/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_spec4_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:42:09,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:42:09,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:42:09,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:42:09,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:42:09,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:42:09,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:42:09,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:42:09,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:42:09,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:42:09,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:42:09,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:42:09,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:42:09,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:42:09,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:42:09,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:42:09,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:42:09,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:42:09,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:42:09,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:42:09,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:42:09,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:42:09,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:42:09,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:42:09,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:42:09,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:42:09,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:42:09,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:42:09,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:42:09,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:42:09,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:42:09,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:42:09,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:42:09,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:42:09,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:42:09,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:42:09,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:42:09,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:42:09,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:42:09,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:42:09,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:42:09,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:42:09,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:42:09,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:42:09,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:42:09,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:42:09,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:42:09,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:42:09,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:42:09,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:42:09,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:42:09,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:42:09,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:42:09,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:42:09,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:42:09,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:42:09,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:42:09,489 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:42:09,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:42:09,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:42:09,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:42:09,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:42:09,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:42:09,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:42:09,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:42:09,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:42:09,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:42:09,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:42:09,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:42:09,998 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:42:10,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c [2021-02-23 16:42:10,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ad7cbf5/a22bb6935ee549a9bda6ff9dfda7c682/FLAG4470dc6ff [2021-02-23 16:42:11,026 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:42:11,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c [2021-02-23 16:42:11,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ad7cbf5/a22bb6935ee549a9bda6ff9dfda7c682/FLAG4470dc6ff [2021-02-23 16:42:11,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ad7cbf5/a22bb6935ee549a9bda6ff9dfda7c682 [2021-02-23 16:42:11,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:42:11,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:42:11,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:42:11,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:42:11,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:42:11,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:11,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579a3d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11, skipping insertion in model container [2021-02-23 16:42:11,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:11,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:42:11,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:42:11,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c[14037,14050] [2021-02-23 16:42:11,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:42:11,778 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:42:11,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product20.cil.c[14037,14050] [2021-02-23 16:42:11,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:42:11,954 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:42:11,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11 WrapperNode [2021-02-23 16:42:11,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:42:11,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:42:11,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:42:11,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:42:11,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:11,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:11,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:11,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:12,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:12,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:12,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (1/1) ... [2021-02-23 16:42:12,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:42:12,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:42:12,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:42:12,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:42:12,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (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 [2021-02-23 16:42:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:42:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:42:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:42:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:42:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:42:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:42:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:42:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:42:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:42:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:42:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:42:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:42:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:42:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:42:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:42:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:42:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:42:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:42:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:42:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:42:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:42:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:42:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:42:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:42:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:42:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:42:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:42:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:42:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:42:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:42:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:42:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:42:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:42:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:42:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:42:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:42:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:42:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:42:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:42:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:42:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:42:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:42:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:42:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:42:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:42:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:42:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:42:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:42:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:42:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:42:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:42:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:42:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:42:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:42:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:42:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:42:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:42:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:42:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:42:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:42:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:42:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:42:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:42:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:42:13,585 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:42:13,585 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:42:13,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:42:13 BoogieIcfgContainer [2021-02-23 16:42:13,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:42:13,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:42:13,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:42:13,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:42:13,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:42:11" (1/3) ... [2021-02-23 16:42:13,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132896e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:42:13, skipping insertion in model container [2021-02-23 16:42:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:11" (2/3) ... [2021-02-23 16:42:13,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132896e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:42:13, skipping insertion in model container [2021-02-23 16:42:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:42:13" (3/3) ... [2021-02-23 16:42:13,602 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product20.cil.c [2021-02-23 16:42:13,610 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:42:13,618 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:42:13,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:42:13,676 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:42:13,677 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:42:13,677 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:42:13,677 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:42:13,677 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:42:13,678 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:42:13,678 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:42:13,678 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:42:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-23 16:42:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:42:13,733 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:13,735 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] [2021-02-23 16:42:13,735 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash -604275891, now seen corresponding path program 1 times [2021-02-23 16:42:13,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:13,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313520398] [2021-02-23 16:42:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:13,863 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,715 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:42:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:42:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:14,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:14,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:14,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313520398] [2021-02-23 16:42:14,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:14,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:42:14,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781358437] [2021-02-23 16:42:14,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:42:14,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:14,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:42:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:42:14,926 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-23 16:42:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:16,684 INFO L93 Difference]: Finished difference Result 442 states and 528 transitions. [2021-02-23 16:42:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:42:16,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:42:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:16,706 INFO L225 Difference]: With dead ends: 442 [2021-02-23 16:42:16,707 INFO L226 Difference]: Without dead ends: 281 [2021-02-23 16:42:16,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:42:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-23 16:42:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-23 16:42:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-23 16:42:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 258 transitions. [2021-02-23 16:42:16,891 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 258 transitions. Word has length 147 [2021-02-23 16:42:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:16,892 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 258 transitions. [2021-02-23 16:42:16,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:42:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 258 transitions. [2021-02-23 16:42:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:42:16,898 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:16,898 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] [2021-02-23 16:42:16,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:42:16,899 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1069949183, now seen corresponding path program 1 times [2021-02-23 16:42:16,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:16,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575417727] [2021-02-23 16:42:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:16,906 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:17,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,392 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:42:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:42:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:17,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:17,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:17,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575417727] [2021-02-23 16:42:17,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:17,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:42:17,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265634926] [2021-02-23 16:42:17,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:42:17,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:17,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:42:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:42:17,511 INFO L87 Difference]: Start difference. First operand 239 states and 258 transitions. Second operand 4 states. [2021-02-23 16:42:18,364 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:19,364 INFO L93 Difference]: Finished difference Result 348 states and 390 transitions. [2021-02-23 16:42:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:42:19,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:42:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:19,371 INFO L225 Difference]: With dead ends: 348 [2021-02-23 16:42:19,371 INFO L226 Difference]: Without dead ends: 264 [2021-02-23 16:42:19,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:42:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-23 16:42:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-23 16:42:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:42:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 245 transitions. [2021-02-23 16:42:19,504 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 245 transitions. Word has length 148 [2021-02-23 16:42:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:19,505 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 245 transitions. [2021-02-23 16:42:19,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:42:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 245 transitions. [2021-02-23 16:42:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:42:19,508 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:19,509 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] [2021-02-23 16:42:19,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:42:19,509 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1222276472, now seen corresponding path program 1 times [2021-02-23 16:42:19,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:19,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14527910] [2021-02-23 16:42:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:19,515 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:19,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:19,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:19,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:19,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:19,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:19,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:19,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:19,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:19,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:19,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:19,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:19,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,013 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:20,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:42:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:42:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:42:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:20,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14527910] [2021-02-23 16:42:20,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:20,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:42:20,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531887109] [2021-02-23 16:42:20,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:42:20,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:20,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:42:20,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:42:20,240 INFO L87 Difference]: Start difference. First operand 229 states and 245 transitions. Second operand 10 states. [2021-02-23 16:42:21,041 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:21,547 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:21,942 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:42:22,366 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:22,743 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:23,106 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:24,286 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:26,663 INFO L93 Difference]: Finished difference Result 608 states and 709 transitions. [2021-02-23 16:42:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:42:26,664 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:42:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:26,670 INFO L225 Difference]: With dead ends: 608 [2021-02-23 16:42:26,670 INFO L226 Difference]: Without dead ends: 494 [2021-02-23 16:42:26,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:42:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-02-23 16:42:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 403. [2021-02-23 16:42:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-23 16:42:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 449 transitions. [2021-02-23 16:42:26,916 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 449 transitions. Word has length 161 [2021-02-23 16:42:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:26,917 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 449 transitions. [2021-02-23 16:42:26,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:42:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 449 transitions. [2021-02-23 16:42:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:42:26,920 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:26,920 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] [2021-02-23 16:42:26,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:42:26,921 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1706589513, now seen corresponding path program 1 times [2021-02-23 16:42:26,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:26,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896771460] [2021-02-23 16:42:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:26,926 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:27,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:27,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:27,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:27,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:27,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:27,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:27,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:27,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:27,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:27,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,436 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:42:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:27,587 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:42:27,588 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:42:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:42:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:42:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:27,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:42:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:27,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:27,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:27,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896771460] [2021-02-23 16:42:27,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:27,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:42:27,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542409498] [2021-02-23 16:42:27,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:42:27,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:27,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:42:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:42:27,823 INFO L87 Difference]: Start difference. First operand 403 states and 449 transitions. Second operand 14 states. [2021-02-23 16:42:28,489 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:28,945 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:29,295 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:29,653 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:30,055 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:30,429 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:31,204 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:32,555 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:32,986 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:33,532 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:33,976 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:34,367 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:34,777 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:35,178 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:35,593 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:35,969 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:36,480 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:37,007 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:37,456 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:37,962 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:39,967 INFO L93 Difference]: Finished difference Result 1343 states and 1650 transitions. [2021-02-23 16:42:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:42:39,968 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:42:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:39,978 INFO L225 Difference]: With dead ends: 1343 [2021-02-23 16:42:39,979 INFO L226 Difference]: Without dead ends: 1055 [2021-02-23 16:42:39,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:42:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-02-23 16:42:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 916. [2021-02-23 16:42:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2021-02-23 16:42:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1058 transitions. [2021-02-23 16:42:40,449 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1058 transitions. Word has length 166 [2021-02-23 16:42:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:40,450 INFO L480 AbstractCegarLoop]: Abstraction has 916 states and 1058 transitions. [2021-02-23 16:42:40,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:42:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1058 transitions. [2021-02-23 16:42:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:42:40,454 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:40,455 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] [2021-02-23 16:42:40,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:42:40,455 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1905469108, now seen corresponding path program 1 times [2021-02-23 16:42:40,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:40,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724088416] [2021-02-23 16:42:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:40,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,875 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:42:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:42:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:42:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:42:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:40,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:40,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:41,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724088416] [2021-02-23 16:42:41,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:41,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:42:41,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908613771] [2021-02-23 16:42:41,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:42:41,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:41,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:42:41,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:42:41,061 INFO L87 Difference]: Start difference. First operand 916 states and 1058 transitions. Second operand 6 states. [2021-02-23 16:42:41,736 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:43,269 INFO L93 Difference]: Finished difference Result 1559 states and 1878 transitions. [2021-02-23 16:42:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:42:43,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:42:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:43,279 INFO L225 Difference]: With dead ends: 1559 [2021-02-23 16:42:43,279 INFO L226 Difference]: Without dead ends: 758 [2021-02-23 16:42:43,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:42:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-02-23 16:42:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 655. [2021-02-23 16:42:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-23 16:42:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 714 transitions. [2021-02-23 16:42:43,666 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 714 transitions. Word has length 171 [2021-02-23 16:42:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:43,666 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 714 transitions. [2021-02-23 16:42:43,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:42:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 714 transitions. [2021-02-23 16:42:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:42:43,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:43,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:42:43,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:42:43,673 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:43,673 INFO L82 PathProgramCache]: Analyzing trace with hash 485450763, now seen corresponding path program 1 times [2021-02-23 16:42:43,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:43,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615689272] [2021-02-23 16:42:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY