/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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:30:52,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:30:52,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:30:52,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:30:52,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:30:52,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:30:52,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:30:52,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:30:52,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:30:52,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:30:52,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:30:52,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:30:52,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:30:52,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:30:52,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:30:52,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:30:52,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:30:52,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:30:52,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:30:52,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:30:52,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:30:52,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:30:52,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:30:52,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:30:52,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:30:52,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:30:52,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:30:52,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:30:52,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:30:52,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:30:52,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:30:52,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:30:52,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:30:52,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:30:52,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:30:52,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:30:52,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:30:52,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:30:52,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:30:52,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:30:52,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:30:52,682 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 19:30:52,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:30:52,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:30:52,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:30:52,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:30:52,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:30:52,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:30:52,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:30:52,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:30:52,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:30:52,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:30:52,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:30:52,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:30:52,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:30:52,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:30:52,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:30:52,720 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:30:52,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:30:52,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:30:52,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:30:52,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:30:52,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:30:52,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:30:52,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:30:53,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:30:53,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:30:53,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:30:53,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:30:53,145 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:30:53,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2021-02-21 19:30:53,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1360001/c748311f11834bb9a090c6c44279e2ba/FLAG80ee2f2f3 [2021-02-21 19:30:54,010 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:30:54,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2021-02-21 19:30:54,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1360001/c748311f11834bb9a090c6c44279e2ba/FLAG80ee2f2f3 [2021-02-21 19:30:54,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1360001/c748311f11834bb9a090c6c44279e2ba [2021-02-21 19:30:54,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:30:54,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:30:54,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:30:54,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:30:54,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:30:54,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:54,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470c159b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54, skipping insertion in model container [2021-02-21 19:30:54,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:54,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:30:54,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:30:54,610 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_product40.cil.c[5076,5089] [2021-02-21 19:30:54,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:30:54,714 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:30:54,750 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_product40.cil.c[5076,5089] [2021-02-21 19:30:54,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:30:54,849 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:30:54,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54 WrapperNode [2021-02-21 19:30:54,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:30:54,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:30:54,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:30:54,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:30:54,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:54,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:54,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:54,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:54,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:55,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:55,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (1/1) ... [2021-02-21 19:30:55,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:30:55,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:30:55,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:30:55,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:30:55,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (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 19:30:55,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:30:55,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:30:55,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:30:55,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:30:55,180 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:30:55,181 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:30:55,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:30:55,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:30:55,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:30:55,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:30:55,182 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:30:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:30:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:30:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:30:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:30:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:30:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:30:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:30:55,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:30:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:30:55,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:30:55,188 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:30:55,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:30:55,189 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:30:55,189 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:30:55,189 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:30:55,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:30:55,190 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:30:55,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:30:55,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:30:55,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:30:55,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:30:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:30:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:30:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:30:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:30:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:30:55,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:30:55,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:30:55,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:30:55,192 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:30:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:30:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:30:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:30:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:30:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:30:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:30:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:30:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:30:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:30:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:30:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:30:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:30:55,194 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:30:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:30:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:30:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:30:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:30:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:30:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:30:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:30:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:30:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:30:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:30:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:30:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:30:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:30:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:30:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:30:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:30:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:30:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:30:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:30:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:30:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:30:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:30:55,199 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:30:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:30:55,200 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:30:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:30:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:30:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:30:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:30:55,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:30:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:30:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:30:55,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:30:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:30:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:30:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:30:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:30:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:30:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:30:55,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:30:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:30:55,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:30:56,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:30:56,587 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:30:56,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:30:56 BoogieIcfgContainer [2021-02-21 19:30:56,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:30:56,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:30:56,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:30:56,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:30:56,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:30:54" (1/3) ... [2021-02-21 19:30:56,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e52de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:30:56, skipping insertion in model container [2021-02-21 19:30:56,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:54" (2/3) ... [2021-02-21 19:30:56,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e52de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:30:56, skipping insertion in model container [2021-02-21 19:30:56,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:30:56" (3/3) ... [2021-02-21 19:30:56,600 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2021-02-21 19:30:56,606 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:30:56,612 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:30:56,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:30:56,656 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:30:56,657 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:30:56,657 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:30:56,657 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:30:56,657 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:30:56,657 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:30:56,657 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:30:56,657 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:30:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-21 19:30:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:30:56,704 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:56,705 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 19:30:56,705 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1685471009, now seen corresponding path program 1 times [2021-02-21 19:30:56,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:56,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864330422] [2021-02-21 19:30:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:56,808 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,603 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:30:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:30:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:57,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:57,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:57,856 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 19:30:57,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864330422] [2021-02-21 19:30:57,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:57,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:30:57,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289899551] [2021-02-21 19:30:57,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:30:57,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:57,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:30:57,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:30:57,884 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-21 19:30:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:59,722 INFO L93 Difference]: Finished difference Result 506 states and 601 transitions. [2021-02-21 19:30:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:30:59,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:30:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:59,742 INFO L225 Difference]: With dead ends: 506 [2021-02-21 19:30:59,742 INFO L226 Difference]: Without dead ends: 314 [2021-02-21 19:30:59,748 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 19:30:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-21 19:30:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 270. [2021-02-21 19:30:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-21 19:30:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2021-02-21 19:30:59,916 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 147 [2021-02-21 19:30:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:59,918 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2021-02-21 19:30:59,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:30:59,918 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2021-02-21 19:30:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:30:59,922 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:59,923 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 19:30:59,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:30:59,923 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1715332996, now seen corresponding path program 1 times [2021-02-21 19:30:59,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:59,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105491159] [2021-02-21 19:30:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:59,929 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:00,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,347 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:31:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:31:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:00,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:00,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:00,444 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 19:31:00,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105491159] [2021-02-21 19:31:00,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:00,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:31:00,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966225257] [2021-02-21 19:31:00,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:31:00,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:31:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:31:00,448 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 4 states. [2021-02-21 19:31:01,174 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:31:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:02,389 INFO L93 Difference]: Finished difference Result 412 states and 463 transitions. [2021-02-21 19:31:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:31:02,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:31:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:02,400 INFO L225 Difference]: With dead ends: 412 [2021-02-21 19:31:02,400 INFO L226 Difference]: Without dead ends: 297 [2021-02-21 19:31:02,406 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 19:31:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-21 19:31:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 260. [2021-02-21 19:31:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-21 19:31:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 280 transitions. [2021-02-21 19:31:02,515 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 280 transitions. Word has length 148 [2021-02-21 19:31:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:02,516 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 280 transitions. [2021-02-21 19:31:02,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:31:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 280 transitions. [2021-02-21 19:31:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:31:02,519 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:02,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:02,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:31:02,520 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2001740728, now seen corresponding path program 1 times [2021-02-21 19:31:02,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:02,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518008257] [2021-02-21 19:31:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:02,525 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:02,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:02,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:02,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:02,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:02,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:02,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:02,964 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:02,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:02,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:31:03,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:31:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:31:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:03,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:31:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:31:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:03,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:03,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:03,124 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 19:31:03,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518008257] [2021-02-21 19:31:03,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:03,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:31:03,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672850460] [2021-02-21 19:31:03,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:31:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:31:03,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:31:03,127 INFO L87 Difference]: Start difference. First operand 260 states and 280 transitions. Second operand 10 states. [2021-02-21 19:31:03,848 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:04,266 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:31:04,598 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:31:04,982 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:05,369 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:05,729 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:06,724 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:31:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:09,530 INFO L93 Difference]: Finished difference Result 705 states and 820 transitions. [2021-02-21 19:31:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:31:09,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:31:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:09,536 INFO L225 Difference]: With dead ends: 705 [2021-02-21 19:31:09,536 INFO L226 Difference]: Without dead ends: 560 [2021-02-21 19:31:09,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:31:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-02-21 19:31:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 465. [2021-02-21 19:31:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2021-02-21 19:31:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 519 transitions. [2021-02-21 19:31:09,758 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 519 transitions. Word has length 161 [2021-02-21 19:31:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:09,759 INFO L480 AbstractCegarLoop]: Abstraction has 465 states and 519 transitions. [2021-02-21 19:31:09,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:31:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 519 transitions. [2021-02-21 19:31:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:31:09,762 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:09,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:09,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:31:09,762 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1297897057, now seen corresponding path program 1 times [2021-02-21 19:31:09,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:09,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056910089] [2021-02-21 19:31:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:09,767 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:09,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:09,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:09,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:09,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:09,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:09,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:09,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:09,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:09,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:09,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:09,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:09,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,225 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:31:10,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:31:10,336 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:31:10,338 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:31:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:31:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:31:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:10,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:31:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:10,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:10,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:10,473 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 19:31:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056910089] [2021-02-21 19:31:10,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:10,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:31:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485164249] [2021-02-21 19:31:10,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:31:10,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:31:10,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:31:10,476 INFO L87 Difference]: Start difference. First operand 465 states and 519 transitions. Second operand 14 states. [2021-02-21 19:31:11,131 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:11,628 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:31:12,048 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:31:12,450 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:12,856 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:13,254 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:14,083 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:31:15,487 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:15,950 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:16,518 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:17,023 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:31:17,464 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:17,855 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:31:18,244 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:31:18,669 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:19,039 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:19,565 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:20,105 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:31:20,597 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:31:21,117 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:31:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:23,634 INFO L93 Difference]: Finished difference Result 1601 states and 2008 transitions. [2021-02-21 19:31:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:31:23,635 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:31:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:23,645 INFO L225 Difference]: With dead ends: 1601 [2021-02-21 19:31:23,645 INFO L226 Difference]: Without dead ends: 1251 [2021-02-21 19:31:23,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:31:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-02-21 19:31:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1112. [2021-02-21 19:31:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2021-02-21 19:31:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1312 transitions. [2021-02-21 19:31:24,135 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1312 transitions. Word has length 166 [2021-02-21 19:31:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:24,136 INFO L480 AbstractCegarLoop]: Abstraction has 1112 states and 1312 transitions. [2021-02-21 19:31:24,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:31:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1312 transitions. [2021-02-21 19:31:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:31:24,141 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:24,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:24,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:31:24,142 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1240889056, now seen corresponding path program 1 times [2021-02-21 19:31:24,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:24,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508296628] [2021-02-21 19:31:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:24,146 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,545 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:31:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:31:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:31:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:31:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:24,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:24,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:24,685 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 19:31:24,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508296628] [2021-02-21 19:31:24,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:24,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:31:24,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991520630] [2021-02-21 19:31:24,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:31:24,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:31:24,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:31:24,688 INFO L87 Difference]: Start difference. First operand 1112 states and 1312 transitions. Second operand 6 states. [2021-02-21 19:31:25,352 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:27,819 INFO L93 Difference]: Finished difference Result 2573 states and 3225 transitions. [2021-02-21 19:31:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:31:27,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:31:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:27,830 INFO L225 Difference]: With dead ends: 2573 [2021-02-21 19:31:27,831 INFO L226 Difference]: Without dead ends: 1576 [2021-02-21 19:31:27,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:31:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-02-21 19:31:28,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1449. [2021-02-21 19:31:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2021-02-21 19:31:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1705 transitions. [2021-02-21 19:31:28,664 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1705 transitions. Word has length 171 [2021-02-21 19:31:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:28,664 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 1705 transitions. [2021-02-21 19:31:28,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:31:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1705 transitions. [2021-02-21 19:31:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:31:28,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:28,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:28,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:31:28,673 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:28,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:28,674 INFO L82 PathProgramCache]: Analyzing trace with hash 651543223, now seen corresponding path program 1 times [2021-02-21 19:31:28,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:28,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330268165] [2021-02-21 19:31:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY