/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:29:19,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:29:19,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:29:19,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:29:19,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:29:19,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:29:19,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:29:19,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:29:19,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:29:19,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:29:19,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:29:19,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:29:19,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:29:19,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:29:19,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:29:19,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:29:19,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:29:19,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:29:19,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:29:19,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:29:19,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:29:19,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:29:19,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:29:19,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:29:19,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:29:19,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:29:19,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:29:19,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:29:19,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:29:19,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:29:19,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:29:19,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:29:19,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:29:19,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:29:19,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:29:19,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:29:19,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:29:19,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:29:19,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:29:19,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:29:19,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:29:19,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:29:19,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:29:19,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:29:19,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:29:19,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:29:19,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:29:19,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:29:19,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:29:19,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:29:19,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:29:19,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:29:19,548 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:29:19,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:29:19,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:29:19,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:29:19,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:29:19,549 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:29:19,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:29:19,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:29:19,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:29:19,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:29:19,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:29:19,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:29:19,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:29:19,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:29:20,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:29:20,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:29:20,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:29:20,014 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:29:20,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2021-02-21 19:29:20,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf3524f0/89d21a9dda6842dcbae9e860f6e994c5/FLAG5be9a96f8 [2021-02-21 19:29:20,910 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:29:20,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2021-02-21 19:29:20,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf3524f0/89d21a9dda6842dcbae9e860f6e994c5/FLAG5be9a96f8 [2021-02-21 19:29:21,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf3524f0/89d21a9dda6842dcbae9e860f6e994c5 [2021-02-21 19:29:21,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:29:21,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:29:21,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:21,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:29:21,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:29:21,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:21,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e184251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21, skipping insertion in model container [2021-02-21 19:29:21,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:21,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:29:21,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:29:21,626 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2021-02-21 19:29:21,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:21,658 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:29:21,761 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2021-02-21 19:29:21,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:21,819 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:29:21,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21 WrapperNode [2021-02-21 19:29:21,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:21,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:29:21,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:29:21,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:29:21,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:21,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:21,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:21,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:21,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:22,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:22,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (1/1) ... [2021-02-21 19:29:22,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:29:22,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:29:22,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:29:22,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:29:22,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (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 [2021-02-21 19:29:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:29:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:29:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:29:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:29:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:29:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:29:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:29:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:29:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:29:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:29:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:29:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:29:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:29:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:29:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:29:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:29:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:29:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:29:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:29:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:29:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:29:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:29:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:29:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:29:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:29:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:29:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:29:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:29:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:29:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:29:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:29:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:29:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:29:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:29:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:29:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:29:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:29:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:29:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:29:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:29:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:29:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:29:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:29:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:29:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:29:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:29:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:29:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:29:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:29:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:29:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:29:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:29:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:29:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:29:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:29:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:29:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:29:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:29:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:29:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:29:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:29:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:29:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:29:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:29:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:29:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:29:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:29:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:29:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:29:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:29:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:29:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:29:23,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:29:23,691 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:29:23,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:23 BoogieIcfgContainer [2021-02-21 19:29:23,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:29:23,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:29:23,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:29:23,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:29:23,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:29:21" (1/3) ... [2021-02-21 19:29:23,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384d649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:23, skipping insertion in model container [2021-02-21 19:29:23,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:21" (2/3) ... [2021-02-21 19:29:23,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384d649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:23, skipping insertion in model container [2021-02-21 19:29:23,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:23" (3/3) ... [2021-02-21 19:29:23,725 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2021-02-21 19:29:23,743 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:29:23,755 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:29:23,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:29:23,837 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:29:23,838 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:29:23,838 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:29:23,838 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:29:23,838 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:29:23,838 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:29:23,838 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:29:23,839 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:29:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2021-02-21 19:29:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:29:23,910 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:23,911 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] [2021-02-21 19:29:23,912 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1202902043, now seen corresponding path program 1 times [2021-02-21 19:29:23,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:23,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803760861] [2021-02-21 19:29:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:24,034 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,815 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:29:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:24,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:24,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:25,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803760861] [2021-02-21 19:29:25,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:25,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:29:25,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852638287] [2021-02-21 19:29:25,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:29:25,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:29:25,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:25,041 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2021-02-21 19:29:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:26,637 INFO L93 Difference]: Finished difference Result 425 states and 507 transitions. [2021-02-21 19:29:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:29:26,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:29:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:26,660 INFO L225 Difference]: With dead ends: 425 [2021-02-21 19:29:26,660 INFO L226 Difference]: Without dead ends: 271 [2021-02-21 19:29:26,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-02-21 19:29:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 232. [2021-02-21 19:29:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2021-02-21 19:29:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 250 transitions. [2021-02-21 19:29:26,819 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 250 transitions. Word has length 147 [2021-02-21 19:29:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:26,821 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 250 transitions. [2021-02-21 19:29:26,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:29:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 250 transitions. [2021-02-21 19:29:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:29:26,825 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:26,825 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] [2021-02-21 19:29:26,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:29:26,826 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2017654119, now seen corresponding path program 1 times [2021-02-21 19:29:26,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:26,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036046752] [2021-02-21 19:29:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:26,832 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:26,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:26,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:26,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:26,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,371 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:29:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:27,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:27,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:27,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036046752] [2021-02-21 19:29:27,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:27,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:29:27,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181808922] [2021-02-21 19:29:27,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:29:27,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:27,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:29:27,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:29:27,485 INFO L87 Difference]: Start difference. First operand 232 states and 250 transitions. Second operand 4 states. [2021-02-21 19:29:28,264 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:29,146 INFO L93 Difference]: Finished difference Result 341 states and 381 transitions. [2021-02-21 19:29:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:29:29,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:29:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:29,159 INFO L225 Difference]: With dead ends: 341 [2021-02-21 19:29:29,159 INFO L226 Difference]: Without dead ends: 254 [2021-02-21 19:29:29,162 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 [2021-02-21 19:29:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-21 19:29:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-02-21 19:29:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-02-21 19:29:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-02-21 19:29:29,276 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 148 [2021-02-21 19:29:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:29,277 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-02-21 19:29:29,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:29:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-02-21 19:29:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:29:29,280 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:29,280 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] [2021-02-21 19:29:29,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:29:29,280 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:29,281 INFO L82 PathProgramCache]: Analyzing trace with hash 384793059, now seen corresponding path program 1 times [2021-02-21 19:29:29,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:29,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679478035] [2021-02-21 19:29:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:29,286 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:29,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:29,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:29,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:29,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,715 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:29,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:29,902 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:29,904 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:29,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:29,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:29:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:29,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:29,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:30,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679478035] [2021-02-21 19:29:30,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:30,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:29:30,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792219506] [2021-02-21 19:29:30,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:29:30,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:30,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:29:30,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:29:30,065 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand 9 states. [2021-02-21 19:29:30,775 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:31,251 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:31,649 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:32,066 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:32,460 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:32,796 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:34,183 INFO L93 Difference]: Finished difference Result 361 states and 406 transitions. [2021-02-21 19:29:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:29:34,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:29:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:34,187 INFO L225 Difference]: With dead ends: 361 [2021-02-21 19:29:34,187 INFO L226 Difference]: Without dead ends: 254 [2021-02-21 19:29:34,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:29:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-21 19:29:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-02-21 19:29:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-02-21 19:29:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 236 transitions. [2021-02-21 19:29:34,286 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 236 transitions. Word has length 157 [2021-02-21 19:29:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:34,286 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 236 transitions. [2021-02-21 19:29:34,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:29:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 236 transitions. [2021-02-21 19:29:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:29:34,289 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:34,290 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] [2021-02-21 19:29:34,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:29:34,290 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:34,291 INFO L82 PathProgramCache]: Analyzing trace with hash 624499832, now seen corresponding path program 1 times [2021-02-21 19:29:34,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:34,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271928049] [2021-02-21 19:29:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:34,295 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,715 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:29:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:34,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:29:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:29:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:34,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:34,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:34,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271928049] [2021-02-21 19:29:34,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:34,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:29:34,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558153030] [2021-02-21 19:29:34,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:29:34,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:29:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:29:34,914 INFO L87 Difference]: Start difference. First operand 222 states and 236 transitions. Second operand 6 states. [2021-02-21 19:29:35,511 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:37,102 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:37,657 INFO L93 Difference]: Finished difference Result 483 states and 549 transitions. [2021-02-21 19:29:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:29:37,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-21 19:29:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:37,662 INFO L225 Difference]: With dead ends: 483 [2021-02-21 19:29:37,663 INFO L226 Difference]: Without dead ends: 376 [2021-02-21 19:29:37,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:29:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-02-21 19:29:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 317. [2021-02-21 19:29:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2021-02-21 19:29:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 341 transitions. [2021-02-21 19:29:37,872 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 341 transitions. Word has length 165 [2021-02-21 19:29:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:37,872 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 341 transitions. [2021-02-21 19:29:37,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:29:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 341 transitions. [2021-02-21 19:29:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-02-21 19:29:37,877 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:37,877 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] [2021-02-21 19:29:37,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:29:37,878 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:37,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:37,878 INFO L82 PathProgramCache]: Analyzing trace with hash -373210986, now seen corresponding path program 1 times [2021-02-21 19:29:37,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:37,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297257357] [2021-02-21 19:29:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:37,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:37,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:37,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:37,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:37,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:38,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,318 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:38,407 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:38,408 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:38,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:29:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:29:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:29:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-21 19:29:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:38,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 19:29:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:38,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:38,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:38,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297257357] [2021-02-21 19:29:38,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:38,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:29:38,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091673810] [2021-02-21 19:29:38,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:29:38,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:38,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:29:38,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:29:38,587 INFO L87 Difference]: Start difference. First operand 317 states and 341 transitions. Second operand 14 states. [2021-02-21 19:29:39,205 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:39,677 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:40,065 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:40,456 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:40,839 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:41,204 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:42,035 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:43,329 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:43,746 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:44,169 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:44,559 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:44,932 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:45,335 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:45,701 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:46,117 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:46,562 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:46,980 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:48,229 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:48,598 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:49,036 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:49,994 INFO L93 Difference]: Finished difference Result 921 states and 1103 transitions. [2021-02-21 19:29:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:29:49,995 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2021-02-21 19:29:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:50,005 INFO L225 Difference]: With dead ends: 921 [2021-02-21 19:29:50,006 INFO L226 Difference]: Without dead ends: 719 [2021-02-21 19:29:50,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:29:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-02-21 19:29:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 622. [2021-02-21 19:29:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2021-02-21 19:29:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 692 transitions. [2021-02-21 19:29:50,297 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 692 transitions. Word has length 189 [2021-02-21 19:29:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:50,297 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 692 transitions. [2021-02-21 19:29:50,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:29:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 692 transitions. [2021-02-21 19:29:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-02-21 19:29:50,303 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:50,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:50,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:29:50,304 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:50,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:50,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1750208703, now seen corresponding path program 1 times [2021-02-21 19:29:50,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:50,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745055034] [2021-02-21 19:29:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:50,363 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 19:29:50,366 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,789 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:29:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 19:29:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:50,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:50,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:50,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:50,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:50,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:50,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:29:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:50,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:29:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-21 19:29:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-21 19:29:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-02-21 19:29:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-02-21 19:29:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-02-21 19:29:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-02-21 19:29:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:51,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:51,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:51,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745055034] [2021-02-21 19:29:51,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:51,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 19:29:51,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263670690] [2021-02-21 19:29:51,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 19:29:51,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:51,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 19:29:51,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:29:51,173 INFO L87 Difference]: Start difference. First operand 622 states and 692 transitions. Second operand 11 states. [2021-02-21 19:29:52,529 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:52,918 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:53,290 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 19:29:53,666 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:54,050 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:54,429 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:55,541 INFO L93 Difference]: Finished difference Result 1236 states and 1431 transitions. [2021-02-21 19:29:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:29:55,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2021-02-21 19:29:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:55,549 INFO L225 Difference]: With dead ends: 1236 [2021-02-21 19:29:55,550 INFO L226 Difference]: Without dead ends: 729 [2021-02-21 19:29:55,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:29:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-02-21 19:29:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 646. [2021-02-21 19:29:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2021-02-21 19:29:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 717 transitions. [2021-02-21 19:29:55,914 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 717 transitions. Word has length 246 [2021-02-21 19:29:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:55,915 INFO L480 AbstractCegarLoop]: Abstraction has 646 states and 717 transitions. [2021-02-21 19:29:55,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 19:29:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 717 transitions. [2021-02-21 19:29:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-02-21 19:29:55,922 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:55,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:55,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:29:55,923 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:55,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2047107269, now seen corresponding path program 1 times [2021-02-21 19:29:55,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:55,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766693498] [2021-02-21 19:29:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:55,944 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 19:29:55,946 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:56,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:56,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,436 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:56,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:29:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:56,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:56,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:29:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:56,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:29:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-21 19:29:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 19:29:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 19:29:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-02-21 19:29:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-02-21 19:29:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:56,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:56,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:56,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766693498] [2021-02-21 19:29:56,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:56,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:29:56,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555578389] [2021-02-21 19:29:56,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:29:56,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:56,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:29:56,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:29:56,796 INFO L87 Difference]: Start difference. First operand 646 states and 717 transitions. Second operand 14 states. [2021-02-21 19:29:57,554 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:57,971 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:58,344 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:58,718 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:59,068 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:00,066 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:00,458 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:00,840 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:01,286 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:01,665 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:03,021 INFO L93 Difference]: Finished difference Result 1143 states and 1320 transitions. [2021-02-21 19:30:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 19:30:03,022 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 237 [2021-02-21 19:30:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:03,028 INFO L225 Difference]: With dead ends: 1143 [2021-02-21 19:30:03,028 INFO L226 Difference]: Without dead ends: 612 [2021-02-21 19:30:03,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 19:30:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-02-21 19:30:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 550. [2021-02-21 19:30:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2021-02-21 19:30:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 604 transitions. [2021-02-21 19:30:03,351 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 604 transitions. Word has length 237 [2021-02-21 19:30:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:03,352 INFO L480 AbstractCegarLoop]: Abstraction has 550 states and 604 transitions. [2021-02-21 19:30:03,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:30:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 604 transitions. [2021-02-21 19:30:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-02-21 19:30:03,360 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:03,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:30:03,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 19:30:03,361 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:03,361 INFO L82 PathProgramCache]: Analyzing trace with hash -713216102, now seen corresponding path program 1 times [2021-02-21 19:30:03,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:03,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414565601] [2021-02-21 19:30:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:03,651 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2021-02-21 19:30:03,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-02-21 19:30:03,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:03,886 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2021-02-21 19:30:03,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-02-21 19:30:03,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:03,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:03,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:03,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:03,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:03,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:04,177 WARN L202 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2021-02-21 19:30:04,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:04,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-02-21 19:30:04,384 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2021-02-21 19:30:04,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:04,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-02-21 19:30:04,608 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2021-02-21 19:30:04,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:04,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-02-21 19:30:04,805 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2021-02-21 19:30:04,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:04,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-02-21 19:30:05,005 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2021-02-21 19:30:05,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:05,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-02-21 19:30:05,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:05,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:05,219 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2021-02-21 19:30:05,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:05,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-02-21 19:30:05,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:05,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:05,247 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 19:30:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:30:05,436 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:30:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:30:05,600 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:30:05,864 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:30:05,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:30:05,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 19:30:05,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:30:05 BoogieIcfgContainer [2021-02-21 19:30:05,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:30:05,916 INFO L168 Benchmark]: Toolchain (without parser) took 44772.92 ms. Allocated memory was 157.3 MB in the beginning and 608.2 MB in the end (delta: 450.9 MB). Free memory was 132.8 MB in the beginning and 352.6 MB in the end (delta: -219.8 MB). Peak memory consumption was 231.7 MB. Max. memory is 8.0 GB. [2021-02-21 19:30:05,922 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:30:05,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.37 ms. Allocated memory is still 157.3 MB. Free memory was 131.6 MB in the beginning and 111.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 19:30:05,928 INFO L168 Benchmark]: Boogie Preprocessor took 220.05 ms. Allocated memory is still 157.3 MB. Free memory was 111.7 MB in the beginning and 139.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:30:05,929 INFO L168 Benchmark]: RCFGBuilder took 1657.56 ms. Allocated memory is still 157.3 MB. Free memory was 138.6 MB in the beginning and 90.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. [2021-02-21 19:30:05,929 INFO L168 Benchmark]: TraceAbstraction took 42210.36 ms. Allocated memory was 157.3 MB in the beginning and 608.2 MB in the end (delta: 450.9 MB). Free memory was 90.2 MB in the beginning and 352.6 MB in the end (delta: -262.4 MB). Peak memory consumption was 188.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:30:05,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 663.37 ms. Allocated memory is still 157.3 MB. Free memory was 131.6 MB in the beginning and 111.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 220.05 ms. Allocated memory is still 157.3 MB. Free memory was 111.7 MB in the beginning and 139.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1657.56 ms. Allocated memory is still 157.3 MB. Free memory was 138.6 MB in the beginning and 90.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 42210.36 ms. Allocated memory was 157.3 MB in the beginning and 608.2 MB in the end (delta: 450.9 MB). Free memory was 90.2 MB in the beginning and 352.6 MB in the end (delta: -262.4 MB). Peak memory consumption was 188.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L617] int waterLevel = 1; [L618] int methaneLevelCritical = 0; [L714] int pumpRunning = 0; [L715] int systemActive = 1; [L489] int retValue_acc ; [L490] int tmp ; [L494] FCALL select_helpers() [L495] FCALL select_features() [L496] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L496] RET, EXPR valid_product() [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) [L500] FCALL setup() [L501] CALL runTest() [L480] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L635] COND TRUE waterLevel < 2 [L636] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L600] CALL timeShift() [L722] COND FALSE !(\read(pumpRunning)) [L729] COND TRUE \read(systemActive) [L731] CALL processEnvironment() [L751] int tmp ; [L754] COND TRUE ! pumpRunning [L756] CALL, EXPR isHighWaterLevel() [L848] int retValue_acc ; [L849] int tmp ; [L850] int tmp___0 ; [L854] CALL, EXPR isHighWaterSensorDry() [L697] int retValue_acc ; [L700] COND FALSE !(waterLevel < 2) [L704] retValue_acc = 0 [L705] return (retValue_acc); [L854] RET, EXPR isHighWaterSensorDry() [L854] tmp = isHighWaterSensorDry() [L856] COND FALSE !(\read(tmp)) [L859] tmp___0 = 1 [L861] retValue_acc = tmp___0 [L862] return (retValue_acc); [L756] RET, EXPR isHighWaterLevel() [L756] tmp = isHighWaterLevel() [L758] COND TRUE \read(tmp) [L760] CALL activatePump() [L779] pumpRunning = 1 [L760] RET activatePump() [L731] RET processEnvironment() [L737] CALL __utac_acc__Specification4_spec__1() [L877] int tmp ; [L878] int tmp___0 ; [L882] CALL, EXPR getWaterLevel() [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) [L737] RET __utac_acc__Specification4_spec__1() [L600] RET timeShift() [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L600] CALL timeShift() [L722] COND TRUE \read(pumpRunning) [L724] CALL lowerWaterLevel() [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 [L724] RET lowerWaterLevel() [L729] COND TRUE \read(systemActive) [L731] CALL processEnvironment() [L751] int tmp ; [L754] COND FALSE !(! pumpRunning) [L769] FCALL processEnvironment__wrappee__base() [L731] RET processEnvironment() [L737] CALL __utac_acc__Specification4_spec__1() [L877] int tmp ; [L878] int tmp___0 ; [L882] CALL, EXPR getWaterLevel() [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp = getWaterLevel() [L884] COND TRUE tmp == 0 [L886] CALL, EXPR isPumpRunning() [L803] int retValue_acc ; [L806] retValue_acc = pumpRunning [L807] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___0 = isPumpRunning() [L888] COND TRUE \read(tmp___0) [L890] CALL __automaton_fail() [L871] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 615 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 32.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1491 SDtfs, 2801 SDslu, 3424 SDs, 0 SdLazy, 5880 SolverSat, 772 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=646occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 404 StatesRemovedByMinimization, 7 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...