:08,039 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:08,455 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:08,850 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:10,088 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:10,498 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:10,925 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:11,375 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:11,767 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:50:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:14,992 INFO L93 Difference]: Finished difference Result 1657 states and 1999 transitions. [2020-10-23 19:50:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:50:14,993 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2020-10-23 19:50:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:14,999 INFO L225 Difference]: With dead ends: 1657 [2020-10-23 19:50:15,000 INFO L226 Difference]: Without dead ends: 1073 [2020-10-23 19:50:15,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:50:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2020-10-23 19:50:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 711. [2020-10-23 19:50:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2020-10-23 19:50:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 769 transitions. [2020-10-23 19:50:15,342 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 769 transitions. Word has length 232 [2020-10-23 19:50:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:15,343 INFO L481 AbstractCegarLoop]: Abstraction has 711 states and 769 transitions. [2020-10-23 19:50:15,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:50:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 769 transitions. [2020-10-23 19:50:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-23 19:50:15,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:15,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:15,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:50:15,348 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 19:50:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:15,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2065728642, now seen corresponding path program 1 times [2020-10-23 19:50:15,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:15,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508530090] [2020-10-23 19:50:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:15,352 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:50:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,774 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:50:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:50:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:50:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:50:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:50:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:50:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:50:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:50:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:50:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:50:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:50:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:50:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-23 19:50:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-23 19:50:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:16,043 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 19:50:16,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508530090] [2020-10-23 19:50:16,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:50:16,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:50:16,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955209800] [2020-10-23 19:50:16,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:50:16,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:50:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:50:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:50:16,046 INFO L87 Difference]: Start difference. First operand 711 states and 769 transitions. Second operand 8 states. [2020-10-23 19:50:16,739 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:17,542 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:21,907 INFO L93 Difference]: Finished difference Result 2347 states and 2921 transitions. [2020-10-23 19:50:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 19:50:21,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-23 19:50:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:21,920 INFO L225 Difference]: With dead ends: 2347 [2020-10-23 19:50:21,921 INFO L226 Difference]: Without dead ends: 1751 [2020-10-23 19:50:21,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:50:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-10-23 19:50:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1173. [2020-10-23 19:50:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-10-23 19:50:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1309 transitions. [2020-10-23 19:50:22,533 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1309 transitions. Word has length 232 [2020-10-23 19:50:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:22,534 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1309 transitions. [2020-10-23 19:50:22,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:50:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1309 transitions. [2020-10-23 19:50:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-23 19:50:22,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:22,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:22,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:50:22,539 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 19:50:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1266642270, now seen corresponding path program 1 times [2020-10-23 19:50:22,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:22,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141880071] [2020-10-23 19:50:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:22,543 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:50:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:22,968 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:50:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:50:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:50:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:50:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:50:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:50:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:50:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:50:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:50:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:50:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:50:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:50:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:50:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:50:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:50:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 19:50:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 19:50:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:50:23,618 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 19:50:23,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141880071] [2020-10-23 19:50:23,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:50:23,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-23 19:50:23,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493232550] [2020-10-23 19:50:23,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 19:50:23,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:50:23,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 19:50:23,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:50:23,621 INFO L87 Difference]: Start difference. First operand 1173 states and 1309 transitions. Second operand 21 states. [2020-10-23 19:50:24,376 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:24,959 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:50:25,381 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:50:25,827 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:26,251 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:50:26,647 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:27,849 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:30,069 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:30,565 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:31,104 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:31,574 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:31,991 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:32,436 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:32,837 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:33,317 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:33,744 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:34,233 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:34,665 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:50:35,129 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:50:36,013 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:50:36,984 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 208 [2020-10-23 19:50:37,770 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:50:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:42,213 INFO L93 Difference]: Finished difference Result 2755 states and 3305 transitions. [2020-10-23 19:50:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 19:50:42,213 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 237 [2020-10-23 19:50:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:42,224 INFO L225 Difference]: With dead ends: 2755 [2020-10-23 19:50:42,224 INFO L226 Difference]: Without dead ends: 1697 [2020-10-23 19:50:42,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=807, Invalid=3483, Unknown=0, NotChecked=0, Total=4290 [2020-10-23 19:50:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-23 19:50:42,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1132. [2020-10-23 19:50:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-10-23 19:50:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1249 transitions. [2020-10-23 19:50:42,875 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1249 transitions. Word has length 237 [2020-10-23 19:50:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:42,876 INFO L481 AbstractCegarLoop]: Abstraction has 1132 states and 1249 transitions. [2020-10-23 19:50:42,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 19:50:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1249 transitions. [2020-10-23 19:50:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-23 19:50:42,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:42,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 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 19:50:42,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:50:42,884 INFO L429 AbstractCegarLoop]: === Iteration 11 === [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 19:50:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:42,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1215098813, now seen corresponding path program 1 times [2020-10-23 19:50:42,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:42,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614739010] [2020-10-23 19:50:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:42,920 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:50:42,925 INFO L168 Benchmark]: Toolchain (without parser) took 84369.89 ms. Allocated memory was 151.0 MB in the beginning and 704.6 MB in the end (delta: 553.6 MB). Free memory was 126.9 MB in the beginning and 507.9 MB in the end (delta: -381.1 MB). Peak memory consumption was 173.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:42,926 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:50:42,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 103.3 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:42,927 INFO L168 Benchmark]: Boogie Preprocessor took 161.39 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 131.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:42,928 INFO L168 Benchmark]: RCFGBuilder took 1557.40 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 83.1 MB in the end (delta: 48.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:42,929 INFO L168 Benchmark]: TraceAbstraction took 81974.26 ms. Allocated memory was 151.0 MB in the beginning and 704.6 MB in the end (delta: 553.6 MB). Free memory was 82.6 MB in the beginning and 507.9 MB in the end (delta: -425.3 MB). Peak memory consumption was 128.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:42,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 665.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 103.3 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 161.39 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 131.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1557.40 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 83.1 MB in the end (delta: 48.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 81974.26 ms. Allocated memory was 151.0 MB in the beginning and 704.6 MB in the end (delta: 553.6 MB). Free memory was 82.6 MB in the beginning and 507.9 MB in the end (delta: -425.3 MB). Peak memory consumption was 128.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...