/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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:21:02,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:21:02,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:21:02,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:21:02,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:21:02,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:21:02,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:21:02,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:21:02,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:21:02,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:21:02,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:21:02,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:21:02,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:21:02,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:21:02,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:21:02,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:21:02,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:21:02,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:21:02,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:21:02,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:21:02,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:21:02,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:21:02,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:21:02,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:21:02,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:21:02,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:21:02,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:21:02,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:21:02,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:21:02,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:21:02,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:21:02,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:21:02,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:21:02,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:21:02,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:21:02,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:21:02,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:21:02,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:21:02,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:21:02,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:21:02,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:21:02,710 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 20:21:02,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:21:02,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:21:02,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:21:02,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:21:02,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:21:02,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:21:02,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:21:02,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:21:02,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:21:02,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:21:02,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:21:02,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:21:02,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:21:02,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:21:02,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:21:02,740 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:21:02,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:21:02,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:21:02,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:21:02,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:21:02,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:21:02,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:21:02,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:21:03,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:21:03,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:21:03,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:21:03,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:21:03,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:21:03,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-10-23 20:21:03,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5ceed20/2bfb576d924645829a77602a7ca15afb/FLAGda17f0b47 [2020-10-23 20:21:03,866 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:21:03,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-10-23 20:21:03,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5ceed20/2bfb576d924645829a77602a7ca15afb/FLAGda17f0b47 [2020-10-23 20:21:04,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5ceed20/2bfb576d924645829a77602a7ca15afb [2020-10-23 20:21:04,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:21:04,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:21:04,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:04,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:21:04,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:21:04,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d29fcf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04, skipping insertion in model container [2020-10-23 20:21:04,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:21:04,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:21:04,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:04,686 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:21:04,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:04,820 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:21:04,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04 WrapperNode [2020-10-23 20:21:04,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:04,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:21:04,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:21:04,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:21:04,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (1/1) ... [2020-10-23 20:21:04,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:21:04,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:21:04,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:21:04,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:21:04,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (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 20:21:05,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:21:05,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:21:05,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:05,052 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:21:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:21:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:21:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:21:05,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:21:05,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:21:05,055 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:21:05,055 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:21:05,055 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:21:05,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:21:05,055 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:21:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:21:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:21:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:21:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:21:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:21:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:21:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:21:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:21:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:21:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:21:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:21:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:21:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:21:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:21:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:21:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:21:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:21:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:21:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:21:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:21:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:21:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:21:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:21:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:21:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:21:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:21:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:21:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:21:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:21:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:21:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:21:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:21:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:21:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:21:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:21:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:21:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:21:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:21:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:21:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:21:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:21:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:21:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:21:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:21:06,452 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:21:06,452 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:21:06,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:06 BoogieIcfgContainer [2020-10-23 20:21:06,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:21:06,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:21:06,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:21:06,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:21:06,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:04" (1/3) ... [2020-10-23 20:21:06,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26153753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:06, skipping insertion in model container [2020-10-23 20:21:06,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:04" (2/3) ... [2020-10-23 20:21:06,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26153753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:06, skipping insertion in model container [2020-10-23 20:21:06,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:06" (3/3) ... [2020-10-23 20:21:06,469 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2020-10-23 20:21:06,479 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:21:06,485 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:21:06,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:21:06,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:21:06,521 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:21:06,521 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:21:06,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:21:06,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:21:06,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:21:06,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:21:06,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:21:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states. [2020-10-23 20:21:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:21:06,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:06,573 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 20:21:06,574 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 20:21:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash 275893102, now seen corresponding path program 1 times [2020-10-23 20:21:06,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:06,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743643855] [2020-10-23 20:21:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:06,667 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,444 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:21:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:21:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,682 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 20:21:07,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743643855] [2020-10-23 20:21:07,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:07,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:21:07,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789026116] [2020-10-23 20:21:07,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:21:07,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:07,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:21:07,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:07,710 INFO L87 Difference]: Start difference. First operand 341 states. Second operand 4 states. [2020-10-23 20:21:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:09,335 INFO L93 Difference]: Finished difference Result 535 states and 626 transitions. [2020-10-23 20:21:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:21:09,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:21:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:09,356 INFO L225 Difference]: With dead ends: 535 [2020-10-23 20:21:09,356 INFO L226 Difference]: Without dead ends: 335 [2020-10-23 20:21:09,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:09,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-23 20:21:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2020-10-23 20:21:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-23 20:21:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 312 transitions. [2020-10-23 20:21:09,591 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 312 transitions. Word has length 166 [2020-10-23 20:21:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:09,593 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 312 transitions. [2020-10-23 20:21:09,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:21:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 312 transitions. [2020-10-23 20:21:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:21:09,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:09,599 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 20:21:09,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:21:09,600 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 20:21:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1982114383, now seen corresponding path program 1 times [2020-10-23 20:21:09,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:09,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073505606] [2020-10-23 20:21:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:09,607 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,018 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:21:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:10,206 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 20:21:10,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073505606] [2020-10-23 20:21:10,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:10,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:21:10,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755431372] [2020-10-23 20:21:10,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:21:10,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:10,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:21:10,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:21:10,214 INFO L87 Difference]: Start difference. First operand 287 states and 312 transitions. Second operand 5 states. [2020-10-23 20:21:11,045 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:12,270 INFO L93 Difference]: Finished difference Result 457 states and 514 transitions. [2020-10-23 20:21:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:21:12,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:21:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:12,277 INFO L225 Difference]: With dead ends: 457 [2020-10-23 20:21:12,277 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 20:21:12,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:21:12,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 20:21:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 277. [2020-10-23 20:21:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-23 20:21:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 299 transitions. [2020-10-23 20:21:12,379 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 299 transitions. Word has length 167 [2020-10-23 20:21:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:12,380 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 299 transitions. [2020-10-23 20:21:12,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:21:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 299 transitions. [2020-10-23 20:21:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:21:12,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:12,384 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 20:21:12,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:21:12,385 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 20:21:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1106210798, now seen corresponding path program 1 times [2020-10-23 20:21:12,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:12,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38059009] [2020-10-23 20:21:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:12,390 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:12,942 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:21:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:21:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:13,163 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 20:21:13,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38059009] [2020-10-23 20:21:13,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:13,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:13,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823125229] [2020-10-23 20:21:13,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:13,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:13,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:13,167 INFO L87 Difference]: Start difference. First operand 277 states and 299 transitions. Second operand 11 states. [2020-10-23 20:21:13,768 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:14,119 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:14,450 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:21:14,755 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:15,091 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:15,398 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:17,407 INFO L93 Difference]: Finished difference Result 504 states and 579 transitions. [2020-10-23 20:21:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:21:17,408 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:21:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:17,413 INFO L225 Difference]: With dead ends: 504 [2020-10-23 20:21:17,413 INFO L226 Difference]: Without dead ends: 347 [2020-10-23 20:21:17,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:21:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-23 20:21:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 277. [2020-10-23 20:21:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-23 20:21:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 298 transitions. [2020-10-23 20:21:17,529 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 298 transitions. Word has length 180 [2020-10-23 20:21:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:17,530 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 298 transitions. [2020-10-23 20:21:17,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 298 transitions. [2020-10-23 20:21:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-23 20:21:17,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:17,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:17,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:21:17,535 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 20:21:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:17,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1649722486, now seen corresponding path program 1 times [2020-10-23 20:21:17,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:17,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839625159] [2020-10-23 20:21:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:17,540 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,904 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:18,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:18,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-23 20:21:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-23 20:21:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:18,110 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 20:21:18,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839625159] [2020-10-23 20:21:18,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:18,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:21:18,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097240820] [2020-10-23 20:21:18,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:21:18,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:18,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:21:18,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:21:18,113 INFO L87 Difference]: Start difference. First operand 277 states and 298 transitions. Second operand 8 states. [2020-10-23 20:21:18,738 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:20,942 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:21,583 INFO L93 Difference]: Finished difference Result 708 states and 838 transitions. [2020-10-23 20:21:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:21:21,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-23 20:21:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:21,589 INFO L225 Difference]: With dead ends: 708 [2020-10-23 20:21:21,589 INFO L226 Difference]: Without dead ends: 551 [2020-10-23 20:21:21,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:21:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-23 20:21:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 411. [2020-10-23 20:21:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-10-23 20:21:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 443 transitions. [2020-10-23 20:21:21,777 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 443 transitions. Word has length 193 [2020-10-23 20:21:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:21,777 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 443 transitions. [2020-10-23 20:21:21,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:21:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 443 transitions. [2020-10-23 20:21:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 20:21:21,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:21,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:21,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:21:21,782 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 20:21:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:21,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1463492993, now seen corresponding path program 1 times [2020-10-23 20:21:21,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:21,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861983947] [2020-10-23 20:21:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:21,786 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,121 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:22,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 20:21:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 20:21:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:22,379 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 20:21:22,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861983947] [2020-10-23 20:21:22,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:22,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:22,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041937117] [2020-10-23 20:21:22,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:22,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:22,383 INFO L87 Difference]: Start difference. First operand 411 states and 443 transitions. Second operand 11 states. [2020-10-23 20:21:22,987 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:24,328 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:24,661 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:24,997 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:25,300 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:25,666 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:26,008 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:28,763 INFO L93 Difference]: Finished difference Result 1161 states and 1420 transitions. [2020-10-23 20:21:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:21:28,763 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-10-23 20:21:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:28,774 INFO L225 Difference]: With dead ends: 1161 [2020-10-23 20:21:28,775 INFO L226 Difference]: Without dead ends: 870 [2020-10-23 20:21:28,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:21:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-23 20:21:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 630. [2020-10-23 20:21:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-23 20:21:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 691 transitions. [2020-10-23 20:21:29,049 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 691 transitions. Word has length 217 [2020-10-23 20:21:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:29,050 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 691 transitions. [2020-10-23 20:21:29,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 691 transitions. [2020-10-23 20:21:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 20:21:29,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:29,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:29,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:21:29,054 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 20:21:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:29,055 INFO L82 PathProgramCache]: Analyzing trace with hash 772998852, now seen corresponding path program 1 times [2020-10-23 20:21:29,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:29,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880126106] [2020-10-23 20:21:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:29,059 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,424 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 20:21:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 20:21:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:29,673 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 20:21:29,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880126106] [2020-10-23 20:21:29,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:29,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:29,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327380410] [2020-10-23 20:21:29,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:29,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:29,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:29,677 INFO L87 Difference]: Start difference. First operand 630 states and 691 transitions. Second operand 11 states. [2020-10-23 20:21:30,347 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:31,391 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:31,712 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:33,243 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:33,531 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:33,875 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:34,614 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:34,919 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:35,216 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:36,144 INFO L93 Difference]: Finished difference Result 1373 states and 1623 transitions. [2020-10-23 20:21:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 20:21:36,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-10-23 20:21:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:36,153 INFO L225 Difference]: With dead ends: 1373 [2020-10-23 20:21:36,153 INFO L226 Difference]: Without dead ends: 863 [2020-10-23 20:21:36,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-10-23 20:21:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-23 20:21:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 628. [2020-10-23 20:21:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-23 20:21:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 685 transitions. [2020-10-23 20:21:36,393 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 685 transitions. Word has length 217 [2020-10-23 20:21:36,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:36,394 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 685 transitions. [2020-10-23 20:21:36,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 685 transitions. [2020-10-23 20:21:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:21:36,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:36,399 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 20:21:36,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:21:36,399 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 20:21:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1223998311, now seen corresponding path program 1 times [2020-10-23 20:21:36,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:36,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531484234] [2020-10-23 20:21:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:36,405 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,716 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:21:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:21:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:36,976 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 20:21:36,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531484234] [2020-10-23 20:21:36,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:36,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:21:36,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476653225] [2020-10-23 20:21:36,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:21:36,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:36,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:21:36,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:21:36,985 INFO L87 Difference]: Start difference. First operand 628 states and 685 transitions. Second operand 11 states. [2020-10-23 20:21:38,610 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:38,930 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:39,267 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:21:39,595 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:39,919 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:40,216 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:41,790 INFO L93 Difference]: Finished difference Result 1381 states and 1644 transitions. [2020-10-23 20:21:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:21:41,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-10-23 20:21:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:41,797 INFO L225 Difference]: With dead ends: 1381 [2020-10-23 20:21:41,798 INFO L226 Difference]: Without dead ends: 873 [2020-10-23 20:21:41,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:21:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-10-23 20:21:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 644. [2020-10-23 20:21:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-23 20:21:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 701 transitions. [2020-10-23 20:21:42,045 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 701 transitions. Word has length 240 [2020-10-23 20:21:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:42,045 INFO L481 AbstractCegarLoop]: Abstraction has 644 states and 701 transitions. [2020-10-23 20:21:42,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:21:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 701 transitions. [2020-10-23 20:21:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:21:42,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:42,051 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 20:21:42,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:21:42,051 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 20:21:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1998696391, now seen corresponding path program 1 times [2020-10-23 20:21:42,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:42,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570985059] [2020-10-23 20:21:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:42,056 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,371 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:42,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:21:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:21:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:21:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:42,650 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 20:21:42,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570985059] [2020-10-23 20:21:42,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:42,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:21:42,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796713225] [2020-10-23 20:21:42,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:21:42,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:42,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:21:42,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:21:42,654 INFO L87 Difference]: Start difference. First operand 644 states and 701 transitions. Second operand 14 states. [2020-10-23 20:21:43,397 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:43,781 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:44,127 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:44,447 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:44,760 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:45,872 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:46,192 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:46,508 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:46,848 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:47,151 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:48,591 INFO L93 Difference]: Finished difference Result 1217 states and 1421 transitions. [2020-10-23 20:21:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:21:48,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 240 [2020-10-23 20:21:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:48,597 INFO L225 Difference]: With dead ends: 1217 [2020-10-23 20:21:48,597 INFO L226 Difference]: Without dead ends: 693 [2020-10-23 20:21:48,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:21:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-10-23 20:21:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 530. [2020-10-23 20:21:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-10-23 20:21:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 567 transitions. [2020-10-23 20:21:48,844 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 567 transitions. Word has length 240 [2020-10-23 20:21:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:48,844 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 567 transitions. [2020-10-23 20:21:48,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:21:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 567 transitions. [2020-10-23 20:21:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-23 20:21:48,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:48,848 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 20:21:48,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:21:48,848 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 20:21:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:48,849 INFO L82 PathProgramCache]: Analyzing trace with hash 103496004, now seen corresponding path program 1 times [2020-10-23 20:21:48,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:48,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529939078] [2020-10-23 20:21:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:48,853 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,273 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:49,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:21:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:21:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:21:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-23 20:21:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:49,622 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 20:21:49,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529939078] [2020-10-23 20:21:49,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:49,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:21:49,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165035201] [2020-10-23 20:21:49,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:21:49,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:21:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:21:49,625 INFO L87 Difference]: Start difference. First operand 530 states and 567 transitions. Second operand 15 states. [2020-10-23 20:21:50,506 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:21:51,399 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:53,309 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:21:53,909 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:21:54,299 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:54,616 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:55,200 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:21:55,524 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:55,883 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:56,222 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:58,551 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:58,863 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:59,177 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:59,906 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:01,479 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:22:02,076 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:02,716 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:22:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:03,613 INFO L93 Difference]: Finished difference Result 1641 states and 1930 transitions. [2020-10-23 20:22:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-23 20:22:03,614 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 245 [2020-10-23 20:22:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:03,623 INFO L225 Difference]: With dead ends: 1641 [2020-10-23 20:22:03,623 INFO L226 Difference]: Without dead ends: 1335 [2020-10-23 20:22:03,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=754, Invalid=2906, Unknown=0, NotChecked=0, Total=3660 [2020-10-23 20:22:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-23 20:22:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1055. [2020-10-23 20:22:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-10-23 20:22:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1134 transitions. [2020-10-23 20:22:04,226 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1134 transitions. Word has length 245 [2020-10-23 20:22:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:04,230 INFO L481 AbstractCegarLoop]: Abstraction has 1055 states and 1134 transitions. [2020-10-23 20:22:04,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:22:04,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1134 transitions. [2020-10-23 20:22:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-23 20:22:04,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:04,235 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 20:22:04,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:22:04,235 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash -767490643, now seen corresponding path program 1 times [2020-10-23 20:22:04,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:04,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749002646] [2020-10-23 20:22:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:04,298 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:22:04,314 INFO L168 Benchmark]: Toolchain (without parser) took 60109.66 ms. Allocated memory was 151.0 MB in the beginning and 714.1 MB in the end (delta: 563.1 MB). Free memory was 126.4 MB in the beginning and 550.6 MB in the end (delta: -424.2 MB). Peak memory consumption was 139.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:04,315 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 106.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:22:04,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.40 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 104.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:04,316 INFO L168 Benchmark]: Boogie Preprocessor took 154.55 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 131.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:04,317 INFO L168 Benchmark]: RCFGBuilder took 1480.02 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 112.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:04,320 INFO L168 Benchmark]: TraceAbstraction took 57843.02 ms. Allocated memory was 151.0 MB in the beginning and 714.1 MB in the end (delta: 563.1 MB). Free memory was 112.2 MB in the beginning and 550.6 MB in the end (delta: -438.4 MB). Peak memory consumption was 124.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:04,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 106.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 616.40 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 104.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.55 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 131.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1480.02 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 112.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57843.02 ms. Allocated memory was 151.0 MB in the beginning and 714.1 MB in the end (delta: 563.1 MB). Free memory was 112.2 MB in the beginning and 550.6 MB in the end (delta: -438.4 MB). Peak memory consumption was 124.1 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...