/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_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:27:46,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:27:46,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:27:46,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:27:46,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:27:46,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:27:46,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:27:46,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:27:46,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:27:46,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:27:46,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:27:46,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:27:46,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:27:46,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:27:46,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:27:46,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:27:46,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:27:46,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:27:46,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:27:46,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:27:46,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:27:46,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:27:46,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:27:46,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:27:46,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:27:46,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:27:46,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:27:46,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:27:46,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:27:46,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:27:46,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:27:46,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:27:46,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:27:46,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:27:46,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:27:46,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:27:46,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:27:46,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:27:46,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:27:46,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:27:46,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:27:46,159 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 16:27:46,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:27:46,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:27:46,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:27:46,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:27:46,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:27:46,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:27:46,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:27:46,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:27:46,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:27:46,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:27:46,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:27:46,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:27:46,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:27:46,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:27:46,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:27:46,184 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:27:46,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:27:46,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:27:46,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:46,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:27:46,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:27:46,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:27:46,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:27:46,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:27:46,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:27:46,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:27:46,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:27:46,632 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:27:46,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product04.cil.c [2021-02-23 16:27:46,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33900ec03/44d126e59aae4d12854e5b6adbb8d758/FLAG42f1234ba [2021-02-23 16:27:47,328 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:27:47,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product04.cil.c [2021-02-23 16:27:47,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33900ec03/44d126e59aae4d12854e5b6adbb8d758/FLAG42f1234ba [2021-02-23 16:27:47,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33900ec03/44d126e59aae4d12854e5b6adbb8d758 [2021-02-23 16:27:47,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:27:47,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:27:47,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:47,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:27:47,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:27:47,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282cd639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:47, skipping insertion in model container [2021-02-23 16:27:47,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:47" (1/1) ... [2021-02-23 16:27:47,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:27:47,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:27:48,013 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_product04.cil.c[16373,16386] [2021-02-23 16:27:48,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:48,030 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:27:48,116 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_product04.cil.c[16373,16386] [2021-02-23 16:27:48,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:48,154 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:27:48,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48 WrapperNode [2021-02-23 16:27:48,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:48,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:27:48,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:27:48,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:27:48,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (1/1) ... [2021-02-23 16:27:48,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:27:48,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:27:48,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:27:48,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:27:48,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (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 16:27:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:27:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:27:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:27:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:27:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:27:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:27:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:27:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:27:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:27:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:27:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:27:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:27:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:27:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:27:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:27:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:27:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:27:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:27:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:27:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:27:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:27:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:27:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:27:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:27:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:27:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:27:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:27:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:27:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:27:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:27:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:27:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:27:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:27:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:27:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:27:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:27:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:27:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:27:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:27:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:27:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:27:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:27:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:27:49,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:27:49,602 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:27:49,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:49 BoogieIcfgContainer [2021-02-23 16:27:49,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:27:49,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:27:49,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:27:49,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:27:49,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:27:47" (1/3) ... [2021-02-23 16:27:49,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba0d976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:49, skipping insertion in model container [2021-02-23 16:27:49,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:48" (2/3) ... [2021-02-23 16:27:49,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba0d976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:49, skipping insertion in model container [2021-02-23 16:27:49,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:49" (3/3) ... [2021-02-23 16:27:49,615 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product04.cil.c [2021-02-23 16:27:49,623 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:27:49,629 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:27:49,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:27:49,673 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:27:49,674 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:27:49,674 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:27:49,674 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:27:49,674 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:27:49,674 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:27:49,674 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:27:49,675 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:27:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states. [2021-02-23 16:27:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:27:49,715 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:49,716 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 16:27:49,716 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:49,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1554005196, now seen corresponding path program 1 times [2021-02-23 16:27:49,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:49,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488354799] [2021-02-23 16:27:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:49,815 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,475 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:27:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:27:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:50,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:50,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:50,698 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 16:27:50,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488354799] [2021-02-23 16:27:50,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:50,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:27:50,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498547048] [2021-02-23 16:27:50,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:27:50,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:50,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:27:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:27:50,724 INFO L87 Difference]: Start difference. First operand 260 states. Second operand 3 states. [2021-02-23 16:27:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:52,005 INFO L93 Difference]: Finished difference Result 378 states and 453 transitions. [2021-02-23 16:27:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:27:52,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:27:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:52,031 INFO L225 Difference]: With dead ends: 378 [2021-02-23 16:27:52,031 INFO L226 Difference]: Without dead ends: 248 [2021-02-23 16:27:52,036 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 16:27:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-23 16:27:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 208. [2021-02-23 16:27:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2021-02-23 16:27:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2021-02-23 16:27:52,230 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 147 [2021-02-23 16:27:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:52,233 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2021-02-23 16:27:52,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:27:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2021-02-23 16:27:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:27:52,246 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:52,247 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 16:27:52,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:27:52,248 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:52,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1921709906, now seen corresponding path program 1 times [2021-02-23 16:27:52,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:52,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416238260] [2021-02-23 16:27:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:52,256 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:52,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,740 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:27:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:27:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:52,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:52,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:52,864 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 16:27:52,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416238260] [2021-02-23 16:27:52,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:52,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:27:52,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862850363] [2021-02-23 16:27:52,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:27:52,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:52,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:27:52,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:27:52,867 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 4 states. [2021-02-23 16:27:53,616 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:27:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:54,272 INFO L93 Difference]: Finished difference Result 281 states and 313 transitions. [2021-02-23 16:27:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:27:54,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:27:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:54,276 INFO L225 Difference]: With dead ends: 281 [2021-02-23 16:27:54,276 INFO L226 Difference]: Without dead ends: 231 [2021-02-23 16:27:54,278 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 16:27:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-23 16:27:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 198. [2021-02-23 16:27:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-23 16:27:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2021-02-23 16:27:54,379 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 148 [2021-02-23 16:27:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:54,380 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2021-02-23 16:27:54,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:27:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2021-02-23 16:27:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:27:54,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:54,382 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 16:27:54,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:27:54,383 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1710187102, now seen corresponding path program 1 times [2021-02-23 16:27:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:54,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728561136] [2021-02-23 16:27:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:54,387 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:54,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,786 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:27:54,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:27:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:27:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:27:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:27:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:54,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:54,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:54,978 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 16:27:54,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728561136] [2021-02-23 16:27:54,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:54,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:27:54,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628377872] [2021-02-23 16:27:54,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:27:54,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:54,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:27:54,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:27:54,981 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand 10 states. [2021-02-23 16:27:55,661 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:56,079 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:27:56,407 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:27:56,747 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:57,125 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:27:57,444 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:58,474 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:00,032 INFO L93 Difference]: Finished difference Result 511 states and 595 transitions. [2021-02-23 16:28:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:28:00,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:28:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:00,038 INFO L225 Difference]: With dead ends: 511 [2021-02-23 16:28:00,038 INFO L226 Difference]: Without dead ends: 428 [2021-02-23 16:28:00,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:28:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-02-23 16:28:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 329. [2021-02-23 16:28:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2021-02-23 16:28:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 361 transitions. [2021-02-23 16:28:00,196 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 361 transitions. Word has length 161 [2021-02-23 16:28:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:00,197 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 361 transitions. [2021-02-23 16:28:00,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:28:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 361 transitions. [2021-02-23 16:28:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-23 16:28:00,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:00,199 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] [2021-02-23 16:28:00,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:28:00,200 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:00,200 INFO L82 PathProgramCache]: Analyzing trace with hash 54189651, now seen corresponding path program 1 times [2021-02-23 16:28:00,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:00,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806946545] [2021-02-23 16:28:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:00,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:00,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,654 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:28:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:00,756 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:28:00,757 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:28:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:28:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:28:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:28:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 16:28:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:00,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:00,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:00,885 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 16:28:00,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806946545] [2021-02-23 16:28:00,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:00,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:28:00,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91231330] [2021-02-23 16:28:00,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:28:00,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:28:00,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:28:00,888 INFO L87 Difference]: Start difference. First operand 329 states and 361 transitions. Second operand 14 states. [2021-02-23 16:28:01,483 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:01,950 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:02,328 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:02,723 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:03,145 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:03,502 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:04,288 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:05,347 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:05,747 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:06,149 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:06,530 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:06,887 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:07,198 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:07,559 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:07,915 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:08,280 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:08,648 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:09,065 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:09,454 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:09,860 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:11,063 INFO L93 Difference]: Finished difference Result 1017 states and 1238 transitions. [2021-02-23 16:28:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:28:11,064 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2021-02-23 16:28:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:11,071 INFO L225 Difference]: With dead ends: 1017 [2021-02-23 16:28:11,071 INFO L226 Difference]: Without dead ends: 803 [2021-02-23 16:28:11,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:28:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-02-23 16:28:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 690. [2021-02-23 16:28:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2021-02-23 16:28:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 788 transitions. [2021-02-23 16:28:11,447 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 788 transitions. Word has length 164 [2021-02-23 16:28:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:11,448 INFO L480 AbstractCegarLoop]: Abstraction has 690 states and 788 transitions. [2021-02-23 16:28:11,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:28:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 788 transitions. [2021-02-23 16:28:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:28:11,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:11,452 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] [2021-02-23 16:28:11,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:28:11,453 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1540539835, now seen corresponding path program 1 times [2021-02-23 16:28:11,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:11,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424487725] [2021-02-23 16:28:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:11,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,805 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:28:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:28:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:28:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:28:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:28:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:11,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:11,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:11,945 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 16:28:11,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424487725] [2021-02-23 16:28:11,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:11,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:28:11,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250284966] [2021-02-23 16:28:11,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:28:11,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:11,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:28:11,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:28:11,947 INFO L87 Difference]: Start difference. First operand 690 states and 788 transitions. Second operand 6 states. [2021-02-23 16:28:12,520 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:13,684 INFO L93 Difference]: Finished difference Result 1291 states and 1529 transitions. [2021-02-23 16:28:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:28:13,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2021-02-23 16:28:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:13,689 INFO L225 Difference]: With dead ends: 1291 [2021-02-23 16:28:13,689 INFO L226 Difference]: Without dead ends: 716 [2021-02-23 16:28:13,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:28:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-02-23 16:28:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 625. [2021-02-23 16:28:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2021-02-23 16:28:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 684 transitions. [2021-02-23 16:28:13,963 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 684 transitions. Word has length 169 [2021-02-23 16:28:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:13,963 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 684 transitions. [2021-02-23 16:28:13,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:28:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 684 transitions. [2021-02-23 16:28:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-23 16:28:13,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:13,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:13,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:28:13,969 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:13,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1454624843, now seen corresponding path program 1 times [2021-02-23 16:28:13,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:13,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217307140] [2021-02-23 16:28:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:14,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:14,494 WARN L202 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2021-02-23 16:28:14,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-02-23 16:28:14,936 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2021-02-23 16:28:14,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239