/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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:09:54,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:09:54,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:09:54,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:09:54,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:09:54,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:09:54,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:09:54,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:09:54,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:09:54,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:09:54,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:09:54,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:09:54,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:09:54,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:09:54,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:09:54,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:09:54,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:09:54,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:09:54,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:09:54,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:09:54,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:09:54,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:09:54,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:09:54,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:09:54,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:09:54,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:09:54,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:09:54,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:09:54,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:09:54,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:09:54,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:09:54,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:09:54,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:09:54,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:09:54,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:09:54,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:09:54,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:09:54,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:09:54,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:09:54,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:09:54,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:09:54,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:09:54,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:09:54,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:09:54,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:09:54,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:09:54,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:09:54,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:09:54,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:09:54,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:09:54,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:09:54,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:09:54,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:09:54,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:09:54,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:09:54,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:09:54,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:09:54,438 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:09:54,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:09:54,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:09:54,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:09:54,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:09:54,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:09:54,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:09:54,439 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:09:54,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:09:54,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:09:54,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:09:54,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:09:54,863 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:09:54,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2021-02-23 17:09:54,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79534c317/3d9511fa431c457cb59f4f2217985528/FLAGaf520b1e1 [2021-02-23 17:09:55,630 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:09:55,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2021-02-23 17:09:55,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79534c317/3d9511fa431c457cb59f4f2217985528/FLAGaf520b1e1 [2021-02-23 17:09:55,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79534c317/3d9511fa431c457cb59f4f2217985528 [2021-02-23 17:09:55,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:09:55,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:09:55,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:09:55,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:09:55,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:09:55,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:09:55" (1/1) ... [2021-02-23 17:09:55,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9a4fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:55, skipping insertion in model container [2021-02-23 17:09:55,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:09:55" (1/1) ... [2021-02-23 17:09:55,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:09:56,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:09:56,357 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_product51.cil.c[8616,8629] [2021-02-23 17:09:56,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:09:56,446 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:09:56,493 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_product51.cil.c[8616,8629] [2021-02-23 17:09:56,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:09:56,594 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:09:56,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56 WrapperNode [2021-02-23 17:09:56,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:09:56,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:09:56,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:09:56,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:09:56,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... [2021-02-23 17:09:56,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:09:56,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:09:56,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:09:56,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:09:56,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:09:56,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:09:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:09:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 17:09:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:09:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 17:09:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 17:09:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 17:09:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 17:09:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:09:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:09:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 17:09:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 17:09:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 17:09:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 17:09:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 17:09:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 17:09:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 17:09:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 17:09:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 17:09:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 17:09:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 17:09:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 17:09:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 17:09:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 17:09:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 17:09:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 17:09:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 17:09:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 17:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 17:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 17:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 17:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 17:09:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 17:09:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 17:09:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 17:09:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 17:09:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 17:09:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 17:09:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 17:09:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 17:09:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 17:09:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 17:09:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:09:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:09:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:09:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:09:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:09:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 17:09:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 17:09:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 17:09:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 17:09:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 17:09:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 17:09:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 17:09:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 17:09:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 17:09:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 17:09:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 17:09:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 17:09:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 17:09:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:09:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 17:09:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 17:09:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 17:09:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:09:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 17:09:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 17:09:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 17:09:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 17:09:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 17:09:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 17:09:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 17:09:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 17:09:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 17:09:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 17:09:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 17:09:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 17:09:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 17:09:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 17:09:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 17:09:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 17:09:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:09:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 17:09:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:09:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 17:09:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:09:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 17:09:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 17:09:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:09:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 17:09:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 17:09:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:09:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 17:09:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 17:09:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 17:09:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:09:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:09:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:09:58,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:09:58,196 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 17:09:58,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:09:58 BoogieIcfgContainer [2021-02-23 17:09:58,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:09:58,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:09:58,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:09:58,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:09:58,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:09:55" (1/3) ... [2021-02-23 17:09:58,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a32193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:09:58, skipping insertion in model container [2021-02-23 17:09:58,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:09:56" (2/3) ... [2021-02-23 17:09:58,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a32193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:09:58, skipping insertion in model container [2021-02-23 17:09:58,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:09:58" (3/3) ... [2021-02-23 17:09:58,209 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2021-02-23 17:09:58,215 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:09:58,221 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:09:58,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:09:58,266 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:09:58,266 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:09:58,266 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:09:58,266 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:09:58,267 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:09:58,267 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:09:58,267 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:09:58,267 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:09:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2021-02-23 17:09:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 17:09:58,313 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:09:58,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:09:58,315 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:09:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:09:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash 532742290, now seen corresponding path program 1 times [2021-02-23 17:09:58,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:09:58,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441387530] [2021-02-23 17:09:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:09:58,412 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:09:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:58,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:58,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:58,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:58,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,123 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:09:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:09:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:09:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:09:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:09:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:09:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 17:09:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:09:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:09:59,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:09:59,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:09:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:09:59,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441387530] [2021-02-23 17:09:59,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:09:59,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:09:59,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734425750] [2021-02-23 17:09:59,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:09:59,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:09:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:09:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:09:59,319 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 3 states. [2021-02-23 17:10:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:10:01,167 INFO L93 Difference]: Finished difference Result 509 states and 605 transitions. [2021-02-23 17:10:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:10:01,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 17:10:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:10:01,187 INFO L225 Difference]: With dead ends: 509 [2021-02-23 17:10:01,187 INFO L226 Difference]: Without dead ends: 315 [2021-02-23 17:10:01,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:10:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-02-23 17:10:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 272. [2021-02-23 17:10:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-02-23 17:10:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2021-02-23 17:10:01,423 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 147 [2021-02-23 17:10:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:10:01,424 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2021-02-23 17:10:01,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:10:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2021-02-23 17:10:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:10:01,429 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:10:01,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:10:01,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:10:01,430 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:10:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:10:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 37641117, now seen corresponding path program 1 times [2021-02-23 17:10:01,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:10:01,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463094785] [2021-02-23 17:10:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:10:01,437 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:10:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:01,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:01,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,925 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:10:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:10:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:01,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:10:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:01,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:10:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:01,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:10:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:01,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:10:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:01,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:01,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 17:10:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:02,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:02,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:02,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:10:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:02,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:02,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:10:02,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463094785] [2021-02-23 17:10:02,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:10:02,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:10:02,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414713361] [2021-02-23 17:10:02,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:10:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:10:02,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:10:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:10:02,055 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand 4 states. [2021-02-23 17:10:02,778 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:10:03,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:10:03,911 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2021-02-23 17:10:03,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:10:03,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 17:10:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:10:03,919 INFO L225 Difference]: With dead ends: 419 [2021-02-23 17:10:03,919 INFO L226 Difference]: Without dead ends: 298 [2021-02-23 17:10:03,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:10:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-02-23 17:10:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 262. [2021-02-23 17:10:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-02-23 17:10:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 283 transitions. [2021-02-23 17:10:04,018 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 283 transitions. Word has length 148 [2021-02-23 17:10:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:10:04,019 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 283 transitions. [2021-02-23 17:10:04,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:10:04,019 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 283 transitions. [2021-02-23 17:10:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 17:10:04,022 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:10:04,022 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] [2021-02-23 17:10:04,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:10:04,022 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:10:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:10:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash 423990714, now seen corresponding path program 1 times [2021-02-23 17:10:04,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:10:04,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81269105] [2021-02-23 17:10:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:10:04,027 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:10:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:04,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:04,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:04,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:04,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:04,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:04,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:04,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,580 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:10:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:10:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:10:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:10:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:10:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:10:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:10:04,691 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:10:04,692 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:10:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:10:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:10:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 17:10:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:04,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:04,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:10:04,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81269105] [2021-02-23 17:10:04,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:10:04,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:10:04,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70110420] [2021-02-23 17:10:04,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:10:04,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:10:04,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:10:04,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:10:04,762 INFO L87 Difference]: Start difference. First operand 262 states and 283 transitions. Second operand 9 states. [2021-02-23 17:10:05,399 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:10:05,824 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:10:06,229 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:10:06,590 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:06,967 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:07,335 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:08,451 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:10:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:10:10,859 INFO L93 Difference]: Finished difference Result 687 states and 790 transitions. [2021-02-23 17:10:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:10:10,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 17:10:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:10:10,865 INFO L225 Difference]: With dead ends: 687 [2021-02-23 17:10:10,865 INFO L226 Difference]: Without dead ends: 540 [2021-02-23 17:10:10,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:10:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-02-23 17:10:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 473. [2021-02-23 17:10:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2021-02-23 17:10:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 529 transitions. [2021-02-23 17:10:11,086 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 529 transitions. Word has length 157 [2021-02-23 17:10:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:10:11,087 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 529 transitions. [2021-02-23 17:10:11,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:10:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 529 transitions. [2021-02-23 17:10:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 17:10:11,091 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:10:11,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:10:11,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:10:11,092 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:10:11,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:10:11,093 INFO L82 PathProgramCache]: Analyzing trace with hash -518020844, now seen corresponding path program 1 times [2021-02-23 17:10:11,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:10:11,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624725572] [2021-02-23 17:10:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:10:11,097 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:10:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:11,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:11,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:11,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:11,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:11,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:11,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:11,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:11,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:11,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:10:11,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,625 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:10:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:10:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:10:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:10:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:10:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:10:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:10:11,747 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:10:11,748 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:10:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:10:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:10:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 17:10:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:11,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 17:10:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:11,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:11,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:10:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624725572] [2021-02-23 17:10:11,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:10:11,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:10:11,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657108712] [2021-02-23 17:10:11,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:10:11,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:10:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:10:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:10:11,942 INFO L87 Difference]: Start difference. First operand 473 states and 529 transitions. Second operand 14 states. [2021-02-23 17:10:12,588 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:10:13,079 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:10:13,460 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:10:13,841 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:14,220 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:14,577 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:15,342 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:10:16,851 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:17,316 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:17,915 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:18,354 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:10:18,727 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:10:19,094 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:10:19,466 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:10:19,873 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:20,234 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:20,765 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:21,272 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:10:21,665 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:10:22,204 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:10:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:10:24,471 INFO L93 Difference]: Finished difference Result 1629 states and 2040 transitions. [2021-02-23 17:10:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:10:24,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 17:10:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:10:24,508 INFO L225 Difference]: With dead ends: 1629 [2021-02-23 17:10:24,509 INFO L226 Difference]: Without dead ends: 1271 [2021-02-23 17:10:24,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:10:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-02-23 17:10:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1136. [2021-02-23 17:10:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2021-02-23 17:10:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1342 transitions. [2021-02-23 17:10:25,198 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1342 transitions. Word has length 166 [2021-02-23 17:10:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:10:25,200 INFO L480 AbstractCegarLoop]: Abstraction has 1136 states and 1342 transitions. [2021-02-23 17:10:25,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:10:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1342 transitions. [2021-02-23 17:10:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 17:10:25,206 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:10:25,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:10:25,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:10:25,207 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:10:25,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:10:25,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1494626536, now seen corresponding path program 1 times [2021-02-23 17:10:25,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:10:25,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15636261] [2021-02-23 17:10:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:10:25,213 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:10:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,605 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:10:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:10:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:10:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:10:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:10:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:10:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 17:10:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:10:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 17:10:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:10:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 17:10:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:10:25,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:10:25,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:10:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:10:25,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15636261] [2021-02-23 17:10:25,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:10:25,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:10:25,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446853184] [2021-02-23 17:10:25,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:10:25,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:10:25,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:10:25,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:10:25,758 INFO L87 Difference]: Start difference. First operand 1136 states and 1342 transitions. Second operand 6 states. [2021-02-23 17:10:26,391 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:10:29,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:10:29,377 INFO L93 Difference]: Finished difference Result 2593 states and 3251 transitions. [2021-02-23 17:10:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:10:29,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 17:10:29,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:10:29,388 INFO L225 Difference]: With dead ends: 2593 [2021-02-23 17:10:29,388 INFO L226 Difference]: Without dead ends: 1572 [2021-02-23 17:10:29,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:10:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-02-23 17:10:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1449. [2021-02-23 17:10:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2021-02-23 17:10:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1709 transitions. [2021-02-23 17:10:30,114 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1709 transitions. Word has length 171 [2021-02-23 17:10:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:10:30,114 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 1709 transitions. [2021-02-23 17:10:30,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:10:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1709 transitions. [2021-02-23 17:10:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 17:10:30,120 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:10:30,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:10:30,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:10:30,121 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:10:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:10:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1115653263, now seen corresponding path program 1 times [2021-02-23 17:10:30,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:10:30,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856712345] [2021-02-23 17:10:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY