/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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:45:16,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:45:16,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:45:16,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:45:16,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:45:16,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:45:16,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:45:16,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:45:16,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:45:16,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:45:16,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:45:16,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:45:16,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:45:16,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:45:16,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:45:16,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:45:16,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:45:16,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:45:16,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:45:16,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:45:16,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:45:16,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:45:16,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:45:16,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:45:16,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:45:16,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:45:16,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:45:16,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:45:16,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:45:16,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:45:16,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:45:16,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:45:16,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:45:16,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:45:16,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:45:16,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:45:16,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:45:16,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:45:16,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:45:16,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:45:16,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:45:16,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:45:16,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:45:16,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:45:16,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:45:16,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:45:16,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:45:16,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:45:16,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:45:16,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:45:16,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:45:16,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:45:16,991 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:45:16,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:45:16,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:45:16,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:45:16,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:45:16,993 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:45:16,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:45:16,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:45:16,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:45:16,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:45:16,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:45:16,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:45:16,994 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:45:17,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:45:17,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:45:17,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:45:17,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:45:17,484 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:45:17,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2021-02-23 16:45:17,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e1786ec/7a65734e30994cf7855cd77a7eb66d30/FLAGeb9bdeb4f [2021-02-23 16:45:18,254 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:45:18,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2021-02-23 16:45:18,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e1786ec/7a65734e30994cf7855cd77a7eb66d30/FLAGeb9bdeb4f [2021-02-23 16:45:18,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e1786ec/7a65734e30994cf7855cd77a7eb66d30 [2021-02-23 16:45:18,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:45:18,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:45:18,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:45:18,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:45:18,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:45:18,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:45:18" (1/1) ... [2021-02-23 16:45:18,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfd0b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:18, skipping insertion in model container [2021-02-23 16:45:18,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:45:18" (1/1) ... [2021-02-23 16:45:18,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:45:18,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:45:19,148 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_product24.cil.c[17936,17949] [2021-02-23 16:45:19,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:45:19,166 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:45:19,304 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_product24.cil.c[17936,17949] [2021-02-23 16:45:19,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:45:19,361 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:45:19,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19 WrapperNode [2021-02-23 16:45:19,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:45:19,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:45:19,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:45:19,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:45:19,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... [2021-02-23 16:45:19,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:45:19,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:45:19,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:45:19,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:45:19,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:45:19,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:45:19,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:45:19,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:45:19,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:45:19,691 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:45:19,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:45:19,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:45:19,691 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:45:19,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:45:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:45:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:45:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:45:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:45:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:45:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:45:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:45:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:45:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:45:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:45:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:45:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:45:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:45:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:45:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:45:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:45:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:45:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:45:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:45:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:45:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:45:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:45:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:45:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:45:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:45:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:45:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:45:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:45:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:45:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:45:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:45:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:45:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:45:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:45:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:45:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:45:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:45:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:45:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:45:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:45:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:45:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:45:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:45:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:45:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:45:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:45:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:45:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:45:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:45:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:45:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:45:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:45:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:45:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:45:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:45:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:45:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:45:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:45:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:45:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:45:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:45:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:45:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:45:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:45:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:45:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:45:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:45:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:45:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:45:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:45:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:45:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:45:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:45:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:45:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:45:21,101 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:45:21,101 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:45:21,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:45:21 BoogieIcfgContainer [2021-02-23 16:45:21,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:45:21,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:45:21,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:45:21,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:45:21,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:45:18" (1/3) ... [2021-02-23 16:45:21,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cdf4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:45:21, skipping insertion in model container [2021-02-23 16:45:21,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:45:19" (2/3) ... [2021-02-23 16:45:21,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cdf4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:45:21, skipping insertion in model container [2021-02-23 16:45:21,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:45:21" (3/3) ... [2021-02-23 16:45:21,115 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product24.cil.c [2021-02-23 16:45:21,122 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:45:21,129 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:45:21,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:45:21,174 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:45:21,175 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:45:21,175 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:45:21,175 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:45:21,175 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:45:21,175 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:45:21,175 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:45:21,176 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:45:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2021-02-23 16:45:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:45:21,222 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:45:21,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:45:21,224 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:45:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:45:21,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1234803203, now seen corresponding path program 1 times [2021-02-23 16:45:21,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:45:21,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764619983] [2021-02-23 16:45:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:45:21,353 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:45:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:21,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:21,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:21,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:21,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,196 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:45:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:45:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:45:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:45:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:45:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:45:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:45:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:45:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:22,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:22,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:45:22,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764619983] [2021-02-23 16:45:22,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:45:22,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:45:22,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792285192] [2021-02-23 16:45:22,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:45:22,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:45:22,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:45:22,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:45:22,515 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2021-02-23 16:45:24,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:45:24,552 INFO L93 Difference]: Finished difference Result 494 states and 589 transitions. [2021-02-23 16:45:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:45:24,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:45:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:45:24,572 INFO L225 Difference]: With dead ends: 494 [2021-02-23 16:45:24,572 INFO L226 Difference]: Without dead ends: 308 [2021-02-23 16:45:24,578 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 16:45:24,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-02-23 16:45:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-02-23 16:45:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-23 16:45:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-23 16:45:24,780 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 147 [2021-02-23 16:45:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:45:24,781 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-23 16:45:24,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:45:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-23 16:45:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:45:24,786 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:45:24,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:45:24,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:45:24,787 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:45:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:45:24,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1850581969, now seen corresponding path program 1 times [2021-02-23 16:45:24,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:45:24,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035374914] [2021-02-23 16:45:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:45:24,794 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:45:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:24,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:24,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:24,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:24,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:24,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:24,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,318 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:45:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:45:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:45:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:45:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:45:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:45:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:45:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:45:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:25,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:25,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:45:25,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035374914] [2021-02-23 16:45:25,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:45:25,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:45:25,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488560597] [2021-02-23 16:45:25,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:45:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:45:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:45:25,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:45:25,479 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-23 16:45:26,265 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:45:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:45:27,480 INFO L93 Difference]: Finished difference Result 400 states and 451 transitions. [2021-02-23 16:45:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:45:27,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:45:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:45:27,494 INFO L225 Difference]: With dead ends: 400 [2021-02-23 16:45:27,494 INFO L226 Difference]: Without dead ends: 291 [2021-02-23 16:45:27,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:45:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-02-23 16:45:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2021-02-23 16:45:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:45:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-23 16:45:27,605 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 148 [2021-02-23 16:45:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:45:27,606 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-23 16:45:27,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:45:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-23 16:45:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:45:27,609 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:45:27,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:45:27,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:45:27,610 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:45:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:45:27,611 INFO L82 PathProgramCache]: Analyzing trace with hash 93790275, now seen corresponding path program 1 times [2021-02-23 16:45:27,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:45:27,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273295171] [2021-02-23 16:45:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:45:27,615 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:45:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:27,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:27,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:27,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:27,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:27,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:27,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:27,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:27,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:27,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:27,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:27,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:27,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,063 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:45:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:45:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:45:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:45:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:45:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:45:28,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:45:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:45:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:45:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:45:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:45:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:28,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:28,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:45:28,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273295171] [2021-02-23 16:45:28,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:45:28,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:45:28,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094009727] [2021-02-23 16:45:28,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:45:28,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:45:28,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:45:28,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:45:28,239 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-23 16:45:28,990 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:45:29,439 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:45:29,836 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:45:30,221 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:30,617 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:30,981 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:32,092 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:45:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:45:35,028 INFO L93 Difference]: Finished difference Result 687 states and 802 transitions. [2021-02-23 16:45:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:45:35,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:45:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:45:35,035 INFO L225 Difference]: With dead ends: 687 [2021-02-23 16:45:35,035 INFO L226 Difference]: Without dead ends: 548 [2021-02-23 16:45:35,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:45:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-02-23 16:45:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 453. [2021-02-23 16:45:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-02-23 16:45:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 507 transitions. [2021-02-23 16:45:35,240 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 507 transitions. Word has length 161 [2021-02-23 16:45:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:45:35,241 INFO L480 AbstractCegarLoop]: Abstraction has 453 states and 507 transitions. [2021-02-23 16:45:35,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:45:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 507 transitions. [2021-02-23 16:45:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:45:35,244 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:45:35,244 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 16:45:35,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:45:35,245 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:45:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:45:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash 289496046, now seen corresponding path program 1 times [2021-02-23 16:45:35,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:45:35,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960077955] [2021-02-23 16:45:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:45:35,250 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:45:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:35,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:35,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:35,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:35,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:35,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:35,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:35,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:35,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:35,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:45:35,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,784 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:45:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:45:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:45:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:45:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:45:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:45:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:45:35,887 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:45:35,888 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:45:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:45:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:45:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:45:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:35,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:35,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:35,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:45:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:35,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:35,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:45:36,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960077955] [2021-02-23 16:45:36,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:45:36,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:45:36,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130853123] [2021-02-23 16:45:36,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:45:36,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:45:36,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:45:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:45:36,024 INFO L87 Difference]: Start difference. First operand 453 states and 507 transitions. Second operand 14 states. [2021-02-23 16:45:36,681 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:45:37,209 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:45:37,616 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:45:38,019 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:38,427 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:38,811 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:39,632 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:45:41,042 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:41,496 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:42,052 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:42,561 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:45:43,018 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:45:43,408 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:45:43,804 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:45:44,231 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:44,622 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:45,157 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:45,739 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:45:46,222 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:45:46,723 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:45:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:45:49,067 INFO L93 Difference]: Finished difference Result 1555 states and 1900 transitions. [2021-02-23 16:45:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:45:49,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:45:49,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:45:49,078 INFO L225 Difference]: With dead ends: 1555 [2021-02-23 16:45:49,078 INFO L226 Difference]: Without dead ends: 1217 [2021-02-23 16:45:49,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:45:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-23 16:45:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1070. [2021-02-23 16:45:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2021-02-23 16:45:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1238 transitions. [2021-02-23 16:45:49,577 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1238 transitions. Word has length 166 [2021-02-23 16:45:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:45:49,578 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1238 transitions. [2021-02-23 16:45:49,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:45:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1238 transitions. [2021-02-23 16:45:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:45:49,583 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:45:49,583 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 16:45:49,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:45:49,584 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:45:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:45:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1838016033, now seen corresponding path program 1 times [2021-02-23 16:45:49,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:45:49,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931078588] [2021-02-23 16:45:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:45:49,589 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:45:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:49,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:49,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:49,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:49,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:49,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:49,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:49,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:49,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:49,981 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:45:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:45:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:45:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:45:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:45:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:45:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:45:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:45:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:45:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:45:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:45:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:45:50,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:50,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:45:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:45:50,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931078588] [2021-02-23 16:45:50,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:45:50,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:45:50,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182753458] [2021-02-23 16:45:50,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:45:50,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:45:50,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:45:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:45:50,167 INFO L87 Difference]: Start difference. First operand 1070 states and 1238 transitions. Second operand 6 states. [2021-02-23 16:45:50,807 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:45:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:45:52,291 INFO L93 Difference]: Finished difference Result 1743 states and 2102 transitions. [2021-02-23 16:45:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:45:52,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:45:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:45:52,298 INFO L225 Difference]: With dead ends: 1743 [2021-02-23 16:45:52,298 INFO L226 Difference]: Without dead ends: 788 [2021-02-23 16:45:52,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:45:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-02-23 16:45:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 685. [2021-02-23 16:45:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2021-02-23 16:45:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 744 transitions. [2021-02-23 16:45:52,660 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 744 transitions. Word has length 171 [2021-02-23 16:45:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:45:52,661 INFO L480 AbstractCegarLoop]: Abstraction has 685 states and 744 transitions. [2021-02-23 16:45:52,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:45:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 744 transitions. [2021-02-23 16:45:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:45:52,666 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:45:52,667 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] [2021-02-23 16:45:52,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:45:52,667 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:45:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:45:52,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1528694846, now seen corresponding path program 1 times [2021-02-23 16:45:52,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:45:52,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684448301] [2021-02-23 16:45:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:45:53,364 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2021-02-23 16:45:53,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:53,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-02-23 16:45:53,963 WARN L202 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 116 [2021-02-23 16:45:53,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:45:53,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276