/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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:42:56,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:42:56,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:42:56,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:42:56,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:42:56,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:42:56,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:42:56,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:42:56,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:42:56,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:42:56,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:42:56,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:42:56,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:42:56,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:42:56,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:42:56,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:42:56,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:42:56,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:42:56,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:42:56,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:42:56,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:42:56,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:42:56,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:42:56,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:42:56,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:42:56,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:42:56,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:42:56,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:42:56,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:42:56,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:42:56,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:42:56,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:42:56,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:42:56,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:42:56,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:42:56,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:42:56,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:42:56,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:42:56,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:42:56,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:42:56,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:42:56,720 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 19:42:56,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:42:56,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:42:56,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:42:56,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:42:56,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:42:56,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:42:56,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:42:56,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:42:56,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:42:56,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:42:56,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:42:56,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:42:56,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:42:56,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:42:56,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:42:56,761 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:42:56,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:42:56,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:42:56,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:42:56,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:42:56,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:42:56,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:42:56,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:42:57,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:42:57,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:42:57,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:42:57,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:42:57,333 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:42:57,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product48.cil.c [2021-02-21 19:42:57,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7305bd9/1c558b35bcca43e4b6f81da1ec9b70ab/FLAG8483fc18c [2021-02-21 19:42:58,537 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:42:58,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product48.cil.c [2021-02-21 19:42:58,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7305bd9/1c558b35bcca43e4b6f81da1ec9b70ab/FLAG8483fc18c [2021-02-21 19:42:58,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7305bd9/1c558b35bcca43e4b6f81da1ec9b70ab [2021-02-21 19:42:58,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:42:58,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:42:58,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:42:58,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:42:58,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:42:58,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:42:58" (1/1) ... [2021-02-21 19:42:58,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620ba711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:58, skipping insertion in model container [2021-02-21 19:42:58,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:42:58" (1/1) ... [2021-02-21 19:42:58,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:42:58,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:42:59,459 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_product48.cil.c[11394,11407] [2021-02-21 19:42:59,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:42:59,529 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:42:59,613 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_product48.cil.c[11394,11407] [2021-02-21 19:42:59,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:42:59,704 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:42:59,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59 WrapperNode [2021-02-21 19:42:59,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:42:59,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:42:59,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:42:59,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:42:59,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (1/1) ... [2021-02-21 19:42:59,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:42:59,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:42:59,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:42:59,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:42:59,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (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 19:43:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:43:00,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:43:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:43:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:43:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:43:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:43:00,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:43:00,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:43:00,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:43:00,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:43:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:43:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:43:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:43:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:43:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:43:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:43:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:43:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:43:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:43:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:43:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:43:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:43:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:43:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:43:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:43:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:43:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:43:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:43:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:43:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:43:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:43:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:43:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:43:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:43:01,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:43:01,697 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:43:01,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:43:01 BoogieIcfgContainer [2021-02-21 19:43:01,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:43:01,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:43:01,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:43:01,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:43:01,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:42:58" (1/3) ... [2021-02-21 19:43:01,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88e229c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:43:01, skipping insertion in model container [2021-02-21 19:43:01,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:42:59" (2/3) ... [2021-02-21 19:43:01,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88e229c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:43:01, skipping insertion in model container [2021-02-21 19:43:01,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:43:01" (3/3) ... [2021-02-21 19:43:01,714 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2021-02-21 19:43:01,724 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:43:01,733 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:43:01,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:43:01,796 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:43:01,796 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:43:01,796 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:43:01,796 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:43:01,797 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:43:01,797 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:43:01,797 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:43:01,797 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:43:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2021-02-21 19:43:01,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:43:01,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:01,859 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 19:43:01,859 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash -965416204, now seen corresponding path program 1 times [2021-02-21 19:43:01,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:01,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116275950] [2021-02-21 19:43:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:01,998 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:02,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,852 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:02,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:02,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:02,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:02,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:02,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:02,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:43:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:03,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:03,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:43:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:03,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:03,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:03,095 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 19:43:03,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116275950] [2021-02-21 19:43:03,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:03,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:43:03,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352108930] [2021-02-21 19:43:03,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:43:03,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:03,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:43:03,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:43:03,136 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2021-02-21 19:43:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:05,584 INFO L93 Difference]: Finished difference Result 526 states and 625 transitions. [2021-02-21 19:43:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:43:05,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:43:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:05,610 INFO L225 Difference]: With dead ends: 526 [2021-02-21 19:43:05,610 INFO L226 Difference]: Without dead ends: 325 [2021-02-21 19:43:05,618 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 19:43:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-02-21 19:43:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 279. [2021-02-21 19:43:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2021-02-21 19:43:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 304 transitions. [2021-02-21 19:43:05,898 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 304 transitions. Word has length 147 [2021-02-21 19:43:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:05,899 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 304 transitions. [2021-02-21 19:43:05,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:43:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 304 transitions. [2021-02-21 19:43:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:43:05,905 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:05,906 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 19:43:05,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:43:05,906 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1030662349, now seen corresponding path program 1 times [2021-02-21 19:43:05,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:05,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076398910] [2021-02-21 19:43:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:05,917 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:06,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,531 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:43:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:43:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:06,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:06,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:06,725 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 19:43:06,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076398910] [2021-02-21 19:43:06,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:06,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:43:06,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855680545] [2021-02-21 19:43:06,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:43:06,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:43:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:43:06,731 INFO L87 Difference]: Start difference. First operand 279 states and 304 transitions. Second operand 4 states. [2021-02-21 19:43:07,704 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:09,331 INFO L93 Difference]: Finished difference Result 432 states and 487 transitions. [2021-02-21 19:43:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:43:09,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:43:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:09,337 INFO L225 Difference]: With dead ends: 432 [2021-02-21 19:43:09,337 INFO L226 Difference]: Without dead ends: 308 [2021-02-21 19:43:09,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:43:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-02-21 19:43:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 269. [2021-02-21 19:43:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-02-21 19:43:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2021-02-21 19:43:09,469 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 148 [2021-02-21 19:43:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:09,470 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2021-02-21 19:43:09,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:43:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2021-02-21 19:43:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:43:09,473 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:09,473 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 19:43:09,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:43:09,474 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2047942004, now seen corresponding path program 1 times [2021-02-21 19:43:09,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:09,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615999440] [2021-02-21 19:43:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:09,481 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:09,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:09,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:09,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:09,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:09,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:09,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:09,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:09,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:09,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:09,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:09,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:09,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:09,989 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:09,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:10,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:10,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:43:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:43:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:43:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:10,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:10,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:10,238 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 19:43:10,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615999440] [2021-02-21 19:43:10,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:10,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:43:10,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704960758] [2021-02-21 19:43:10,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:43:10,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:10,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:43:10,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:43:10,241 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 10 states. [2021-02-21 19:43:11,124 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:11,687 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:12,155 WARN L202 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:43:12,604 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:13,037 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:13,482 WARN L202 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:14,720 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:17,848 INFO L93 Difference]: Finished difference Result 736 states and 857 transitions. [2021-02-21 19:43:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:43:17,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:43:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:17,855 INFO L225 Difference]: With dead ends: 736 [2021-02-21 19:43:17,856 INFO L226 Difference]: Without dead ends: 582 [2021-02-21 19:43:17,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:43:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-02-21 19:43:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 483. [2021-02-21 19:43:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-02-21 19:43:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 541 transitions. [2021-02-21 19:43:18,125 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 541 transitions. Word has length 161 [2021-02-21 19:43:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:18,125 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 541 transitions. [2021-02-21 19:43:18,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:43:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 541 transitions. [2021-02-21 19:43:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:43:18,129 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:18,130 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 19:43:18,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:43:18,130 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:18,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1259300487, now seen corresponding path program 1 times [2021-02-21 19:43:18,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:18,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128281293] [2021-02-21 19:43:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:18,136 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:18,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:18,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:18,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:18,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:18,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:18,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:18,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:18,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:18,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:43:18,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,640 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:18,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:43:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:43:18,758 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:43:18,761 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:43:18,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:43:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:43:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:18,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:43:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:18,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:18,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:18,899 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 19:43:18,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128281293] [2021-02-21 19:43:18,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:18,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:43:18,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170967586] [2021-02-21 19:43:18,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:43:18,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:18,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:43:18,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:43:18,902 INFO L87 Difference]: Start difference. First operand 483 states and 541 transitions. Second operand 14 states. [2021-02-21 19:43:19,637 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:20,150 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:20,606 WARN L202 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:43:21,049 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:21,488 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:21,879 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:22,788 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:43:24,296 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:24,790 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:25,377 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:25,911 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:43:26,400 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:43:26,799 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:27,233 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:43:27,723 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:28,133 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:28,705 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:29,358 WARN L202 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:43:29,891 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:43:30,425 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:43:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:33,508 INFO L93 Difference]: Finished difference Result 1685 states and 2108 transitions. [2021-02-21 19:43:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:43:33,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:43:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:33,521 INFO L225 Difference]: With dead ends: 1685 [2021-02-21 19:43:33,521 INFO L226 Difference]: Without dead ends: 1317 [2021-02-21 19:43:33,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:43:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2021-02-21 19:43:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1174. [2021-02-21 19:43:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2021-02-21 19:43:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1386 transitions. [2021-02-21 19:43:34,152 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1386 transitions. Word has length 166 [2021-02-21 19:43:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:34,153 INFO L480 AbstractCegarLoop]: Abstraction has 1174 states and 1386 transitions. [2021-02-21 19:43:34,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:43:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1386 transitions. [2021-02-21 19:43:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:43:34,159 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:34,159 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 19:43:34,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:43:34,160 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1890511923, now seen corresponding path program 1 times [2021-02-21 19:43:34,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:34,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525843581] [2021-02-21 19:43:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:43:34,164 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:43:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,618 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:43:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:43:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:43:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:43:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:43:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:43:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:43:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:43:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:43:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:43:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:43:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:43:34,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:43:34,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:43:34,825 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 19:43:34,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525843581] [2021-02-21 19:43:34,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:43:34,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:43:34,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94517739] [2021-02-21 19:43:34,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:43:34,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:43:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:43:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:43:34,829 INFO L87 Difference]: Start difference. First operand 1174 states and 1386 transitions. Second operand 6 states. [2021-02-21 19:43:35,566 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:43:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:43:38,879 INFO L93 Difference]: Finished difference Result 2779 states and 3449 transitions. [2021-02-21 19:43:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:43:38,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:43:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:43:38,894 INFO L225 Difference]: With dead ends: 2779 [2021-02-21 19:43:38,895 INFO L226 Difference]: Without dead ends: 1720 [2021-02-21 19:43:38,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:43:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2021-02-21 19:43:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1593. [2021-02-21 19:43:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2021-02-21 19:43:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1855 transitions. [2021-02-21 19:43:39,601 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1855 transitions. Word has length 171 [2021-02-21 19:43:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:43:39,602 INFO L480 AbstractCegarLoop]: Abstraction has 1593 states and 1855 transitions. [2021-02-21 19:43:39,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:43:39,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1855 transitions. [2021-02-21 19:43:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:43:39,608 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:43:39,609 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 19:43:39,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:43:39,610 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:43:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:43:39,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1560116860, now seen corresponding path program 1 times [2021-02-21 19:43:39,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:43:39,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184911245] [2021-02-21 19:43:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY