/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_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:27:54,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:27:54,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:27:54,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:27:54,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:27:54,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:27:54,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:27:54,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:27:54,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:27:54,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:27:54,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:27:54,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:27:54,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:27:54,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:27:54,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:27:54,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:27:54,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:27:54,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:27:54,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:27:54,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:27:54,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:27:54,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:27:54,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:27:54,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:27:54,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:27:54,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:27:54,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:27:54,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:27:54,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:27:54,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:27:54,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:27:54,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:27:54,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:27:54,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:27:54,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:27:54,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:27:54,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:27:54,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:27:54,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:27:54,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:27:54,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:27:54,610 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 16:27:54,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:27:54,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:27:54,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:27:54,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:27:54,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:27:54,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:27:54,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:27:54,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:27:54,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:27:54,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:27:54,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:27:54,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:27:54,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:27:54,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:27:54,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:27:54,646 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:27:54,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:27:54,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:27:54,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:54,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:27:54,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:27:54,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:27:54,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:27:55,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:27:55,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:27:55,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:27:55,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:27:55,053 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:27:55,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product05.cil.c [2021-02-23 16:27:55,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f75cef50/7f0285c83dcf4accbb4af36593b62ac3/FLAG5d5c8247d [2021-02-23 16:27:55,739 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:27:55,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product05.cil.c [2021-02-23 16:27:55,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f75cef50/7f0285c83dcf4accbb4af36593b62ac3/FLAG5d5c8247d [2021-02-23 16:27:56,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f75cef50/7f0285c83dcf4accbb4af36593b62ac3 [2021-02-23 16:27:56,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:27:56,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:27:56,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:56,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:27:56,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:27:56,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c90b38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56, skipping insertion in model container [2021-02-23 16:27:56,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:27:56,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:27:56,554 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_product05.cil.c[16318,16331] [2021-02-23 16:27:56,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:56,572 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:27:56,665 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_product05.cil.c[16318,16331] [2021-02-23 16:27:56,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:56,702 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:27:56,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56 WrapperNode [2021-02-23 16:27:56,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:56,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:27:56,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:27:56,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:27:56,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... [2021-02-23 16:27:56,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:27:56,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:27:56,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:27:56,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:27:56,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:27:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:27:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:27:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:27:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:27:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:27:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:27:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:27:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:27:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:27:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:27:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:27:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:27:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:27:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:27:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:27:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:27:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:27:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:27:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:27:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:27:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:27:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:27:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:27:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:27:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:27:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:27:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:27:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:27:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:27:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:27:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:27:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:27:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:27:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:27:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:27:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:27:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:27:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:27:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:27:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:27:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:27:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:27:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:27:58,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:27:58,289 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:27:58,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:58 BoogieIcfgContainer [2021-02-23 16:27:58,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:27:58,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:27:58,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:27:58,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:27:58,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:27:56" (1/3) ... [2021-02-23 16:27:58,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b88390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:58, skipping insertion in model container [2021-02-23 16:27:58,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:56" (2/3) ... [2021-02-23 16:27:58,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b88390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:58, skipping insertion in model container [2021-02-23 16:27:58,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:58" (3/3) ... [2021-02-23 16:27:58,305 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product05.cil.c [2021-02-23 16:27:58,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:27:58,318 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:27:58,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:27:58,372 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:27:58,372 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:27:58,372 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:27:58,372 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:27:58,372 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:27:58,372 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:27:58,373 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:27:58,373 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:27:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2021-02-23 16:27:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:27:58,434 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:58,435 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 16:27:58,436 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:58,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:58,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1495387643, now seen corresponding path program 1 times [2021-02-23 16:27:58,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:58,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987046562] [2021-02-23 16:27:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:58,547 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:58,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:58,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:58,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:58,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,301 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:27:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:27:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:59,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:59,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:59,475 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 16:27:59,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987046562] [2021-02-23 16:27:59,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:59,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:27:59,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387581531] [2021-02-23 16:27:59,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:27:59,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:59,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:27:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:27:59,503 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 3 states. [2021-02-23 16:28:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:01,018 INFO L93 Difference]: Finished difference Result 407 states and 485 transitions. [2021-02-23 16:28:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:28:01,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:28:01,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:01,037 INFO L225 Difference]: With dead ends: 407 [2021-02-23 16:28:01,037 INFO L226 Difference]: Without dead ends: 262 [2021-02-23 16:28:01,042 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 16:28:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-23 16:28:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2021-02-23 16:28:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:28:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 239 transitions. [2021-02-23 16:28:01,182 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 239 transitions. Word has length 147 [2021-02-23 16:28:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:01,183 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 239 transitions. [2021-02-23 16:28:01,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:28:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 239 transitions. [2021-02-23 16:28:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:28:01,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:01,188 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 16:28:01,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:28:01,189 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:01,189 INFO L82 PathProgramCache]: Analyzing trace with hash 587253761, now seen corresponding path program 1 times [2021-02-23 16:28:01,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:01,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810199629] [2021-02-23 16:28:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:01,194 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:01,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,661 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:28:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:28:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:01,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:01,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:01,762 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 16:28:01,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810199629] [2021-02-23 16:28:01,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:01,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:28:01,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314484588] [2021-02-23 16:28:01,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:28:01,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:01,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:28:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:28:01,766 INFO L87 Difference]: Start difference. First operand 223 states and 239 transitions. Second operand 4 states. [2021-02-23 16:28:02,530 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:03,341 INFO L93 Difference]: Finished difference Result 323 states and 359 transitions. [2021-02-23 16:28:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:28:03,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:28:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:03,350 INFO L225 Difference]: With dead ends: 323 [2021-02-23 16:28:03,351 INFO L226 Difference]: Without dead ends: 245 [2021-02-23 16:28:03,353 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 16:28:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-23 16:28:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-23 16:28:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-23 16:28:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2021-02-23 16:28:03,441 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 148 [2021-02-23 16:28:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:03,442 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2021-02-23 16:28:03,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:28:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2021-02-23 16:28:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:28:03,445 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:03,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:28:03,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:28:03,446 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1835193443, now seen corresponding path program 1 times [2021-02-23 16:28:03,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:03,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071418919] [2021-02-23 16:28:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:03,450 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:03,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:03,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:03,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:03,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:03,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:03,917 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:03,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:03,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:28:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:03,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:03,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:03,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:04,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:04,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:04,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:04,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:04,029 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:28:04,031 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:28:04,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:04,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:04,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:28:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:04,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:04,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:04,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:28:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:04,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:04,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:04,100 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 16:28:04,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071418919] [2021-02-23 16:28:04,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:04,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:28:04,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671107250] [2021-02-23 16:28:04,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:28:04,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:28:04,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:28:04,103 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 9 states. [2021-02-23 16:28:04,718 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:05,216 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:05,619 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:05,989 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:06,411 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:06,813 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:08,031 INFO L93 Difference]: Finished difference Result 343 states and 384 transitions. [2021-02-23 16:28:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:28:08,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:28:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:08,036 INFO L225 Difference]: With dead ends: 343 [2021-02-23 16:28:08,036 INFO L226 Difference]: Without dead ends: 245 [2021-02-23 16:28:08,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:28:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-23 16:28:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-23 16:28:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-23 16:28:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 225 transitions. [2021-02-23 16:28:08,116 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 225 transitions. Word has length 157 [2021-02-23 16:28:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:08,117 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 225 transitions. [2021-02-23 16:28:08,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:28:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 225 transitions. [2021-02-23 16:28:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:28:08,120 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:08,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:28:08,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:28:08,121 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:08,121 INFO L82 PathProgramCache]: Analyzing trace with hash 101529302, now seen corresponding path program 1 times [2021-02-23 16:28:08,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:08,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618496382] [2021-02-23 16:28:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:08,125 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:08,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:08,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:08,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:08,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:08,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:08,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:08,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:08,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:08,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:08,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,667 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:28:08,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:08,785 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:28:08,786 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:28:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:28:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:28:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:28:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:08,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:08,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:28:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:08,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:08,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:08,931 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 16:28:08,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618496382] [2021-02-23 16:28:08,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:08,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:28:08,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148521668] [2021-02-23 16:28:08,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:28:08,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:08,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:28:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:28:08,933 INFO L87 Difference]: Start difference. First operand 213 states and 225 transitions. Second operand 14 states. [2021-02-23 16:28:09,600 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:10,091 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:10,534 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:10,934 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:11,336 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:11,725 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:12,516 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:13,650 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:14,064 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:14,557 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:14,997 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:15,385 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:15,754 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:16,143 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:16,537 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:16,888 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:17,315 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:17,866 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:18,252 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:18,716 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:19,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:19,981 INFO L93 Difference]: Finished difference Result 586 states and 704 transitions. [2021-02-23 16:28:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:28:19,983 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-23 16:28:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:19,989 INFO L225 Difference]: With dead ends: 586 [2021-02-23 16:28:19,989 INFO L226 Difference]: Without dead ends: 488 [2021-02-23 16:28:19,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:28:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-02-23 16:28:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 385. [2021-02-23 16:28:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2021-02-23 16:28:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 423 transitions. [2021-02-23 16:28:20,180 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 423 transitions. Word has length 165 [2021-02-23 16:28:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:20,181 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 423 transitions. [2021-02-23 16:28:20,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:28:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 423 transitions. [2021-02-23 16:28:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-23 16:28:20,184 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:20,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:28:20,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:28:20,185 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:20,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2033040578, now seen corresponding path program 1 times [2021-02-23 16:28:20,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:20,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986832468] [2021-02-23 16:28:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:20,189 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:20,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:20,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:20,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:20,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:20,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,567 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:20,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:28:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:28:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:28:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:28:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:28:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 16:28:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:20,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:20,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:20,716 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 16:28:20,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986832468] [2021-02-23 16:28:20,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:20,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:28:20,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100321186] [2021-02-23 16:28:20,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:28:20,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:20,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:28:20,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:28:20,718 INFO L87 Difference]: Start difference. First operand 385 states and 423 transitions. Second operand 6 states. [2021-02-23 16:28:21,292 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:22,025 INFO L93 Difference]: Finished difference Result 587 states and 667 transitions. [2021-02-23 16:28:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:28:22,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-23 16:28:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:22,028 INFO L225 Difference]: With dead ends: 587 [2021-02-23 16:28:22,028 INFO L226 Difference]: Without dead ends: 317 [2021-02-23 16:28:22,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:28:22,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-23 16:28:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2021-02-23 16:28:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-23 16:28:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 313 transitions. [2021-02-23 16:28:22,142 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 313 transitions. Word has length 175 [2021-02-23 16:28:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:22,143 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 313 transitions. [2021-02-23 16:28:22,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:28:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 313 transitions. [2021-02-23 16:28:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 16:28:22,146 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:22,147 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, 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] [2021-02-23 16:28:22,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:28:22,147 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:22,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1368335942, now seen corresponding path program 1 times [2021-02-23 16:28:22,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:22,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83153916] [2021-02-23 16:28:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:22,690 WARN L202 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 115 [2021-02-23 16:28:22,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:22,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-02-23 16:28:23,186 WARN L202 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2021-02-23 16:28:23,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:23,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258