/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_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:53:34,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:53:34,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:53:34,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:53:34,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:53:34,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:53:34,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:53:34,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:53:34,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:53:34,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:53:34,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:53:34,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:53:34,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:53:34,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:53:34,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:53:34,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:53:34,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:53:34,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:53:34,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:53:34,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:53:34,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:53:34,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:53:34,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:53:34,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:53:34,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:53:34,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:53:34,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:53:34,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:53:34,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:53:34,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:53:34,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:53:34,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:53:34,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:53:34,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:53:34,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:53:34,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:53:34,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:53:34,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:53:34,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:53:34,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:53:34,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:53:34,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:53:34,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:53:34,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:53:34,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:53:34,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:53:34,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:53:34,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:53:34,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:53:34,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:53:34,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:53:34,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:53:34,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:53:34,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:53:34,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:53:34,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:53:34,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:53:34,248 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:53:34,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:53:34,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:53:34,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:53:34,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:53:34,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:53:34,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:53:34,250 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:53:34,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:53:34,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:53:34,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:53:34,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:53:34,753 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:53:34,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-10-23 19:53:34,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1ec6b69/a147ab36fe954f91aa73153b2e740b54/FLAG75663a462 [2020-10-23 19:53:35,555 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:53:35,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-10-23 19:53:35,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1ec6b69/a147ab36fe954f91aa73153b2e740b54/FLAG75663a462 [2020-10-23 19:53:35,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1ec6b69/a147ab36fe954f91aa73153b2e740b54 [2020-10-23 19:53:35,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:53:35,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:53:35,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:53:35,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:53:35,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:53:35,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:53:35" (1/1) ... [2020-10-23 19:53:35,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@834b16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:35, skipping insertion in model container [2020-10-23 19:53:35,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:53:35" (1/1) ... [2020-10-23 19:53:35,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:53:35,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:53:36,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:53:36,348 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:53:36,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:53:36,470 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:53:36,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36 WrapperNode [2020-10-23 19:53:36,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:53:36,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:53:36,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:53:36,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:53:36,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... [2020-10-23 19:53:36,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:53:36,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:53:36,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:53:36,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:53:36,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:53:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:53:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:53:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:53:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:53:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:53:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:53:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:53:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:53:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:53:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:53:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:53:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:53:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:53:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:53:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:53:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:53:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:53:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:53:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:53:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:53:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:53:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:53:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:53:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:53:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:53:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:53:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:53:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:53:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:53:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:53:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:53:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:53:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:53:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:53:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:53:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:53:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:53:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:53:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:53:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:53:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:53:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:53:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:53:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:53:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:53:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:53:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:53:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:53:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:53:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:53:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:53:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:53:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:53:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:53:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:53:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:53:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:53:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:53:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:53:37,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:53:37,853 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:53:37,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:53:37 BoogieIcfgContainer [2020-10-23 19:53:37,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:53:37,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:53:37,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:53:37,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:53:37,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:53:35" (1/3) ... [2020-10-23 19:53:37,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@991c27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:53:37, skipping insertion in model container [2020-10-23 19:53:37,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:53:36" (2/3) ... [2020-10-23 19:53:37,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@991c27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:53:37, skipping insertion in model container [2020-10-23 19:53:37,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:53:37" (3/3) ... [2020-10-23 19:53:37,866 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-10-23 19:53:37,879 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:53:37,885 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:53:37,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:53:37,925 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:53:37,925 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:53:37,926 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:53:37,926 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:53:37,926 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:53:37,926 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:53:37,926 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:53:37,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:53:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-23 19:53:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:53:37,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:37,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:37,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:37,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash 218811914, now seen corresponding path program 1 times [2020-10-23 19:53:37,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:37,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697008119] [2020-10-23 19:53:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:38,075 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,847 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:53:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:39,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697008119] [2020-10-23 19:53:39,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:39,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:53:39,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665222188] [2020-10-23 19:53:39,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:53:39,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:53:39,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:53:39,052 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-10-23 19:53:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:40,766 INFO L93 Difference]: Finished difference Result 510 states and 604 transitions. [2020-10-23 19:53:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:53:40,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:53:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:40,786 INFO L225 Difference]: With dead ends: 510 [2020-10-23 19:53:40,786 INFO L226 Difference]: Without dead ends: 323 [2020-10-23 19:53:40,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:53:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-23 19:53:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 274. [2020-10-23 19:53:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 19:53:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 299 transitions. [2020-10-23 19:53:41,025 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 299 transitions. Word has length 154 [2020-10-23 19:53:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:41,028 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 299 transitions. [2020-10-23 19:53:41,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:53:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 299 transitions. [2020-10-23 19:53:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:53:41,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:41,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:41,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:53:41,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:41,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:41,049 INFO L82 PathProgramCache]: Analyzing trace with hash -336108885, now seen corresponding path program 1 times [2020-10-23 19:53:41,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:41,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934627734] [2020-10-23 19:53:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:41,058 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,612 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:53:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:53:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:41,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934627734] [2020-10-23 19:53:41,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:41,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:53:41,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542309667] [2020-10-23 19:53:41,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:53:41,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:41,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:53:41,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:53:41,743 INFO L87 Difference]: Start difference. First operand 274 states and 299 transitions. Second operand 5 states. [2020-10-23 19:53:42,641 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:44,017 INFO L93 Difference]: Finished difference Result 436 states and 495 transitions. [2020-10-23 19:53:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:53:44,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:53:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:44,023 INFO L225 Difference]: With dead ends: 436 [2020-10-23 19:53:44,023 INFO L226 Difference]: Without dead ends: 312 [2020-10-23 19:53:44,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:53:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-23 19:53:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 264. [2020-10-23 19:53:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 19:53:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 286 transitions. [2020-10-23 19:53:44,142 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 286 transitions. Word has length 155 [2020-10-23 19:53:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:44,143 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 286 transitions. [2020-10-23 19:53:44,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:53:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 286 transitions. [2020-10-23 19:53:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 19:53:44,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:44,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:44,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:53:44,147 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:44,147 INFO L82 PathProgramCache]: Analyzing trace with hash 717493626, now seen corresponding path program 1 times [2020-10-23 19:53:44,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:44,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232248577] [2020-10-23 19:53:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:44,152 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,629 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:53:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:53:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:44,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232248577] [2020-10-23 19:53:44,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:44,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:53:44,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790400355] [2020-10-23 19:53:44,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:53:44,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:53:44,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:53:44,820 INFO L87 Difference]: Start difference. First operand 264 states and 286 transitions. Second operand 10 states. [2020-10-23 19:53:45,501 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:46,023 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:46,423 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:46,845 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:47,269 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:47,660 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:49,602 INFO L93 Difference]: Finished difference Result 456 states and 521 transitions. [2020-10-23 19:53:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:53:49,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-23 19:53:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:49,612 INFO L225 Difference]: With dead ends: 456 [2020-10-23 19:53:49,613 INFO L226 Difference]: Without dead ends: 312 [2020-10-23 19:53:49,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:53:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-23 19:53:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 264. [2020-10-23 19:53:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 19:53:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 285 transitions. [2020-10-23 19:53:49,753 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 285 transitions. Word has length 164 [2020-10-23 19:53:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:49,756 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 285 transitions. [2020-10-23 19:53:49,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:53:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 285 transitions. [2020-10-23 19:53:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-23 19:53:49,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:49,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:49,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:53:49,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:49,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash 916339974, now seen corresponding path program 1 times [2020-10-23 19:53:49,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:49,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022332564] [2020-10-23 19:53:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:49,769 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,324 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:53:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 19:53:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-23 19:53:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:50,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022332564] [2020-10-23 19:53:50,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:50,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:53:50,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893623336] [2020-10-23 19:53:50,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:53:50,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:50,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:53:50,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:53:50,514 INFO L87 Difference]: Start difference. First operand 264 states and 285 transitions. Second operand 7 states. [2020-10-23 19:53:51,208 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:53,233 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:54,470 INFO L93 Difference]: Finished difference Result 605 states and 698 transitions. [2020-10-23 19:53:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:53:54,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-23 19:53:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:54,476 INFO L225 Difference]: With dead ends: 605 [2020-10-23 19:53:54,476 INFO L226 Difference]: Without dead ends: 461 [2020-10-23 19:53:54,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:53:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-23 19:53:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 388. [2020-10-23 19:53:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-23 19:53:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 420 transitions. [2020-10-23 19:53:54,635 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 420 transitions. Word has length 177 [2020-10-23 19:53:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:54,636 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 420 transitions. [2020-10-23 19:53:54,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:53:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 420 transitions. [2020-10-23 19:53:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:53:54,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:54,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:54,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:53:54,640 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:54,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1482064141, now seen corresponding path program 1 times [2020-10-23 19:53:54,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:54,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625999438] [2020-10-23 19:53:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:54,645 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,060 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:53:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:53:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:53:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:55,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625999438] [2020-10-23 19:53:55,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:55,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:53:55,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358404800] [2020-10-23 19:53:55,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:53:55,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:55,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:53:55,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:53:55,359 INFO L87 Difference]: Start difference. First operand 388 states and 420 transitions. Second operand 10 states. [2020-10-23 19:53:56,099 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:57,507 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:57,943 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:58,380 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:58,793 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:59,260 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:59,660 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:02,150 INFO L93 Difference]: Finished difference Result 958 states and 1128 transitions. [2020-10-23 19:54:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 19:54:02,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-10-23 19:54:02,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:02,156 INFO L225 Difference]: With dead ends: 958 [2020-10-23 19:54:02,156 INFO L226 Difference]: Without dead ends: 690 [2020-10-23 19:54:02,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:54:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-23 19:54:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 586. [2020-10-23 19:54:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-23 19:54:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 646 transitions. [2020-10-23 19:54:02,385 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 646 transitions. Word has length 201 [2020-10-23 19:54:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:02,385 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 646 transitions. [2020-10-23 19:54:02,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 646 transitions. [2020-10-23 19:54:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:54:02,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:02,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:02,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:54:02,390 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2122409014, now seen corresponding path program 1 times [2020-10-23 19:54:02,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:02,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20957685] [2020-10-23 19:54:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:02,395 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,804 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:54:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:54:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:54:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:03,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20957685] [2020-10-23 19:54:03,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:03,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:03,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985255046] [2020-10-23 19:54:03,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:03,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:03,029 INFO L87 Difference]: Start difference. First operand 586 states and 646 transitions. Second operand 10 states. [2020-10-23 19:54:03,767 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:05,504 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:05,945 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:06,409 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:06,797 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:07,676 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:08,084 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:08,485 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:08,979 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:10,633 INFO L93 Difference]: Finished difference Result 1594 states and 1870 transitions. [2020-10-23 19:54:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:54:10,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-10-23 19:54:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:10,643 INFO L225 Difference]: With dead ends: 1594 [2020-10-23 19:54:10,643 INFO L226 Difference]: Without dead ends: 1128 [2020-10-23 19:54:10,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:54:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-10-23 19:54:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 975. [2020-10-23 19:54:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-23 19:54:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1081 transitions. [2020-10-23 19:54:11,040 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1081 transitions. Word has length 201 [2020-10-23 19:54:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:11,040 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1081 transitions. [2020-10-23 19:54:11,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1081 transitions. [2020-10-23 19:54:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:54:11,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:11,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:11,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:54:11,046 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:11,046 INFO L82 PathProgramCache]: Analyzing trace with hash -901661380, now seen corresponding path program 1 times [2020-10-23 19:54:11,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:11,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474316305] [2020-10-23 19:54:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:11,050 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,473 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:54:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:54:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:54:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:11,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474316305] [2020-10-23 19:54:11,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:11,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:11,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27769190] [2020-10-23 19:54:11,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:11,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:11,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:11,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:11,771 INFO L87 Difference]: Start difference. First operand 975 states and 1081 transitions. Second operand 11 states. [2020-10-23 19:54:12,481 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:14,559 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:14,938 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:15,421 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:17,007 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:17,394 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:17,814 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:18,253 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:18,668 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:19,289 INFO L93 Difference]: Finished difference Result 2105 states and 2449 transitions. [2020-10-23 19:54:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:54:19,290 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 206 [2020-10-23 19:54:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:19,300 INFO L225 Difference]: With dead ends: 2105 [2020-10-23 19:54:19,301 INFO L226 Difference]: Without dead ends: 1250 [2020-10-23 19:54:19,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:54:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-10-23 19:54:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 971. [2020-10-23 19:54:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-10-23 19:54:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1073 transitions. [2020-10-23 19:54:19,843 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1073 transitions. Word has length 206 [2020-10-23 19:54:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:19,844 INFO L481 AbstractCegarLoop]: Abstraction has 971 states and 1073 transitions. [2020-10-23 19:54:19,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:54:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1073 transitions. [2020-10-23 19:54:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-23 19:54:19,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:19,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:19,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:54:19,851 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:19,852 INFO L82 PathProgramCache]: Analyzing trace with hash 387879007, now seen corresponding path program 1 times [2020-10-23 19:54:19,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:19,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557590203] [2020-10-23 19:54:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:19,856 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,258 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:54:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:54:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:54:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:54:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:54:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:54:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:20,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557590203] [2020-10-23 19:54:20,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:20,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:20,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604691207] [2020-10-23 19:54:20,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:20,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:20,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:20,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:20,506 INFO L87 Difference]: Start difference. First operand 971 states and 1073 transitions. Second operand 11 states. [2020-10-23 19:54:22,147 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:22,586 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:23,002 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:54:23,415 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:23,816 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:24,180 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:26,302 INFO L93 Difference]: Finished difference Result 2131 states and 2518 transitions. [2020-10-23 19:54:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:54:26,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 229 [2020-10-23 19:54:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:26,311 INFO L225 Difference]: With dead ends: 2131 [2020-10-23 19:54:26,312 INFO L226 Difference]: Without dead ends: 1280 [2020-10-23 19:54:26,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:54:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-10-23 19:54:26,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1003. [2020-10-23 19:54:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-23 19:54:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1105 transitions. [2020-10-23 19:54:26,739 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1105 transitions. Word has length 229 [2020-10-23 19:54:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:26,740 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1105 transitions. [2020-10-23 19:54:26,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:54:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1105 transitions. [2020-10-23 19:54:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-23 19:54:26,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:26,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:26,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:54:26,744 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:26,745 INFO L82 PathProgramCache]: Analyzing trace with hash -386819073, now seen corresponding path program 1 times [2020-10-23 19:54:26,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:26,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40061972] [2020-10-23 19:54:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:26,749 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,154 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:54:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:54:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:54:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:54:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:54:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:54:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:27,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40061972] [2020-10-23 19:54:27,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:27,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:54:27,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596034006] [2020-10-23 19:54:27,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:54:27,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:27,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:54:27,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:54:27,500 INFO L87 Difference]: Start difference. First operand 1003 states and 1105 transitions. Second operand 14 states. [2020-10-23 19:54:28,332 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:28,748 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:29,163 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:29,579 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:29,953 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:31,060 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:31,437 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:31,820 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:32,217 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:32,592 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:34,677 INFO L93 Difference]: Finished difference Result 1892 states and 2196 transitions. [2020-10-23 19:54:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:54:34,685 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 229 [2020-10-23 19:54:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:34,694 INFO L225 Difference]: With dead ends: 1892 [2020-10-23 19:54:34,694 INFO L226 Difference]: Without dead ends: 1009 [2020-10-23 19:54:34,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:54:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-23 19:54:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 816. [2020-10-23 19:54:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-23 19:54:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 881 transitions. [2020-10-23 19:54:35,148 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 881 transitions. Word has length 229 [2020-10-23 19:54:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:35,149 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 881 transitions. [2020-10-23 19:54:35,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:54:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 881 transitions. [2020-10-23 19:54:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-23 19:54:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:35,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:35,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:54:35,153 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:35,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1102659609, now seen corresponding path program 1 times [2020-10-23 19:54:35,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:35,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272948102] [2020-10-23 19:54:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:35,157 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,606 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:35,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:54:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:54:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:54:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:54:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:54:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:54:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:54:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 19:54:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:36,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272948102] [2020-10-23 19:54:36,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:36,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-23 19:54:36,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092210041] [2020-10-23 19:54:36,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 19:54:36,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:36,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 19:54:36,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:54:36,230 INFO L87 Difference]: Start difference. First operand 816 states and 881 transitions. Second operand 21 states. [2020-10-23 19:54:37,016 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:37,613 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:38,072 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-23 19:54:38,479 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:38,897 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:39,309 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:40,489 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:42,162 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:42,629 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:43,105 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:43,614 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:44,091 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:44,537 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:44,934 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:45,374 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:45,804 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:46,330 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:46,774 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:47,265 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:48,160 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2020-10-23 19:54:49,207 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 211 [2020-10-23 19:54:50,040 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2020-10-23 19:54:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:53,283 INFO L93 Difference]: Finished difference Result 1674 states and 1890 transitions. [2020-10-23 19:54:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-23 19:54:53,285 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 234 [2020-10-23 19:54:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:53,292 INFO L225 Difference]: With dead ends: 1674 [2020-10-23 19:54:53,292 INFO L226 Difference]: Without dead ends: 978 [2020-10-23 19:54:53,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=846, Invalid=3710, Unknown=0, NotChecked=0, Total=4556 [2020-10-23 19:54:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-23 19:54:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 775. [2020-10-23 19:54:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-10-23 19:54:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 829 transitions. [2020-10-23 19:54:53,718 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 829 transitions. Word has length 234 [2020-10-23 19:54:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:53,719 INFO L481 AbstractCegarLoop]: Abstraction has 775 states and 829 transitions. [2020-10-23 19:54:53,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 19:54:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 829 transitions. [2020-10-23 19:54:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-23 19:54:53,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:53,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:53,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:54:53,724 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1865338797, now seen corresponding path program 1 times [2020-10-23 19:54:53,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:53,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000976783] [2020-10-23 19:54:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:53,756 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:54:53,761 INFO L168 Benchmark]: Toolchain (without parser) took 77877.92 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 853.5 MB). Free memory was 126.7 MB in the beginning and 784.6 MB in the end (delta: -658.0 MB). Peak memory consumption was 196.5 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:53,762 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:54:53,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.23 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 104.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:53,763 INFO L168 Benchmark]: Boogie Preprocessor took 95.28 ms. Allocated memory is still 151.0 MB. Free memory was 104.6 MB in the beginning and 100.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:53,763 INFO L168 Benchmark]: RCFGBuilder took 1288.99 ms. Allocated memory is still 151.0 MB. Free memory was 100.4 MB in the beginning and 89.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:53,764 INFO L168 Benchmark]: TraceAbstraction took 75901.48 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 853.5 MB). Free memory was 88.6 MB in the beginning and 784.6 MB in the end (delta: -696.0 MB). Peak memory consumption was 158.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:53,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 576.23 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 104.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.28 ms. Allocated memory is still 151.0 MB. Free memory was 104.6 MB in the beginning and 100.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1288.99 ms. Allocated memory is still 151.0 MB. Free memory was 100.4 MB in the beginning and 89.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 75901.48 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 853.5 MB). Free memory was 88.6 MB in the beginning and 784.6 MB in the end (delta: -696.0 MB). Peak memory consumption was 158.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...