/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_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:43,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:43,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:43,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:43,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:43,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:43,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:43,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:43,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:43,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:43,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:43,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:43,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:43,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:43,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:43,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:43,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:43,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:43,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:43,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:43,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:43,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:43,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:43,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:43,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:43,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:43,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:43,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:43,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:43,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:43,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:43,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:43,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:43,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:43,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:43,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:43,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:43,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:43,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:43,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:43,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:43,165 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 20:19:43,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:43,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:43,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:43,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:43,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:43,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:43,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:43,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:43,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:43,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:43,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:43,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:43,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:43,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:43,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:43,199 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:43,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:43,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:43,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:43,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:43,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:43,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:43,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:19:43,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:19:43,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:19:43,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:19:43,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:19:43,742 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:19:43,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-10-23 20:19:43,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0631c9f94/0198c407b05e4610a43bac74b961c25d/FLAG6fe09a8f3 [2020-10-23 20:19:44,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:19:44,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-10-23 20:19:44,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0631c9f94/0198c407b05e4610a43bac74b961c25d/FLAG6fe09a8f3 [2020-10-23 20:19:44,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0631c9f94/0198c407b05e4610a43bac74b961c25d [2020-10-23 20:19:44,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:19:44,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:19:44,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:44,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:19:44,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:19:44,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:44" (1/1) ... [2020-10-23 20:19:44,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddde572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:44, skipping insertion in model container [2020-10-23 20:19:44,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:44" (1/1) ... [2020-10-23 20:19:44,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:19:44,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:19:45,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:45,247 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:19:45,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:45,379 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:19:45,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45 WrapperNode [2020-10-23 20:19:45,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:45,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:19:45,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:19:45,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:19:45,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (1/1) ... [2020-10-23 20:19:45,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:19:45,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:19:45,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:19:45,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:19:45,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (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 20:19:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:19:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:19:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:19:45,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:19:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:19:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:19:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:19:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:19:45,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:19:45,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:45,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:45,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:19:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:19:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:19:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:19:45,643 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:19:45,643 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:19:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:19:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:19:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:19:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:19:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:19:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:19:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:19:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:19:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:19:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:19:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:19:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:19:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:19:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:19:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:19:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:19:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:19:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:19:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:19:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:19:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:19:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:19:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:19:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:19:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:19:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:19:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:19:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:19:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:19:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:19:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:19:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:19:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:19:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:19:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:19:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:19:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:19:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:19:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:19:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:19:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:19:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:19:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:19:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:19:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:19:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:19:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:19:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:19:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:19:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:19:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:19:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:19:47,265 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:19:47,269 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:19:47,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:47 BoogieIcfgContainer [2020-10-23 20:19:47,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:19:47,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:19:47,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:19:47,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:19:47,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:44" (1/3) ... [2020-10-23 20:19:47,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c971d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:47, skipping insertion in model container [2020-10-23 20:19:47,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:45" (2/3) ... [2020-10-23 20:19:47,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c971d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:47, skipping insertion in model container [2020-10-23 20:19:47,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:47" (3/3) ... [2020-10-23 20:19:47,284 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2020-10-23 20:19:47,299 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:19:47,306 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:19:47,319 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:19:47,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:19:47,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:19:47,339 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:19:47,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:19:47,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:19:47,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:19:47,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:19:47,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:19:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states. [2020-10-23 20:19:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:19:47,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:47,387 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 20:19:47,388 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 20:19:47,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:47,395 INFO L82 PathProgramCache]: Analyzing trace with hash 391879693, now seen corresponding path program 1 times [2020-10-23 20:19:47,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:47,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6955806] [2020-10-23 20:19:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:47,491 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,350 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:19:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:19:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,565 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 20:19:48,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6955806] [2020-10-23 20:19:48,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:48,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:19:48,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006850114] [2020-10-23 20:19:48,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:19:48,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:48,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:19:48,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:48,590 INFO L87 Difference]: Start difference. First operand 332 states. Second operand 4 states. [2020-10-23 20:19:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:50,278 INFO L93 Difference]: Finished difference Result 515 states and 602 transitions. [2020-10-23 20:19:50,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:19:50,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:19:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:50,302 INFO L225 Difference]: With dead ends: 515 [2020-10-23 20:19:50,302 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 20:19:50,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 20:19:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 278. [2020-10-23 20:19:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-23 20:19:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 301 transitions. [2020-10-23 20:19:50,536 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 301 transitions. Word has length 166 [2020-10-23 20:19:50,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:50,539 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 301 transitions. [2020-10-23 20:19:50,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:19:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 301 transitions. [2020-10-23 20:19:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:19:50,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:50,551 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 20:19:50,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:19:50,552 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 20:19:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1206183004, now seen corresponding path program 1 times [2020-10-23 20:19:50,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:50,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497741692] [2020-10-23 20:19:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:50,562 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,119 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:19:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:19:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,238 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 20:19:51,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497741692] [2020-10-23 20:19:51,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:51,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:19:51,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475760295] [2020-10-23 20:19:51,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:19:51,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:51,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:19:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:19:51,241 INFO L87 Difference]: Start difference. First operand 278 states and 301 transitions. Second operand 5 states. [2020-10-23 20:19:52,177 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:53,488 INFO L93 Difference]: Finished difference Result 437 states and 490 transitions. [2020-10-23 20:19:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:19:53,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:19:53,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:53,499 INFO L225 Difference]: With dead ends: 437 [2020-10-23 20:19:53,499 INFO L226 Difference]: Without dead ends: 313 [2020-10-23 20:19:53,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-23 20:19:53,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 268. [2020-10-23 20:19:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-23 20:19:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 288 transitions. [2020-10-23 20:19:53,613 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 288 transitions. Word has length 167 [2020-10-23 20:19:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:53,616 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 288 transitions. [2020-10-23 20:19:53,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:19:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 288 transitions. [2020-10-23 20:19:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:19:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:53,619 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 20:19:53,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:19:53,620 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 20:19:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1000524518, now seen corresponding path program 1 times [2020-10-23 20:19:53,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:53,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374531829] [2020-10-23 20:19:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:53,625 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,261 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:19:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:19:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:19:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:19:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:54,447 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 20:19:54,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374531829] [2020-10-23 20:19:54,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:54,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:19:54,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879241661] [2020-10-23 20:19:54,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:19:54,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:54,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:19:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:19:54,451 INFO L87 Difference]: Start difference. First operand 268 states and 288 transitions. Second operand 11 states. [2020-10-23 20:19:55,145 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:55,669 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:19:56,088 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:19:56,519 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:56,955 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:57,363 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:59,549 INFO L93 Difference]: Finished difference Result 484 states and 555 transitions. [2020-10-23 20:19:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:19:59,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:19:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:59,557 INFO L225 Difference]: With dead ends: 484 [2020-10-23 20:19:59,557 INFO L226 Difference]: Without dead ends: 336 [2020-10-23 20:19:59,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:19:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-23 20:19:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 268. [2020-10-23 20:19:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-23 20:19:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 287 transitions. [2020-10-23 20:19:59,677 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 287 transitions. Word has length 180 [2020-10-23 20:19:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:59,678 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 287 transitions. [2020-10-23 20:19:59,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:19:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 287 transitions. [2020-10-23 20:19:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-23 20:19:59,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:59,682 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 20:19:59,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:19:59,682 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 20:19:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash 425132564, now seen corresponding path program 1 times [2020-10-23 20:19:59,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:59,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366827876] [2020-10-23 20:19:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:59,687 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,092 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-23 20:20:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-23 20:20:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:00,293 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 20:20:00,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366827876] [2020-10-23 20:20:00,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:00,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:20:00,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034445999] [2020-10-23 20:20:00,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:20:00,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:00,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:20:00,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:20:00,301 INFO L87 Difference]: Start difference. First operand 268 states and 287 transitions. Second operand 8 states. [2020-10-23 20:20:01,014 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:03,473 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:04,506 INFO L93 Difference]: Finished difference Result 675 states and 802 transitions. [2020-10-23 20:20:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:20:04,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-23 20:20:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:04,513 INFO L225 Difference]: With dead ends: 675 [2020-10-23 20:20:04,513 INFO L226 Difference]: Without dead ends: 527 [2020-10-23 20:20:04,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:20:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-23 20:20:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 387. [2020-10-23 20:20:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-23 20:20:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 418 transitions. [2020-10-23 20:20:04,695 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 418 transitions. Word has length 193 [2020-10-23 20:20:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:04,695 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 418 transitions. [2020-10-23 20:20:04,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:20:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 418 transitions. [2020-10-23 20:20:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 20:20:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:04,700 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 20:20:04,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:04,700 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 20:20:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1700881994, now seen corresponding path program 1 times [2020-10-23 20:20:04,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:04,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571507244] [2020-10-23 20:20:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:04,705 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,117 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:05,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 20:20:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 20:20:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,383 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 20:20:05,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571507244] [2020-10-23 20:20:05,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:05,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:05,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390691273] [2020-10-23 20:20:05,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:05,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:05,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:05,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:05,385 INFO L87 Difference]: Start difference. First operand 387 states and 418 transitions. Second operand 11 states. [2020-10-23 20:20:06,125 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:07,838 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:08,266 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:08,697 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:09,112 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:09,581 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:09,999 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:12,457 INFO L93 Difference]: Finished difference Result 1089 states and 1345 transitions. [2020-10-23 20:20:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:20:12,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-10-23 20:20:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:12,466 INFO L225 Difference]: With dead ends: 1089 [2020-10-23 20:20:12,466 INFO L226 Difference]: Without dead ends: 822 [2020-10-23 20:20:12,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:20:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-23 20:20:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 582. [2020-10-23 20:20:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-23 20:20:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 641 transitions. [2020-10-23 20:20:12,749 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 641 transitions. Word has length 217 [2020-10-23 20:20:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:12,749 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 641 transitions. [2020-10-23 20:20:12,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 641 transitions. [2020-10-23 20:20:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-23 20:20:12,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:12,766 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 20:20:12,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:12,767 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 20:20:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1903591161, now seen corresponding path program 1 times [2020-10-23 20:20:12,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:12,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55565557] [2020-10-23 20:20:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:12,772 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,192 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 20:20:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 20:20:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:13,443 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 20:20:13,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55565557] [2020-10-23 20:20:13,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:13,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:13,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435859239] [2020-10-23 20:20:13,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:13,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:13,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:13,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:13,447 INFO L87 Difference]: Start difference. First operand 582 states and 641 transitions. Second operand 11 states. [2020-10-23 20:20:14,154 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:15,304 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:15,701 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:16,867 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:17,322 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:17,802 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:18,648 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:19,046 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:19,443 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:20,257 INFO L93 Difference]: Finished difference Result 1277 states and 1523 transitions. [2020-10-23 20:20:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 20:20:20,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 217 [2020-10-23 20:20:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:20,265 INFO L225 Difference]: With dead ends: 1277 [2020-10-23 20:20:20,265 INFO L226 Difference]: Without dead ends: 815 [2020-10-23 20:20:20,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-10-23 20:20:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2020-10-23 20:20:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 580. [2020-10-23 20:20:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-23 20:20:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 635 transitions. [2020-10-23 20:20:20,505 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 635 transitions. Word has length 217 [2020-10-23 20:20:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:20,506 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 635 transitions. [2020-10-23 20:20:20,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 635 transitions. [2020-10-23 20:20:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:20:20,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:20,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:20,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:20,509 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 20:20:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:20,510 INFO L82 PathProgramCache]: Analyzing trace with hash -55181825, now seen corresponding path program 1 times [2020-10-23 20:20:20,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:20,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568899664] [2020-10-23 20:20:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:20,514 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,887 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:20:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:20:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,108 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 20:20:21,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568899664] [2020-10-23 20:20:21,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:21,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:21,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501169324] [2020-10-23 20:20:21,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:21,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:21,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:21,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:21,115 INFO L87 Difference]: Start difference. First operand 580 states and 635 transitions. Second operand 11 states. [2020-10-23 20:20:22,853 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:23,250 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:23,660 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:24,067 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:24,477 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:24,850 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:26,503 INFO L93 Difference]: Finished difference Result 1281 states and 1519 transitions. [2020-10-23 20:20:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:26,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-10-23 20:20:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:26,509 INFO L225 Difference]: With dead ends: 1281 [2020-10-23 20:20:26,509 INFO L226 Difference]: Without dead ends: 821 [2020-10-23 20:20:26,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-10-23 20:20:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 596. [2020-10-23 20:20:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-10-23 20:20:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 651 transitions. [2020-10-23 20:20:26,762 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 651 transitions. Word has length 218 [2020-10-23 20:20:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:26,763 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 651 transitions. [2020-10-23 20:20:26,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 651 transitions. [2020-10-23 20:20:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:20:26,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:26,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:26,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:26,766 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 20:20:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash 358449567, now seen corresponding path program 1 times [2020-10-23 20:20:26,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:26,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644039386] [2020-10-23 20:20:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:26,771 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,184 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:20:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:20:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,460 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 20:20:27,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644039386] [2020-10-23 20:20:27,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:27,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:27,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002340290] [2020-10-23 20:20:27,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:27,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:27,462 INFO L87 Difference]: Start difference. First operand 596 states and 651 transitions. Second operand 14 states. [2020-10-23 20:20:28,256 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:28,663 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:29,049 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:29,435 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:29,809 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:31,097 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:31,474 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:31,882 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:32,301 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:32,685 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:34,464 INFO L93 Difference]: Finished difference Result 1145 states and 1346 transitions. [2020-10-23 20:20:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:34,464 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-10-23 20:20:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:34,469 INFO L225 Difference]: With dead ends: 1145 [2020-10-23 20:20:34,469 INFO L226 Difference]: Without dead ends: 669 [2020-10-23 20:20:34,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:20:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-23 20:20:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 506. [2020-10-23 20:20:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-23 20:20:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 542 transitions. [2020-10-23 20:20:34,699 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 542 transitions. Word has length 218 [2020-10-23 20:20:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:34,699 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 542 transitions. [2020-10-23 20:20:34,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 542 transitions. [2020-10-23 20:20:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-23 20:20:34,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:34,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:34,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:34,702 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 20:20:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1634082278, now seen corresponding path program 1 times [2020-10-23 20:20:34,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:34,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070664252] [2020-10-23 20:20:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:34,705 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,309 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:35,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:20:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:20:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:20:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-23 20:20:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,669 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 20:20:35,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070664252] [2020-10-23 20:20:35,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:35,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:20:35,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126251962] [2020-10-23 20:20:35,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:20:35,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:35,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:20:35,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:20:35,671 INFO L87 Difference]: Start difference. First operand 506 states and 542 transitions. Second operand 15 states. [2020-10-23 20:20:36,778 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:37,919 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:40,262 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:41,063 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:41,516 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:41,934 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:42,753 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:43,168 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:43,641 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:44,056 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:46,398 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:46,775 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:47,187 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:48,053 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:20:49,917 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:20:50,729 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:51,537 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:20:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:52,090 INFO L93 Difference]: Finished difference Result 1569 states and 1855 transitions. [2020-10-23 20:20:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-23 20:20:52,091 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2020-10-23 20:20:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:52,100 INFO L225 Difference]: With dead ends: 1569 [2020-10-23 20:20:52,100 INFO L226 Difference]: Without dead ends: 1287 [2020-10-23 20:20:52,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=754, Invalid=2906, Unknown=0, NotChecked=0, Total=3660 [2020-10-23 20:20:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2020-10-23 20:20:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1007. [2020-10-23 20:20:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-10-23 20:20:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1084 transitions. [2020-10-23 20:20:52,613 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1084 transitions. Word has length 223 [2020-10-23 20:20:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:52,614 INFO L481 AbstractCegarLoop]: Abstraction has 1007 states and 1084 transitions. [2020-10-23 20:20:52,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:20:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1084 transitions. [2020-10-23 20:20:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-23 20:20:52,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:52,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:52,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:20:52,618 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 20:20:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:52,618 INFO L82 PathProgramCache]: Analyzing trace with hash -222234881, now seen corresponding path program 1 times [2020-10-23 20:20:52,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:52,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238898956] [2020-10-23 20:20:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:53,007 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:20:53,146 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:20:53,464 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:20:53,579 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:20:53,894 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-10-23 20:20:54,298 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:20:54,684 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-23 20:20:55,064 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:20:55,431 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-23 20:20:55,846 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-23 20:20:55,951 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:20:56,246 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:20:56,656 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-10-23 20:20:56,769 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:20:57,043 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:20:57,409 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:20:57,779 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:20:58,184 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-23 20:20:58,878 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2020-10-23 20:20:59,407 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2020-10-23 20:20:59,961 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2020-10-23 20:21:00,519 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2020-10-23 20:21:00,524 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:01,093 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-23 20:21:01,638 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-23 20:21:02,203 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2020-10-23 20:21:02,775 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2020-10-23 20:21:02,781 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:03,360 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:03,919 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:04,516 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:05,098 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:05,101 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:05,964 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-23 20:21:06,835 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-23 20:21:06,850 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:07,630 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:21:08,434 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-10-23 20:21:08,447 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:09,252 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:21:10,012 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:21:10,019 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:10,787 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:21:11,545 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:21:11,554 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:12,060 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:21:12,625 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:21:13,148 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:21:13,708 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:21:13,711 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:14,495 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:21:15,293 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:21:15,300 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:15,864 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:16,446 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:17,016 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:17,583 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-23 20:21:17,587 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:18,347 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-23 20:21:19,113 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-23 20:21:19,119 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:19,878 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:21:20,641 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 212 [2020-10-23 20:21:20,646 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:21,387 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-23 20:21:22,176 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-23 20:21:22,186 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:22,765 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2020-10-23 20:21:23,335 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:21:23,898 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:21:24,452 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2020-10-23 20:21:24,455 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:24,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:24,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:25,037 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:21:25,038 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:21:25,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:21:25,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:21:25 BoogieIcfgContainer [2020-10-23 20:21:25,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:21:25,085 INFO L168 Benchmark]: Toolchain (without parser) took 100344.86 ms. Allocated memory was 152.0 MB in the beginning and 549.5 MB in the end (delta: 397.4 MB). Free memory was 128.1 MB in the beginning and 299.4 MB in the end (delta: -171.3 MB). Peak memory consumption was 226.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:25,085 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:21:25,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.53 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 105.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:25,086 INFO L168 Benchmark]: Boogie Preprocessor took 152.25 ms. Allocated memory is still 152.0 MB. Free memory was 105.3 MB in the beginning and 133.4 MB in the end (delta: -28.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:25,087 INFO L168 Benchmark]: RCFGBuilder took 1735.53 ms. Allocated memory is still 152.0 MB. Free memory was 133.4 MB in the beginning and 88.9 MB in the end (delta: 44.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:25,087 INFO L168 Benchmark]: TraceAbstraction took 97806.78 ms. Allocated memory was 152.0 MB in the beginning and 549.5 MB in the end (delta: 397.4 MB). Free memory was 88.4 MB in the beginning and 299.4 MB in the end (delta: -211.1 MB). Peak memory consumption was 185.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:25,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 631.53 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 105.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 152.25 ms. Allocated memory is still 152.0 MB. Free memory was 105.3 MB in the beginning and 133.4 MB in the end (delta: -28.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1735.53 ms. Allocated memory is still 152.0 MB. Free memory was 133.4 MB in the beginning and 88.9 MB in the end (delta: 44.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 97806.78 ms. Allocated memory was 152.0 MB in the beginning and 549.5 MB in the end (delta: 397.4 MB). Free memory was 88.4 MB in the beginning and 299.4 MB in the end (delta: -211.1 MB). Peak memory consumption was 185.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L159] int switchedOnBeforeTS ; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L578] int waterLevel = 1; [L579] int methaneLevelCritical = 0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L134] int retValue_acc ; [L135] int tmp ; [L139] FCALL select_helpers() [L140] FCALL select_features() [L141] CALL, EXPR valid_product() [L890] int retValue_acc ; [L893] retValue_acc = 1 [L894] return (retValue_acc); [L141] RET, EXPR valid_product() [L141] tmp = valid_product() [L143] COND TRUE \read(tmp) [L145] FCALL setup() [L146] CALL runTest() [L124] CALL __utac_acc__Specification5_spec__1() [L164] switchedOnBeforeTS = 0 [L124] RET __utac_acc__Specification5_spec__1() [L125] CALL test() [L900] int splverifierCounter ; [L901] int tmp ; [L902] int tmp___0 ; [L903] int tmp___1 ; [L904] int tmp___2 ; [L907] splverifierCounter = 0 [L909] COND TRUE 1 [L911] COND TRUE splverifierCounter < 4 [L917] tmp = __VERIFIER_nondet_int() [L919] COND TRUE \read(tmp) [L921] CALL waterRise() [L596] COND TRUE waterLevel < 2 [L597] waterLevel = waterLevel + 1 [L921] RET waterRise() [L927] tmp___0 = __VERIFIER_nondet_int() [L929] COND FALSE !(\read(tmp___0)) [L937] tmp___2 = __VERIFIER_nondet_int() [L939] COND TRUE \read(tmp___2) [L941] CALL startSystem() [L859] systemActive = 1 [L941] RET startSystem() [L954] CALL timeShift() [L683] CALL __utac_acc__Specification5_spec__2() [L173] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L173] RET, EXPR isPumpRunning() [L173] switchedOnBeforeTS = isPumpRunning() [L683] RET __utac_acc__Specification5_spec__2() [L685] COND FALSE !(\read(pumpRunning)) [L692] COND TRUE \read(systemActive) [L694] CALL processEnvironment() [L740] int tmp ; [L743] COND FALSE !(\read(pumpRunning)) [L758] CALL processEnvironment__wrappee__highWaterSensor() [L714] int tmp ; [L717] COND TRUE ! pumpRunning [L719] CALL, EXPR isHighWaterLevel() [L837] int retValue_acc ; [L838] int tmp ; [L839] int tmp___0 ; [L843] CALL, EXPR isHighWaterSensorDry() [L658] int retValue_acc ; [L661] COND FALSE !(waterLevel < 2) [L665] retValue_acc = 0 [L666] return (retValue_acc); [L843] RET, EXPR isHighWaterSensorDry() [L843] tmp = isHighWaterSensorDry() [L845] COND FALSE !(\read(tmp)) [L848] tmp___0 = 1 [L850] retValue_acc = tmp___0 [L851] return (retValue_acc); [L719] RET, EXPR isHighWaterLevel() [L719] tmp = isHighWaterLevel() [L721] COND TRUE \read(tmp) [L723] CALL activatePump() [L768] pumpRunning = 1 [L723] RET activatePump() [L758] RET processEnvironment__wrappee__highWaterSensor() [L694] RET processEnvironment() [L700] CALL __utac_acc__Specification5_spec__3() [L179] int tmp ; [L180] int tmp___0 ; [L184] CALL, EXPR getWaterLevel() [L649] int retValue_acc ; [L652] retValue_acc = waterLevel [L653] return (retValue_acc); [L184] RET, EXPR getWaterLevel() [L184] tmp = getWaterLevel() [L186] COND FALSE !(tmp != 2) [L700] RET __utac_acc__Specification5_spec__3() [L954] RET timeShift() [L909] COND TRUE 1 [L911] COND TRUE splverifierCounter < 4 [L917] tmp = __VERIFIER_nondet_int() [L919] COND FALSE !(\read(tmp)) [L927] tmp___0 = __VERIFIER_nondet_int() [L929] COND FALSE !(\read(tmp___0)) [L937] tmp___2 = __VERIFIER_nondet_int() [L939] COND TRUE \read(tmp___2) [L941] CALL startSystem() [L859] systemActive = 1 [L941] RET startSystem() [L954] CALL timeShift() [L683] CALL __utac_acc__Specification5_spec__2() [L173] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L173] RET, EXPR isPumpRunning() [L173] switchedOnBeforeTS = isPumpRunning() [L683] RET __utac_acc__Specification5_spec__2() [L685] COND TRUE \read(pumpRunning) [L687] CALL lowerWaterLevel() [L584] COND TRUE waterLevel > 0 [L585] waterLevel = waterLevel - 1 [L687] RET lowerWaterLevel() [L692] COND TRUE \read(systemActive) [L694] CALL processEnvironment() [L740] int tmp ; [L743] COND TRUE \read(pumpRunning) [L745] CALL, EXPR isMethaneAlarm() [L781] int retValue_acc ; [L785] CALL, EXPR isMethaneLevelCritical() [L617] int retValue_acc ; [L620] retValue_acc = methaneLevelCritical [L621] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] retValue_acc = isMethaneLevelCritical() [L787] return (retValue_acc); [L745] RET, EXPR isMethaneAlarm() [L745] tmp = isMethaneAlarm() [L747] COND FALSE !(\read(tmp)) [L753] CALL processEnvironment__wrappee__highWaterSensor() [L714] int tmp ; [L717] COND FALSE !(! pumpRunning) [L732] FCALL processEnvironment__wrappee__base() [L753] RET processEnvironment__wrappee__highWaterSensor() [L694] RET processEnvironment() [L700] CALL __utac_acc__Specification5_spec__3() [L179] int tmp ; [L180] int tmp___0 ; [L184] CALL, EXPR getWaterLevel() [L649] int retValue_acc ; [L652] retValue_acc = waterLevel [L653] return (retValue_acc); [L184] RET, EXPR getWaterLevel() [L184] tmp = getWaterLevel() [L186] COND TRUE tmp != 2 [L188] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L188] RET, EXPR isPumpRunning() [L188] tmp___0 = isPumpRunning() [L190] COND TRUE \read(tmp___0) [L191] COND TRUE ! switchedOnBeforeTS [L193] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product38.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 648 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 97.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 56.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2385 SDtfs, 7206 SDslu, 5573 SDs, 0 SdLazy, 11260 SolverSat, 2283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 511 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 30.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1007occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1442 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...