/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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:52:25,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:52:25,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:52:25,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:52:25,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:52:25,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:52:25,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:52:25,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:52:25,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:52:25,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:52:25,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:52:25,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:52:25,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:52:25,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:52:25,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:52:25,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:52:25,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:52:25,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:52:25,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:52:25,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:52:25,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:52:25,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:52:25,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:52:25,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:52:25,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:52:25,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:52:25,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:52:25,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:52:25,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:52:25,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:52:25,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:52:25,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:52:25,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:52:25,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:52:25,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:52:25,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:52:25,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:52:25,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:52:25,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:52:25,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:52:25,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:52:25,488 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 19:52:25,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:52:25,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:52:25,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:52:25,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:52:25,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:52:25,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:52:25,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:52:25,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:52:25,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:52:25,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:52:25,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:52:25,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:52:25,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:52:25,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:52:25,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:52:25,531 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:52:25,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:52:25,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:52:25,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:52:25,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:52:25,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:52:25,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:52:25,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:52:25,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:52:26,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:52:26,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:52:26,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:52:26,027 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:52:26,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-10-23 19:52:26,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d1e9c3c/42d64187bc3a43f2bccc0551b7b03f6f/FLAG6a1ed0f09 [2020-10-23 19:52:26,898 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:52:26,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-10-23 19:52:26,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d1e9c3c/42d64187bc3a43f2bccc0551b7b03f6f/FLAG6a1ed0f09 [2020-10-23 19:52:27,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d1e9c3c/42d64187bc3a43f2bccc0551b7b03f6f [2020-10-23 19:52:27,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:52:27,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:52:27,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:27,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:52:27,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:52:27,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3d5c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27, skipping insertion in model container [2020-10-23 19:52:27,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:52:27,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:52:27,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:27,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:52:27,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:27,883 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:52:27,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27 WrapperNode [2020-10-23 19:52:27,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:27,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:52:27,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:52:27,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:52:27,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (1/1) ... [2020-10-23 19:52:27,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:52:27,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:52:28,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:52:28,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:52:28,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (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 19:52:28,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:52:28,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:52:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:52:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:52:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:52:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:52:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:52:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:52:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:52:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:52:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:52:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:52:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:52:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:52:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:52:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:52:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:52:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:52:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:52:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:52:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:52:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:52:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:52:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:52:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:52:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:52:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:52:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:52:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:52:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:52:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:52:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:52:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:52:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:52:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:52:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:52:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:52:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:52:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:52:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:52:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:52:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:52:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:52:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:52:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:52:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:52:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:52:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:52:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:52:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:52:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:52:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:52:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:52:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:52:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:52:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:52:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:52:29,419 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:52:29,421 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:52:29,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:29 BoogieIcfgContainer [2020-10-23 19:52:29,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:52:29,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:52:29,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:52:29,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:52:29,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:52:27" (1/3) ... [2020-10-23 19:52:29,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263160c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:29, skipping insertion in model container [2020-10-23 19:52:29,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:27" (2/3) ... [2020-10-23 19:52:29,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263160c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:29, skipping insertion in model container [2020-10-23 19:52:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:29" (3/3) ... [2020-10-23 19:52:29,439 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-10-23 19:52:29,453 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:52:29,460 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:52:29,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:52:29,510 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:52:29,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:52:29,511 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:52:29,511 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:52:29,511 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:52:29,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:52:29,512 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:52:29,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:52:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-23 19:52:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:52:29,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:29,575 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 19:52:29,576 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 19:52:29,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:29,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1610887150, now seen corresponding path program 1 times [2020-10-23 19:52:29,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:29,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225162549] [2020-10-23 19:52:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:29,682 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,453 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:52:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,654 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 19:52:30,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225162549] [2020-10-23 19:52:30,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:30,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:52:30,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451161186] [2020-10-23 19:52:30,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:52:30,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:30,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:52:30,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:30,691 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-23 19:52:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:32,428 INFO L93 Difference]: Finished difference Result 473 states and 560 transitions. [2020-10-23 19:52:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:52:32,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:52:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:32,456 INFO L225 Difference]: With dead ends: 473 [2020-10-23 19:52:32,456 INFO L226 Difference]: Without dead ends: 305 [2020-10-23 19:52:32,461 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 19:52:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-23 19:52:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 255. [2020-10-23 19:52:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 19:52:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-10-23 19:52:32,626 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 154 [2020-10-23 19:52:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:32,628 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-10-23 19:52:32,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:52:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-10-23 19:52:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:52:32,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:32,633 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 19:52:32,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:52:32,634 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 19:52:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1670458702, now seen corresponding path program 1 times [2020-10-23 19:52:32,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:32,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596037045] [2020-10-23 19:52:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:32,640 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,164 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:52:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:52:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:33,271 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 19:52:33,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596037045] [2020-10-23 19:52:33,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:33,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:52:33,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222486976] [2020-10-23 19:52:33,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:52:33,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:33,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:52:33,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:52:33,274 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 5 states. [2020-10-23 19:52:34,193 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:35,321 INFO L93 Difference]: Finished difference Result 386 states and 437 transitions. [2020-10-23 19:52:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:52:35,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:52:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:35,326 INFO L225 Difference]: With dead ends: 386 [2020-10-23 19:52:35,326 INFO L226 Difference]: Without dead ends: 294 [2020-10-23 19:52:35,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:52:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-23 19:52:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 245. [2020-10-23 19:52:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-23 19:52:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 262 transitions. [2020-10-23 19:52:35,451 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 262 transitions. Word has length 155 [2020-10-23 19:52:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:35,455 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 262 transitions. [2020-10-23 19:52:35,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:52:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 262 transitions. [2020-10-23 19:52:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-23 19:52:35,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:35,460 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] [2020-10-23 19:52:35,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:52:35,461 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 19:52:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash -212614794, now seen corresponding path program 1 times [2020-10-23 19:52:35,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:35,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909815680] [2020-10-23 19:52:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:35,466 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,068 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:52:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:52:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:52:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:36,266 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 19:52:36,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909815680] [2020-10-23 19:52:36,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:36,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:52:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578088645] [2020-10-23 19:52:36,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:52:36,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:36,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:52:36,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:52:36,269 INFO L87 Difference]: Start difference. First operand 245 states and 262 transitions. Second operand 11 states. [2020-10-23 19:52:37,109 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:37,620 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:52:38,081 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:52:38,517 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:38,970 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:39,393 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:40,739 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:43,600 INFO L93 Difference]: Finished difference Result 663 states and 777 transitions. [2020-10-23 19:52:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:52:43,601 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-23 19:52:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:43,607 INFO L225 Difference]: With dead ends: 663 [2020-10-23 19:52:43,607 INFO L226 Difference]: Without dead ends: 538 [2020-10-23 19:52:43,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:52:43,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-23 19:52:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 421. [2020-10-23 19:52:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-23 19:52:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 466 transitions. [2020-10-23 19:52:43,807 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 466 transitions. Word has length 168 [2020-10-23 19:52:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:43,807 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 466 transitions. [2020-10-23 19:52:43,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:52:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 466 transitions. [2020-10-23 19:52:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:52:43,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:43,811 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] [2020-10-23 19:52:43,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:52:43,812 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 19:52:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash 528696388, now seen corresponding path program 1 times [2020-10-23 19:52:43,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:43,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241618423] [2020-10-23 19:52:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:43,816 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,241 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:52:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:52:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:52:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:44,490 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 19:52:44,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241618423] [2020-10-23 19:52:44,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:44,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:52:44,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554305430] [2020-10-23 19:52:44,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:52:44,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:44,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:52:44,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:52:44,493 INFO L87 Difference]: Start difference. First operand 421 states and 466 transitions. Second operand 10 states. [2020-10-23 19:52:45,217 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:47,040 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:47,452 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:47,922 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:48,342 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:48,728 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:49,105 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:49,485 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:50,073 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:51,572 INFO L93 Difference]: Finished difference Result 1142 states and 1384 transitions. [2020-10-23 19:52:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:52:51,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:52:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:51,580 INFO L225 Difference]: With dead ends: 1142 [2020-10-23 19:52:51,581 INFO L226 Difference]: Without dead ends: 841 [2020-10-23 19:52:51,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:52:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-10-23 19:52:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 673. [2020-10-23 19:52:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-23 19:52:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 755 transitions. [2020-10-23 19:52:51,934 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 755 transitions. Word has length 173 [2020-10-23 19:52:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:51,935 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 755 transitions. [2020-10-23 19:52:51,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:52:51,935 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 755 transitions. [2020-10-23 19:52:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:52:51,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:51,939 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] [2020-10-23 19:52:51,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:52:51,940 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 19:52:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:51,941 INFO L82 PathProgramCache]: Analyzing trace with hash 513128262, now seen corresponding path program 1 times [2020-10-23 19:52:51,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:51,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717210091] [2020-10-23 19:52:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:51,944 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,322 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:52:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:52:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:52:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,557 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 19:52:52,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717210091] [2020-10-23 19:52:52,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:52,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:52:52,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107074825] [2020-10-23 19:52:52,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:52:52,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:52,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:52:52,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:52:52,560 INFO L87 Difference]: Start difference. First operand 673 states and 755 transitions. Second operand 11 states. [2020-10-23 19:52:53,248 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:55,032 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:55,440 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:55,885 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:56,339 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:56,746 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:57,632 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:58,004 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:58,538 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:00,039 INFO L93 Difference]: Finished difference Result 1780 states and 2194 transitions. [2020-10-23 19:53:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:53:00,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-10-23 19:53:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:00,050 INFO L225 Difference]: With dead ends: 1780 [2020-10-23 19:53:00,050 INFO L226 Difference]: Without dead ends: 1227 [2020-10-23 19:53:00,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:53:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-10-23 19:53:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 939. [2020-10-23 19:53:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-23 19:53:00,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1061 transitions. [2020-10-23 19:53:00,506 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1061 transitions. Word has length 178 [2020-10-23 19:53:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:00,507 INFO L481 AbstractCegarLoop]: Abstraction has 939 states and 1061 transitions. [2020-10-23 19:53:00,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:53:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1061 transitions. [2020-10-23 19:53:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:53:00,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:00,515 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 19:53:00,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:53:00,516 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 19:53:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:00,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1210516897, now seen corresponding path program 1 times [2020-10-23 19:53:00,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:00,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726057870] [2020-10-23 19:53:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:00,520 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,899 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:53:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:53:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:53:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:53:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:01,109 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 19:53:01,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726057870] [2020-10-23 19:53:01,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:01,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 19:53:01,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160609144] [2020-10-23 19:53:01,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 19:53:01,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:01,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 19:53:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 19:53:01,112 INFO L87 Difference]: Start difference. First operand 939 states and 1061 transitions. Second operand 12 states. [2020-10-23 19:53:02,980 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:03,382 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:03,814 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:53:04,235 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:04,697 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:05,067 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:07,549 INFO L93 Difference]: Finished difference Result 2405 states and 3014 transitions. [2020-10-23 19:53:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 19:53:07,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 206 [2020-10-23 19:53:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:07,561 INFO L225 Difference]: With dead ends: 2405 [2020-10-23 19:53:07,562 INFO L226 Difference]: Without dead ends: 1586 [2020-10-23 19:53:07,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-10-23 19:53:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-10-23 19:53:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 977. [2020-10-23 19:53:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-23 19:53:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1099 transitions. [2020-10-23 19:53:08,012 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1099 transitions. Word has length 206 [2020-10-23 19:53:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:08,012 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 1099 transitions. [2020-10-23 19:53:08,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 19:53:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1099 transitions. [2020-10-23 19:53:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:53:08,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:08,017 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 19:53:08,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:53:08,018 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 19:53:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:08,018 INFO L82 PathProgramCache]: Analyzing trace with hash 236646721, now seen corresponding path program 1 times [2020-10-23 19:53:08,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:08,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701064802] [2020-10-23 19:53:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:08,022 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,416 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:53:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:53:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:53:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:53:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:08,671 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 19:53:08,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701064802] [2020-10-23 19:53:08,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:08,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 19:53:08,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993710834] [2020-10-23 19:53:08,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 19:53:08,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:08,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 19:53:08,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:53:08,693 INFO L87 Difference]: Start difference. First operand 977 states and 1099 transitions. Second operand 15 states. [2020-10-23 19:53:09,511 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:09,907 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:10,294 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:10,682 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:11,068 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:12,347 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:12,744 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:13,164 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:13,617 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:14,000 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:16,174 INFO L93 Difference]: Finished difference Result 2487 states and 3152 transitions. [2020-10-23 19:53:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 19:53:16,174 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 206 [2020-10-23 19:53:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:16,187 INFO L225 Difference]: With dead ends: 2487 [2020-10-23 19:53:16,187 INFO L226 Difference]: Without dead ends: 1630 [2020-10-23 19:53:16,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 19:53:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-10-23 19:53:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1001. [2020-10-23 19:53:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-23 19:53:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1123 transitions. [2020-10-23 19:53:16,712 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1123 transitions. Word has length 206 [2020-10-23 19:53:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:16,713 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1123 transitions. [2020-10-23 19:53:16,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 19:53:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1123 transitions. [2020-10-23 19:53:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:53:16,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:16,716 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 19:53:16,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:53:16,716 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 19:53:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:16,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1403647260, now seen corresponding path program 1 times [2020-10-23 19:53:16,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:16,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578074794] [2020-10-23 19:53:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:16,720 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,110 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:53:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:53:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:53:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:53:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:17,310 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 19:53:17,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578074794] [2020-10-23 19:53:17,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:17,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:53:17,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665161586] [2020-10-23 19:53:17,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:53:17,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:17,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:53:17,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:53:17,312 INFO L87 Difference]: Start difference. First operand 1001 states and 1123 transitions. Second operand 9 states. [2020-10-23 19:53:18,031 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:18,864 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:23,383 INFO L93 Difference]: Finished difference Result 4023 states and 5141 transitions. [2020-10-23 19:53:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 19:53:23,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2020-10-23 19:53:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:23,406 INFO L225 Difference]: With dead ends: 4023 [2020-10-23 19:53:23,406 INFO L226 Difference]: Without dead ends: 3142 [2020-10-23 19:53:23,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 19:53:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2020-10-23 19:53:24,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 2153. [2020-10-23 19:53:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-10-23 19:53:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2449 transitions. [2020-10-23 19:53:24,623 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2449 transitions. Word has length 206 [2020-10-23 19:53:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:24,624 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 2449 transitions. [2020-10-23 19:53:24,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:53:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2449 transitions. [2020-10-23 19:53:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:53:24,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:24,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:24,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:53:24,629 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 19:53:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash 924215721, now seen corresponding path program 1 times [2020-10-23 19:53:24,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:24,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782469633] [2020-10-23 19:53:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:24,633 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,076 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:25,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:53:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:53:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:53:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-23 19:53:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:53:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:53:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:25,234 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 19:53:25,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782469633] [2020-10-23 19:53:25,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:25,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:53:25,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957137034] [2020-10-23 19:53:25,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:53:25,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:53:25,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:53:25,237 INFO L87 Difference]: Start difference. First operand 2153 states and 2449 transitions. Second operand 9 states. [2020-10-23 19:53:26,028 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:32,656 INFO L93 Difference]: Finished difference Result 4989 states and 6480 transitions. [2020-10-23 19:53:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-23 19:53:32,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-10-23 19:53:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:32,690 INFO L225 Difference]: With dead ends: 4989 [2020-10-23 19:53:32,690 INFO L226 Difference]: Without dead ends: 4985 [2020-10-23 19:53:32,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 19:53:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-10-23 19:53:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 3382. [2020-10-23 19:53:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2020-10-23 19:53:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 3935 transitions. [2020-10-23 19:53:34,023 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 3935 transitions. Word has length 211 [2020-10-23 19:53:34,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:34,024 INFO L481 AbstractCegarLoop]: Abstraction has 3382 states and 3935 transitions. [2020-10-23 19:53:34,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:53:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 3935 transitions. [2020-10-23 19:53:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-23 19:53:34,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:34,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:34,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:53:34,035 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 19:53:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash 570363918, now seen corresponding path program 1 times [2020-10-23 19:53:34,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:34,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688198155] [2020-10-23 19:53:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:34,467 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:53:34,650 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:53:35,145 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:53:35,288 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:53:35,718 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:53:35,880 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:53:36,239 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:53:36,355 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:53:36,699 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:53:36,817 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:53:37,124 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:53:37,235 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:53:37,625 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:53:37,773 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:53:38,196 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:53:38,347 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:53:38,780 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:53:38,929 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:53:39,354 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:53:39,498 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:53:39,886 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:53:40,002 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:53:40,362 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2020-10-23 19:53:40,486 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:53:40,817 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:53:40,925 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:53:41,263 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-23 19:53:41,375 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 19:53:42,154 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:42,890 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:43,631 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:44,371 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:45,075 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:45,793 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:46,476 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:47,165 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:53:47,168 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:53:47,853 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:53:48,565 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:53:49,260 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:53:49,967 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:53:49,971 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:53:50,702 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:51,413 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:52,132 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:52,878 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:53,609 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:54,309 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:55,061 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:55,779 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:53:55,783 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:53:56,475 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:53:57,173 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:53:57,908 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:53:58,604 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:53:58,609 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:53:59,331 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:54:00,047 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:54:00,739 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:54:01,399 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:54:01,403 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:02,117 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:54:02,803 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:54:03,491 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:54:04,217 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:54:04,221 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:04,958 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:54:05,675 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178 [2020-10-23 19:54:06,433 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:54:07,149 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178 [2020-10-23 19:54:07,846 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:54:08,532 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:54:09,211 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:54:09,894 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:54:09,897 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:10,624 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:11,319 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:12,010 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:12,693 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:13,401 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:54:14,112 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:14,861 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:54:15,575 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:15,579 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:16,321 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:17,074 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:54:17,766 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:18,461 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:54:19,178 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:19,910 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:20,610 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:21,325 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:54:21,328 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:22,056 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:22,780 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:23,488 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:24,235 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:24,994 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:25,722 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:26,479 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:27,196 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:54:27,199 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:27,896 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:54:28,617 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:54:29,308 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:54:30,013 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:54:30,016 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:30,700 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:54:31,380 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2020-10-23 19:54:32,070 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2020-10-23 19:54:32,799 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:54:32,802 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:33,494 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:54:34,189 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:54:34,900 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:54:35,600 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:54:35,604 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:36,302 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2020-10-23 19:54:37,025 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2020-10-23 19:54:37,712 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:54:38,397 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:54:38,400 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:54:38,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:54:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:54:39,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:54:39,318 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:54:39,319 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:54:39,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:54:39,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:54:39 BoogieIcfgContainer [2020-10-23 19:54:39,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:54:39,379 INFO L168 Benchmark]: Toolchain (without parser) took 132171.47 ms. Allocated memory was 164.6 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 140.5 MB in the beginning and 821.3 MB in the end (delta: -680.8 MB). Peak memory consumption was 415.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:39,381 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.5 MB in the beginning and 103.4 MB in the end (delta: 73.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:54:39,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.06 ms. Allocated memory is still 164.6 MB. Free memory was 139.9 MB in the beginning and 119.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:39,382 INFO L168 Benchmark]: Boogie Preprocessor took 107.03 ms. Allocated memory is still 164.6 MB. Free memory was 119.1 MB in the beginning and 115.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:39,383 INFO L168 Benchmark]: RCFGBuilder took 1428.67 ms. Allocated memory is still 164.6 MB. Free memory was 115.1 MB in the beginning and 92.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:39,383 INFO L168 Benchmark]: TraceAbstraction took 129947.77 ms. Allocated memory was 164.6 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 92.0 MB in the beginning and 821.3 MB in the end (delta: -729.3 MB). Peak memory consumption was 365.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:54:39,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.5 MB in the beginning and 103.4 MB in the end (delta: 73.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 666.06 ms. Allocated memory is still 164.6 MB. Free memory was 139.9 MB in the beginning and 119.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 107.03 ms. Allocated memory is still 164.6 MB. Free memory was 119.1 MB in the beginning and 115.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1428.67 ms. Allocated memory is still 164.6 MB. Free memory was 115.1 MB in the beginning and 92.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 129947.77 ms. Allocated memory was 164.6 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 92.0 MB in the beginning and 821.3 MB in the end (delta: -729.3 MB). Peak memory consumption was 365.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int cleanupTimeShifts = 4; [L653] int pumpRunning = 0; [L654] int systemActive = 1; [L907] int methAndRunningLastTime ; [L625] int retValue_acc ; [L626] int tmp ; [L630] FCALL select_helpers() [L631] FCALL select_features() [L632] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L632] RET, EXPR valid_product() [L632] tmp = valid_product() [L634] COND TRUE \read(tmp) [L636] FCALL setup() [L637] CALL runTest() [L618] CALL __utac_acc__Specification2_spec__1() [L912] methAndRunningLastTime = 0 [L618] RET __utac_acc__Specification2_spec__1() [L619] CALL test() [L830] int splverifierCounter ; [L831] int tmp ; [L832] int tmp___0 ; [L833] int tmp___1 ; [L834] int tmp___2 ; [L837] splverifierCounter = 0 [L839] COND TRUE 1 [L841] COND TRUE splverifierCounter < 4 [L847] tmp = __VERIFIER_nondet_int() [L849] COND TRUE \read(tmp) [L851] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L851] RET waterRise() [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND TRUE \read(tmp___0) [L861] CALL changeMethaneLevel() [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 [L861] RET changeMethaneLevel() [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L871] CALL startSystem() [L824] systemActive = 1 [L871] RET startSystem() [L886] CALL timeShift() [L661] COND FALSE !(\read(pumpRunning)) [L668] COND TRUE \read(systemActive) [L670] CALL processEnvironment() [L690] int tmp ; [L693] COND TRUE ! pumpRunning [L695] CALL, EXPR isHighWaterLevel() [L787] int retValue_acc ; [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L793] RET, EXPR isHighWaterSensorDry() [L793] tmp = isHighWaterSensorDry() [L795] COND FALSE !(\read(tmp)) [L798] tmp___0 = 1 [L800] retValue_acc = tmp___0 [L801] return (retValue_acc); [L695] RET, EXPR isHighWaterLevel() [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L699] CALL activatePump() [L718] pumpRunning = 1 [L699] RET activatePump() [L670] RET processEnvironment() [L676] CALL __utac_acc__Specification2_spec__2() [L917] int tmp ; [L918] int tmp___0 ; [L922] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L922] RET, EXPR isMethaneLevelCritical() [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L926] CALL, EXPR isPumpRunning() [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); [L926] RET, EXPR isPumpRunning() [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) [L929] COND FALSE !(\read(methAndRunningLastTime)) [L934] methAndRunningLastTime = 1 [L676] RET __utac_acc__Specification2_spec__2() [L886] RET timeShift() [L839] COND TRUE 1 [L841] COND TRUE splverifierCounter < 4 [L847] tmp = __VERIFIER_nondet_int() [L849] COND FALSE !(\read(tmp)) [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND FALSE !(\read(tmp___0)) [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L871] CALL startSystem() [L824] systemActive = 1 [L871] RET startSystem() [L886] CALL timeShift() [L661] COND TRUE \read(pumpRunning) [L663] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L663] RET lowerWaterLevel() [L668] COND TRUE \read(systemActive) [L670] CALL processEnvironment() [L690] int tmp ; [L693] COND FALSE !(! pumpRunning) [L708] FCALL processEnvironment__wrappee__base() [L670] RET processEnvironment() [L676] CALL __utac_acc__Specification2_spec__2() [L917] int tmp ; [L918] int tmp___0 ; [L922] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L922] RET, EXPR isMethaneLevelCritical() [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L926] CALL, EXPR isPumpRunning() [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); [L926] RET, EXPR isPumpRunning() [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) [L929] COND TRUE \read(methAndRunningLastTime) [L931] CALL __automaton_fail() [L902] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product36.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 638 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 129.8s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 53.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2209 SDtfs, 8073 SDslu, 5164 SDs, 0 SdLazy, 10154 SolverSat, 2825 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3382occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 4502 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...