/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:21:23,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:21:23,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:21:23,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:21:23,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:21:23,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:21:23,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:21:23,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:21:23,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:21:23,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:21:23,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:21:23,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:21:23,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:21:23,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:21:23,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:21:23,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:21:23,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:21:23,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:21:23,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:21:23,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:21:23,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:21:23,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:21:23,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:21:23,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:21:23,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:21:23,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:21:23,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:21:23,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:21:23,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:21:23,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:21:23,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:21:23,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:21:23,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:21:23,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:21:23,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:21:23,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:21:23,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:21:23,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:21:23,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:21:23,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:21:23,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:21:23,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:21:23,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:21:23,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:21:23,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:21:23,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:21:23,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:21:23,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:21:23,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:21:23,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:21:23,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:21:23,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:21:23,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:21:23,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:21:23,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:21:23,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:21:23,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:21:23,692 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:21:23,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:21:23,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:21:23,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:21:23,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:21:23,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:21:23,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:21:23,694 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:21:24,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:21:24,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:21:24,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:21:24,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:21:24,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:21:24,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-10-23 20:21:24,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c08eae70/3b9a56a1077c491d9ee15cf1570150ac/FLAGf61c4d5f8 [2020-10-23 20:21:24,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:21:24,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-10-23 20:21:24,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c08eae70/3b9a56a1077c491d9ee15cf1570150ac/FLAGf61c4d5f8 [2020-10-23 20:21:25,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c08eae70/3b9a56a1077c491d9ee15cf1570150ac [2020-10-23 20:21:25,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:21:25,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:21:25,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:25,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:21:25,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:21:25,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52cebbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25, skipping insertion in model container [2020-10-23 20:21:25,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:21:25,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:21:25,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:25,683 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:21:25,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:25,868 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:21:25,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25 WrapperNode [2020-10-23 20:21:25,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:25,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:21:25,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:21:25,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:21:25,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... [2020-10-23 20:21:25,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:21:25,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:21:25,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:21:25,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:21:25,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:21:26,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:21:26,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:21:26,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:21:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:21:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:21:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:21:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:21:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:21:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:21:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:21:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:21:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:21:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:21:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:21:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:21:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:21:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:21:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:21:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:21:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:21:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:21:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:21:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:21:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:21:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:21:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:21:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:21:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:21:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:21:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:21:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:21:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:21:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:21:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:21:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:21:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:21:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:21:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:21:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:21:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:21:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:21:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:21:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:21:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:21:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:21:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:21:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:21:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:21:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:21:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:21:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:21:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:21:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:21:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:21:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:21:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:21:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:21:27,481 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:21:27,482 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:21:27,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:27 BoogieIcfgContainer [2020-10-23 20:21:27,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:21:27,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:21:27,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:21:27,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:21:27,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:25" (1/3) ... [2020-10-23 20:21:27,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5428ed65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:27, skipping insertion in model container [2020-10-23 20:21:27,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:25" (2/3) ... [2020-10-23 20:21:27,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5428ed65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:27, skipping insertion in model container [2020-10-23 20:21:27,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:27" (3/3) ... [2020-10-23 20:21:27,494 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2020-10-23 20:21:27,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:21:27,513 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:21:27,527 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:21:27,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:21:27,552 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:21:27,552 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:21:27,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:21:27,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:21:27,553 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:21:27,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:21:27,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:21:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-23 20:21:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:21:27,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:27,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:27,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:27,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1811795048, now seen corresponding path program 1 times [2020-10-23 20:21:27,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:27,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436594071] [2020-10-23 20:21:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:27,698 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,581 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:21:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:21:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:28,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436594071] [2020-10-23 20:21:28,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:28,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:21:28,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896978809] [2020-10-23 20:21:28,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:21:28,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:28,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:21:28,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:28,919 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-23 20:21:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:30,853 INFO L93 Difference]: Finished difference Result 550 states and 647 transitions. [2020-10-23 20:21:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:21:30,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:21:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:30,875 INFO L225 Difference]: With dead ends: 550 [2020-10-23 20:21:30,875 INFO L226 Difference]: Without dead ends: 344 [2020-10-23 20:21:30,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-23 20:21:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 293. [2020-10-23 20:21:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-23 20:21:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 320 transitions. [2020-10-23 20:21:31,061 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 320 transitions. Word has length 166 [2020-10-23 20:21:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:31,062 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 320 transitions. [2020-10-23 20:21:31,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:21:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 320 transitions. [2020-10-23 20:21:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:21:31,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:31,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:31,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:21:31,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:31,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1988391958, now seen corresponding path program 1 times [2020-10-23 20:21:31,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:31,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905508301] [2020-10-23 20:21:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:31,076 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,618 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:21:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:31,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905508301] [2020-10-23 20:21:31,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:31,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:21:31,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051538277] [2020-10-23 20:21:31,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:21:31,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:21:31,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:21:31,780 INFO L87 Difference]: Start difference. First operand 293 states and 320 transitions. Second operand 5 states. [2020-10-23 20:21:32,638 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:34,112 INFO L93 Difference]: Finished difference Result 466 states and 527 transitions. [2020-10-23 20:21:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:21:34,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:21:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:34,118 INFO L225 Difference]: With dead ends: 466 [2020-10-23 20:21:34,118 INFO L226 Difference]: Without dead ends: 333 [2020-10-23 20:21:34,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:21:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-23 20:21:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 283. [2020-10-23 20:21:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-23 20:21:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 307 transitions. [2020-10-23 20:21:34,247 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 307 transitions. Word has length 167 [2020-10-23 20:21:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:34,248 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 307 transitions. [2020-10-23 20:21:34,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:21:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 307 transitions. [2020-10-23 20:21:34,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:21:34,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:34,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:34,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:21:34,252 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:34,253 INFO L82 PathProgramCache]: Analyzing trace with hash -980151545, now seen corresponding path program 1 times [2020-10-23 20:21:34,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:34,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638612894] [2020-10-23 20:21:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:34,257 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,746 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:34,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:21:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:21:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:21:34,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638612894] [2020-10-23 20:21:34,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:34,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:34,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744991677] [2020-10-23 20:21:34,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:34,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:34,947 INFO L87 Difference]: Start difference. First operand 283 states and 307 transitions. Second operand 11 states. [2020-10-23 20:21:35,664 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:36,172 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:36,608 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:21:37,000 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:37,400 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:37,795 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:39,251 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:42,553 INFO L93 Difference]: Finished difference Result 781 states and 909 transitions. [2020-10-23 20:21:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:21:42,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:21:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:42,560 INFO L225 Difference]: With dead ends: 781 [2020-10-23 20:21:42,560 INFO L226 Difference]: Without dead ends: 618 [2020-10-23 20:21:42,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:21:42,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-23 20:21:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 513. [2020-10-23 20:21:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-23 20:21:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 577 transitions. [2020-10-23 20:21:42,825 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 577 transitions. Word has length 180 [2020-10-23 20:21:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:42,827 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 577 transitions. [2020-10-23 20:21:42,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 577 transitions. [2020-10-23 20:21:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:21:42,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:42,832 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] [2020-10-23 20:21:42,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:21:42,833 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1413789231, now seen corresponding path program 1 times [2020-10-23 20:21:42,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:42,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849910577] [2020-10-23 20:21:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:42,842 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,422 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:21:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:21:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:21:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:21:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:21:43,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849910577] [2020-10-23 20:21:43,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:43,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:43,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646010448] [2020-10-23 20:21:43,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:43,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:43,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:43,695 INFO L87 Difference]: Start difference. First operand 513 states and 577 transitions. Second operand 10 states. [2020-10-23 20:21:44,349 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:45,480 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:45,880 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:47,340 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:47,735 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:48,132 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:48,619 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:49,003 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:49,446 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:50,342 INFO L93 Difference]: Finished difference Result 1201 states and 1434 transitions. [2020-10-23 20:21:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:21:50,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:21:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:50,349 INFO L225 Difference]: With dead ends: 1201 [2020-10-23 20:21:50,349 INFO L226 Difference]: Without dead ends: 808 [2020-10-23 20:21:50,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:21:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-23 20:21:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 715. [2020-10-23 20:21:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-10-23 20:21:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 801 transitions. [2020-10-23 20:21:50,615 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 801 transitions. Word has length 185 [2020-10-23 20:21:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:50,615 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 801 transitions. [2020-10-23 20:21:50,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:21:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 801 transitions. [2020-10-23 20:21:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:21:50,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:50,621 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, 1, 1, 1] [2020-10-23 20:21:50,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:21:50,621 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:50,622 INFO L82 PathProgramCache]: Analyzing trace with hash 995654870, now seen corresponding path program 1 times [2020-10-23 20:21:50,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:50,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11245876] [2020-10-23 20:21:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:50,626 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,023 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:21:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:21:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:21:51,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11245876] [2020-10-23 20:21:51,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:51,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:51,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758618566] [2020-10-23 20:21:51,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:51,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:51,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:51,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:51,292 INFO L87 Difference]: Start difference. First operand 715 states and 801 transitions. Second operand 11 states. [2020-10-23 20:21:53,285 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:53,728 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:54,171 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:21:54,581 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:55,007 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:55,404 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:57,179 INFO L93 Difference]: Finished difference Result 1522 states and 1835 transitions. [2020-10-23 20:21:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:21:57,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-10-23 20:21:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:57,187 INFO L225 Difference]: With dead ends: 1522 [2020-10-23 20:21:57,187 INFO L226 Difference]: Without dead ends: 927 [2020-10-23 20:21:57,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:21:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-23 20:21:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 734. [2020-10-23 20:21:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-23 20:21:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 821 transitions. [2020-10-23 20:21:57,535 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 821 transitions. Word has length 240 [2020-10-23 20:21:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:57,536 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 821 transitions. [2020-10-23 20:21:57,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 821 transitions. [2020-10-23 20:21:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:21:57,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:57,540 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, 1, 1, 1] [2020-10-23 20:21:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:21:57,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:57,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:57,541 INFO L82 PathProgramCache]: Analyzing trace with hash 220956790, now seen corresponding path program 1 times [2020-10-23 20:21:57,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:57,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629408105] [2020-10-23 20:21:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:57,546 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,940 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:21:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:21:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:21:58,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629408105] [2020-10-23 20:21:58,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:58,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:21:58,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407398992] [2020-10-23 20:21:58,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:21:58,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:21:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:21:58,299 INFO L87 Difference]: Start difference. First operand 734 states and 821 transitions. Second operand 14 states. [2020-10-23 20:21:59,098 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:59,498 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:59,922 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:00,304 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:00,687 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:02,122 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:02,524 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:02,946 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:03,385 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:03,777 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:05,876 INFO L93 Difference]: Finished difference Result 1559 states and 1873 transitions. [2020-10-23 20:22:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:22:05,883 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 240 [2020-10-23 20:22:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:05,889 INFO L225 Difference]: With dead ends: 1559 [2020-10-23 20:22:05,890 INFO L226 Difference]: Without dead ends: 945 [2020-10-23 20:22:05,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:22:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-10-23 20:22:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 746. [2020-10-23 20:22:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-10-23 20:22:06,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 833 transitions. [2020-10-23 20:22:06,219 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 833 transitions. Word has length 240 [2020-10-23 20:22:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:06,219 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 833 transitions. [2020-10-23 20:22:06,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:22:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 833 transitions. [2020-10-23 20:22:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:22:06,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:06,225 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, 1, 1, 1] [2020-10-23 20:22:06,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:22:06,225 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1286383897, now seen corresponding path program 1 times [2020-10-23 20:22:06,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:06,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646155179] [2020-10-23 20:22:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:06,230 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,603 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:22:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:22:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:22:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:06,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646155179] [2020-10-23 20:22:06,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:06,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:22:06,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182760547] [2020-10-23 20:22:06,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:22:06,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:22:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:22:06,861 INFO L87 Difference]: Start difference. First operand 746 states and 833 transitions. Second operand 8 states. [2020-10-23 20:22:07,568 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:08,465 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:12,339 INFO L93 Difference]: Finished difference Result 2329 states and 2834 transitions. [2020-10-23 20:22:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 20:22:12,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-23 20:22:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:12,352 INFO L225 Difference]: With dead ends: 2329 [2020-10-23 20:22:12,352 INFO L226 Difference]: Without dead ends: 1703 [2020-10-23 20:22:12,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-23 20:22:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-23 20:22:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1434. [2020-10-23 20:22:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2020-10-23 20:22:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1630 transitions. [2020-10-23 20:22:12,896 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1630 transitions. Word has length 240 [2020-10-23 20:22:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:12,896 INFO L481 AbstractCegarLoop]: Abstraction has 1434 states and 1630 transitions. [2020-10-23 20:22:12,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:22:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1630 transitions. [2020-10-23 20:22:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-23 20:22:12,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:12,900 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:12,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:22:12,901 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:12,901 INFO L82 PathProgramCache]: Analyzing trace with hash 442691057, now seen corresponding path program 1 times [2020-10-23 20:22:12,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:12,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840163128] [2020-10-23 20:22:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:12,905 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,435 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:22:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:22:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:22:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-23 20:22:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:13,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840163128] [2020-10-23 20:22:13,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:13,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:22:13,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643048874] [2020-10-23 20:22:13,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:22:13,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:22:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:22:13,834 INFO L87 Difference]: Start difference. First operand 1434 states and 1630 transitions. Second operand 15 states. [2020-10-23 20:22:15,018 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:22:16,243 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:18,044 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:22:18,870 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:22:19,445 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:19,898 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:20,695 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:22:21,174 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:21,657 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:22,173 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:26,651 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:27,526 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:27,943 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:28,446 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:30,149 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:22:30,921 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:31,750 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:22:32,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:32,762 INFO L93 Difference]: Finished difference Result 4376 states and 5349 transitions. [2020-10-23 20:22:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-23 20:22:32,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 245 [2020-10-23 20:22:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:32,785 INFO L225 Difference]: With dead ends: 4376 [2020-10-23 20:22:32,785 INFO L226 Difference]: Without dead ends: 3343 [2020-10-23 20:22:32,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=829, Invalid=3331, Unknown=0, NotChecked=0, Total=4160 [2020-10-23 20:22:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2020-10-23 20:22:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2631. [2020-10-23 20:22:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2631 states. [2020-10-23 20:22:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 2971 transitions. [2020-10-23 20:22:34,472 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 2971 transitions. Word has length 245 [2020-10-23 20:22:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:34,473 INFO L481 AbstractCegarLoop]: Abstraction has 2631 states and 2971 transitions. [2020-10-23 20:22:34,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:22:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 2971 transitions. [2020-10-23 20:22:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-23 20:22:34,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:34,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 20:22:34,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:22:34,479 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:34,479 INFO L82 PathProgramCache]: Analyzing trace with hash -321643640, now seen corresponding path program 1 times [2020-10-23 20:22:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:34,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002003089] [2020-10-23 20:22:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:34,521 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:22:34,526 INFO L168 Benchmark]: Toolchain (without parser) took 69312.65 ms. Allocated memory was 151.0 MB in the beginning and 987.8 MB in the end (delta: 836.8 MB). Free memory was 106.1 MB in the beginning and 565.3 MB in the end (delta: -459.2 MB). Peak memory consumption was 377.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:34,527 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:22:34,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.02 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 126.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:34,528 INFO L168 Benchmark]: Boogie Preprocessor took 99.00 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 122.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:34,529 INFO L168 Benchmark]: RCFGBuilder took 1515.84 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 122.2 MB in the beginning and 95.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:34,530 INFO L168 Benchmark]: TraceAbstraction took 67037.51 ms. Allocated memory was 181.4 MB in the beginning and 987.8 MB in the end (delta: 806.4 MB). Free memory was 94.4 MB in the beginning and 565.3 MB in the end (delta: -470.9 MB). Peak memory consumption was 335.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:34,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 649.02 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 126.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.00 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 122.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1515.84 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 122.2 MB in the beginning and 95.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 67037.51 ms. Allocated memory was 181.4 MB in the beginning and 987.8 MB in the end (delta: 806.4 MB). Free memory was 94.4 MB in the beginning and 565.3 MB in the end (delta: -470.9 MB). Peak memory consumption was 335.5 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...