/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_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:10:04,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:10:04,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:10:04,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:10:04,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:10:04,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:10:04,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:10:04,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:10:04,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:10:04,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:10:04,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:10:04,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:10:04,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:10:04,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:10:04,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:10:04,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:10:04,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:10:04,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:10:04,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:10:04,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:10:04,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:10:04,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:10:04,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:10:04,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:10:04,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:10:04,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:10:04,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:10:04,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:10:04,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:10:04,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-23 16:10:04,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:10:04,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:10:04,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:10:04,962 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 16:10:04,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:10:04,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:10:04,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:10:04,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:10:04,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:10:04,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:10:04,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:10:04,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:10:04,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:10:04,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:10:04,981 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:10:04,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:10:04,981 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:10:04,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:10:04,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:10:04,982 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:10:04,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:10:04,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:10:04,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:10:04,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:10:04,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:10:04,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:10:04,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:10:05,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:10:05,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:10:05,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:10:05,381 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:10:05,382 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:10:05,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2021-02-23 16:10:05,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888a22bad/ded751a7a6ad41fabd97a540cfdf63ac/FLAG5e8cf7634 [2021-02-23 16:10:06,217 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:10:06,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2021-02-23 16:10:06,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888a22bad/ded751a7a6ad41fabd97a540cfdf63ac/FLAG5e8cf7634 [2021-02-23 16:10:06,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888a22bad/ded751a7a6ad41fabd97a540cfdf63ac [2021-02-23 16:10:06,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:10:06,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:10:06,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:06,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:10:06,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:10:06,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:06" (1/1) ... [2021-02-23 16:10:06,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659850f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:06, skipping insertion in model container [2021-02-23 16:10:06,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:06" (1/1) ... [2021-02-23 16:10:06,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:10:06,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:10:06,869 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_spec1_product50.cil.c[5930,5943] [2021-02-23 16:10:06,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:07,010 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:10:07,044 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_spec1_product50.cil.c[5930,5943] [2021-02-23 16:10:07,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:07,152 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:10:07,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07 WrapperNode [2021-02-23 16:10:07,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:07,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:10:07,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:10:07,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:10:07,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (1/1) ... [2021-02-23 16:10:07,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:10:07,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:10:07,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:10:07,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:10:07,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (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 16:10:07,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:10:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:10:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:10:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:10:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:10:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:10:07,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:10:07,497 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:10:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:10:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:10:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:10:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:10:07,499 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:10:07,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:10:07,500 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:10:07,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:10:07,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:10:07,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:10:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:10:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:10:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:10:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:10:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:10:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:10:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:10:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:10:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:10:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:10:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:10:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:10:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:10:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:10:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:10:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:10:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:10:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:10:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:10:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:10:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:10:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:10:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:10:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:10:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:10:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:10:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:10:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:10:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:10:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:10:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:10:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:10:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:10:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:10:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:10:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:10:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:10:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:10:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:10:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:10:09,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:10:09,212 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:10:09,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:09 BoogieIcfgContainer [2021-02-23 16:10:09,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:10:09,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:10:09,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:10:09,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:10:09,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:10:06" (1/3) ... [2021-02-23 16:10:09,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c62fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:09, skipping insertion in model container [2021-02-23 16:10:09,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:07" (2/3) ... [2021-02-23 16:10:09,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c62fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:09, skipping insertion in model container [2021-02-23 16:10:09,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:09" (3/3) ... [2021-02-23 16:10:09,245 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2021-02-23 16:10:09,261 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:10:09,296 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:10:09,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:10:09,355 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:10:09,355 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:10:09,355 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:10:09,355 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:10:09,355 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:10:09,356 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:10:09,356 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:10:09,356 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:10:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2021-02-23 16:10:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:10:09,405 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:09,406 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 16:10:09,407 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1752329087, now seen corresponding path program 1 times [2021-02-23 16:10:09,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:09,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514650445] [2021-02-23 16:10:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:09,505 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:09,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:09,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:09,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:09,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,342 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:10:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:10,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:10,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:10,576 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 16:10:10,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514650445] [2021-02-23 16:10:10,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:10,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:10:10,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400985459] [2021-02-23 16:10:10,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:10:10,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:10:10,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:10,605 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2021-02-23 16:10:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:12,445 INFO L93 Difference]: Finished difference Result 504 states and 596 transitions. [2021-02-23 16:10:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:10:12,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:10:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:12,476 INFO L225 Difference]: With dead ends: 504 [2021-02-23 16:10:12,477 INFO L226 Difference]: Without dead ends: 312 [2021-02-23 16:10:12,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-23 16:10:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2021-02-23 16:10:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-23 16:10:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2021-02-23 16:10:12,695 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 147 [2021-02-23 16:10:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:12,697 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2021-02-23 16:10:12,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:10:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2021-02-23 16:10:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:10:12,711 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:12,712 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 16:10:12,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:10:12,712 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1521150489, now seen corresponding path program 1 times [2021-02-23 16:10:12,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:12,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178468964] [2021-02-23 16:10:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:12,724 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:12,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:12,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:12,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:12,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:12,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:12,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,228 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:13,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:10:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:10:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,343 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 16:10:13,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178468964] [2021-02-23 16:10:13,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:13,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:10:13,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57575849] [2021-02-23 16:10:13,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:10:13,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:13,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:10:13,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:10:13,347 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 4 states. [2021-02-23 16:10:14,068 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:15,225 INFO L93 Difference]: Finished difference Result 416 states and 466 transitions. [2021-02-23 16:10:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:10:15,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:10:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:15,229 INFO L225 Difference]: With dead ends: 416 [2021-02-23 16:10:15,229 INFO L226 Difference]: Without dead ends: 295 [2021-02-23 16:10:15,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:10:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-23 16:10:15,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 260. [2021-02-23 16:10:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-23 16:10:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 279 transitions. [2021-02-23 16:10:15,329 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 279 transitions. Word has length 148 [2021-02-23 16:10:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:15,330 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 279 transitions. [2021-02-23 16:10:15,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:10:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 279 transitions. [2021-02-23 16:10:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:10:15,333 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:15,333 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 16:10:15,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:10:15,334 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:15,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:15,334 INFO L82 PathProgramCache]: Analyzing trace with hash 863357525, now seen corresponding path program 1 times [2021-02-23 16:10:15,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:15,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666470608] [2021-02-23 16:10:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:15,339 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:15,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:15,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:15,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,848 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:15,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:15,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:10:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:10:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:15,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:15,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:10:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:16,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:16,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:16,037 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 16:10:16,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666470608] [2021-02-23 16:10:16,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:16,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:16,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927973371] [2021-02-23 16:10:16,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:16,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:16,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:16,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:16,042 INFO L87 Difference]: Start difference. First operand 260 states and 279 transitions. Second operand 10 states. [2021-02-23 16:10:16,664 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:17,144 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:17,522 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:10:17,900 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:18,326 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:18,684 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:20,481 INFO L93 Difference]: Finished difference Result 462 states and 528 transitions. [2021-02-23 16:10:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:10:20,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:10:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:20,486 INFO L225 Difference]: With dead ends: 462 [2021-02-23 16:10:20,487 INFO L226 Difference]: Without dead ends: 317 [2021-02-23 16:10:20,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:10:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-23 16:10:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 260. [2021-02-23 16:10:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-23 16:10:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 278 transitions. [2021-02-23 16:10:20,582 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 278 transitions. Word has length 161 [2021-02-23 16:10:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:20,582 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 278 transitions. [2021-02-23 16:10:20,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 278 transitions. [2021-02-23 16:10:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-23 16:10:20,585 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:20,585 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] [2021-02-23 16:10:20,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:10:20,586 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash 974684257, now seen corresponding path program 1 times [2021-02-23 16:10:20,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:20,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136165616] [2021-02-23 16:10:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:20,590 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:20,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:20,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:20,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:20,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:20,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:20,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:20,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:20,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:20,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:20,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:20,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:20,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:20,994 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:10:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:10:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:21,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:21,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 16:10:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-23 16:10:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,170 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 16:10:21,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136165616] [2021-02-23 16:10:21,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:21,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:10:21,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608718038] [2021-02-23 16:10:21,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:10:21,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:21,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:10:21,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:10:21,172 INFO L87 Difference]: Start difference. First operand 260 states and 278 transitions. Second operand 7 states. [2021-02-23 16:10:21,803 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:23,586 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:24,765 INFO L93 Difference]: Finished difference Result 642 states and 758 transitions. [2021-02-23 16:10:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:10:24,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-23 16:10:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:24,770 INFO L225 Difference]: With dead ends: 642 [2021-02-23 16:10:24,771 INFO L226 Difference]: Without dead ends: 497 [2021-02-23 16:10:24,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:10:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-02-23 16:10:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 370. [2021-02-23 16:10:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2021-02-23 16:10:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 397 transitions. [2021-02-23 16:10:24,974 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 397 transitions. Word has length 174 [2021-02-23 16:10:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:24,974 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 397 transitions. [2021-02-23 16:10:24,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:10:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 397 transitions. [2021-02-23 16:10:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-23 16:10:24,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:24,978 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] [2021-02-23 16:10:24,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:10:24,978 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:24,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:24,979 INFO L82 PathProgramCache]: Analyzing trace with hash -403932291, now seen corresponding path program 1 times [2021-02-23 16:10:24,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:24,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861149619] [2021-02-23 16:10:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:24,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:25,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:25,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:25,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:25,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:25,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,340 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:25,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:10:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:10:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:25,468 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 16:10:25,469 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 16:10:25,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:25,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-23 16:10:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-23 16:10:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,596 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 16:10:25,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861149619] [2021-02-23 16:10:25,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:25,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:25,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924639054] [2021-02-23 16:10:25,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:25,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:25,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:25,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:25,600 INFO L87 Difference]: Start difference. First operand 370 states and 397 transitions. Second operand 10 states. [2021-02-23 16:10:26,323 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:27,558 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:27,935 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:28,300 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:28,672 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:29,062 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:10:29,429 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:31,887 INFO L93 Difference]: Finished difference Result 1021 states and 1245 transitions. [2021-02-23 16:10:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 16:10:31,888 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2021-02-23 16:10:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:31,893 INFO L225 Difference]: With dead ends: 1021 [2021-02-23 16:10:31,894 INFO L226 Difference]: Without dead ends: 766 [2021-02-23 16:10:31,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:10:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-02-23 16:10:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 554. [2021-02-23 16:10:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2021-02-23 16:10:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 608 transitions. [2021-02-23 16:10:32,169 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 608 transitions. Word has length 198 [2021-02-23 16:10:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:32,169 INFO L480 AbstractCegarLoop]: Abstraction has 554 states and 608 transitions. [2021-02-23 16:10:32,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 608 transitions. [2021-02-23 16:10:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-23 16:10:32,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:32,173 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] [2021-02-23 16:10:32,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:10:32,173 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1727190400, now seen corresponding path program 1 times [2021-02-23 16:10:32,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:32,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613762072] [2021-02-23 16:10:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:32,177 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,539 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:32,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:10:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:10:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-23 16:10:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-23 16:10:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:32,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:32,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:32,739 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 16:10:32,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613762072] [2021-02-23 16:10:32,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:32,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:32,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386182269] [2021-02-23 16:10:32,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:32,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:32,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:32,742 INFO L87 Difference]: Start difference. First operand 554 states and 608 transitions. Second operand 10 states. [2021-02-23 16:10:33,351 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:35,116 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:35,510 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:35,878 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:36,258 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:36,601 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:36,970 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:37,294 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:37,794 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:39,924 INFO L93 Difference]: Finished difference Result 1755 states and 2154 transitions. [2021-02-23 16:10:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:10:39,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2021-02-23 16:10:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:39,935 INFO L225 Difference]: With dead ends: 1755 [2021-02-23 16:10:39,935 INFO L226 Difference]: Without dead ends: 1316 [2021-02-23 16:10:39,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:10:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-02-23 16:10:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 932. [2021-02-23 16:10:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-23 16:10:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1031 transitions. [2021-02-23 16:10:40,515 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1031 transitions. Word has length 198 [2021-02-23 16:10:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:40,516 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1031 transitions. [2021-02-23 16:10:40,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1031 transitions. [2021-02-23 16:10:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-23 16:10:40,520 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:40,520 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] [2021-02-23 16:10:40,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:10:40,521 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash 640027892, now seen corresponding path program 1 times [2021-02-23 16:10:40,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:40,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733576986] [2021-02-23 16:10:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:40,525 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:40,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:40,947 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:40,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:40,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:40,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:40,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:10:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:10:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:41,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-23 16:10:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-23 16:10:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:41,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:41,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:41,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:41,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:41,164 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 16:10:41,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733576986] [2021-02-23 16:10:41,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:41,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:10:41,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577538946] [2021-02-23 16:10:41,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:10:41,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:41,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:10:41,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:10:41,167 INFO L87 Difference]: Start difference. First operand 932 states and 1031 transitions. Second operand 11 states. [2021-02-23 16:10:41,766 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:43,615 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:43,990 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:44,386 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:44,753 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:45,149 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:45,631 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:46,026 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:46,426 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:48,088 INFO L93 Difference]: Finished difference Result 1561 states and 1955 transitions. [2021-02-23 16:10:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 16:10:48,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2021-02-23 16:10:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:48,102 INFO L225 Difference]: With dead ends: 1561 [2021-02-23 16:10:48,102 INFO L226 Difference]: Without dead ends: 1558 [2021-02-23 16:10:48,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-23 16:10:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-02-23 16:10:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 932. [2021-02-23 16:10:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-23 16:10:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1029 transitions. [2021-02-23 16:10:48,605 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1029 transitions. Word has length 203 [2021-02-23 16:10:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:48,606 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1029 transitions. [2021-02-23 16:10:48,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:10:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1029 transitions. [2021-02-23 16:10:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 16:10:48,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:48,610 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] [2021-02-23 16:10:48,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:10:48,611 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash 414467557, now seen corresponding path program 1 times [2021-02-23 16:10:48,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:48,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706588244] [2021-02-23 16:10:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:48,614 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:48,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:48,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:48,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:48,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:48,970 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:10:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:10:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:49,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:49,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:49,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:49,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:10:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:49,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:49,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:49,225 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 16:10:49,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706588244] [2021-02-23 16:10:49,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:49,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:10:49,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345896030] [2021-02-23 16:10:49,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:10:49,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:49,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:10:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:10:49,228 INFO L87 Difference]: Start difference. First operand 932 states and 1029 transitions. Second operand 11 states. [2021-02-23 16:10:50,747 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:51,148 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:51,560 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:10:51,967 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:52,386 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:52,768 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:55,292 INFO L93 Difference]: Finished difference Result 2397 states and 2933 transitions. [2021-02-23 16:10:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:10:55,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2021-02-23 16:10:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:55,304 INFO L225 Difference]: With dead ends: 2397 [2021-02-23 16:10:55,304 INFO L226 Difference]: Without dead ends: 1580 [2021-02-23 16:10:55,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:10:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-02-23 16:10:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 964. [2021-02-23 16:10:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2021-02-23 16:10:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1061 transitions. [2021-02-23 16:10:55,861 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1061 transitions. Word has length 204 [2021-02-23 16:10:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:55,862 INFO L480 AbstractCegarLoop]: Abstraction has 964 states and 1061 transitions. [2021-02-23 16:10:55,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:10:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1061 transitions. [2021-02-23 16:10:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 16:10:55,867 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:55,867 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] [2021-02-23 16:10:55,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:10:55,867 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash -559402619, now seen corresponding path program 1 times [2021-02-23 16:10:55,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:55,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394264249] [2021-02-23 16:10:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:55,874 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:55,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:55,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:55,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:55,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:55,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:55,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:55,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:55,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:55,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:55,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,255 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:56,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:10:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:10:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:56,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:56,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:56,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:10:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,535 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 16:10:56,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394264249] [2021-02-23 16:10:56,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:10:56,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321069963] [2021-02-23 16:10:56,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:10:56,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:56,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:10:56,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:10:56,537 INFO L87 Difference]: Start difference. First operand 964 states and 1061 transitions. Second operand 14 states. [2021-02-23 16:10:57,356 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:57,764 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:58,160 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:58,555 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:58,935 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:00,049 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:00,437 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:00,831 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:01,240 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:01,627 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:04,159 INFO L93 Difference]: Finished difference Result 2065 states and 2488 transitions. [2021-02-23 16:11:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 16:11:04,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2021-02-23 16:11:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:04,165 INFO L225 Difference]: With dead ends: 2065 [2021-02-23 16:11:04,166 INFO L226 Difference]: Without dead ends: 1216 [2021-02-23 16:11:04,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:11:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-02-23 16:11:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 802. [2021-02-23 16:11:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2021-02-23 16:11:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 861 transitions. [2021-02-23 16:11:04,532 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 861 transitions. Word has length 204 [2021-02-23 16:11:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:04,534 INFO L480 AbstractCegarLoop]: Abstraction has 802 states and 861 transitions. [2021-02-23 16:11:04,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:11:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 861 transitions. [2021-02-23 16:11:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-23 16:11:04,537 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:04,537 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] [2021-02-23 16:11:04,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:11:04,538 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:04,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2082010584, now seen corresponding path program 1 times [2021-02-23 16:11:04,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:04,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911546957] [2021-02-23 16:11:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:04,542 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:04,627 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:04,697 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:05,005 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:11:05,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:11:05,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:11:05,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:11:05 BoogieIcfgContainer [2021-02-23 16:11:05,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:11:05,031 INFO L168 Benchmark]: Toolchain (without parser) took 58511.72 ms. Allocated memory was 151.0 MB in the beginning and 810.5 MB in the end (delta: 659.6 MB). Free memory was 127.5 MB in the beginning and 453.2 MB in the end (delta: -325.7 MB). Peak memory consumption was 334.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:05,031 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:11:05,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 104.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:05,032 INFO L168 Benchmark]: Boogie Preprocessor took 201.52 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 132.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:05,032 INFO L168 Benchmark]: RCFGBuilder took 1857.99 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 71.4 MB in the end (delta: 60.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:05,032 INFO L168 Benchmark]: TraceAbstraction took 55803.78 ms. Allocated memory was 151.0 MB in the beginning and 810.5 MB in the end (delta: 659.6 MB). Free memory was 70.9 MB in the beginning and 453.2 MB in the end (delta: -382.3 MB). Peak memory consumption was 276.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:05,033 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 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 618.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 104.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 201.52 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 132.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1857.99 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 71.4 MB in the end (delta: 60.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55803.78 ms. Allocated memory was 151.0 MB in the beginning and 810.5 MB in the end (delta: 659.6 MB). Free memory was 70.9 MB in the beginning and 453.2 MB in the end (delta: -382.3 MB). Peak memory consumption was 276.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 390]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L260] int retValue_acc ; [L261] int tmp ; [L265] FCALL select_helpers() [L266] FCALL select_features() [L267] CALL, EXPR valid_product() [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); [L267] RET, EXPR valid_product() [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) [L271] FCALL setup() [L272] CALL runTest() [L251] CALL test() [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 [L329] COND TRUE 1 [L331] COND TRUE splverifierCounter < 4 [L337] tmp = __VERIFIER_nondet_int() [L339] COND TRUE \read(tmp) [L341] CALL waterRise() [L96] COND TRUE waterLevel < 2 [L97] waterLevel = waterLevel + 1 [L341] RET waterRise() [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND TRUE \read(tmp___0) [L351] CALL changeMethaneLevel() [L108] COND FALSE !(\read(methaneLevelCritical)) [L111] methaneLevelCritical = 1 [L351] RET changeMethaneLevel() [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L361] CALL startSystem() [L597] systemActive = 1 [L361] RET startSystem() [L374] CALL timeShift() [L404] COND FALSE !(\read(pumpRunning)) [L411] COND TRUE \read(systemActive) [L413] CALL processEnvironment() [L459] int tmp ; [L462] COND FALSE !(\read(pumpRunning)) [L477] CALL processEnvironment__wrappee__highWaterSensor() [L433] int tmp ; [L436] COND TRUE ! pumpRunning [L438] CALL, EXPR isHighWaterLevel() [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L562] CALL, EXPR isHighWaterSensorDry() [L158] int retValue_acc ; [L161] COND FALSE !(waterLevel < 2) [L165] retValue_acc = 0 [L166] return (retValue_acc); [L562] RET, EXPR isHighWaterSensorDry() [L562] tmp = isHighWaterSensorDry() [L564] COND FALSE !(\read(tmp)) [L567] tmp___0 = 1 [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); [L438] RET, EXPR isHighWaterLevel() [L438] tmp = isHighWaterLevel() [L440] COND TRUE \read(tmp) [L442] CALL activatePump() [L487] pumpRunning = 1 [L442] RET activatePump() [L477] RET processEnvironment__wrappee__highWaterSensor() [L413] RET processEnvironment() [L419] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L511] int retValue_acc ; [L514] retValue_acc = pumpRunning [L515] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L390] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 650 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 45.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2248 SDtfs, 5204 SDslu, 4718 SDs, 0 SdLazy, 9879 SolverSat, 1547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=964occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 2513 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...