/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_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:41:34,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:41:34,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:41:34,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:41:34,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:41:34,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:41:34,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:41:34,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:41:34,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:41:34,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:41:34,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:41:34,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:41:34,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:41:34,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:41:34,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:41:34,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:41:34,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:41:34,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:41:34,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:41:34,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:41:34,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:41:34,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:41:34,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:41:34,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:41:34,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:41:34,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:41:34,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:41:34,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:41:34,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:41:34,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:41:34,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:41:34,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:41:34,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:41:34,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:41:34,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:41:34,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:41:34,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:41:34,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:41:34,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:41:34,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:41:34,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:41:34,373 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 16:41:34,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:41:34,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:41:34,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:41:34,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:41:34,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:41:34,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:41:34,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:41:34,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:41:34,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:41:34,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:41:34,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:41:34,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:41:34,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:41:34,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:41:34,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:41:34,395 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:41:34,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:41:34,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:41:34,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:41:34,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:41:34,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:41:34,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:41:34,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:41:34,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:41:34,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:41:34,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:41:34,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:41:34,888 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:41:34,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product15.cil.c [2021-02-23 16:41:35,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26f003e3/f2040fbb448a485ebc00dacd3fed1137/FLAG3ac8f3474 [2021-02-23 16:41:36,017 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:41:36,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product15.cil.c [2021-02-23 16:41:36,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26f003e3/f2040fbb448a485ebc00dacd3fed1137/FLAG3ac8f3474 [2021-02-23 16:41:36,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26f003e3/f2040fbb448a485ebc00dacd3fed1137 [2021-02-23 16:41:36,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:41:36,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:41:36,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:41:36,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:41:36,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:41:36,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:36,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521f4acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36, skipping insertion in model container [2021-02-23 16:41:36,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:36,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:41:36,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:41:36,538 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_product15.cil.c[1817,1830] [2021-02-23 16:41:36,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:41:36,689 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:41:36,712 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_product15.cil.c[1817,1830] [2021-02-23 16:41:36,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:41:36,867 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:41:36,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36 WrapperNode [2021-02-23 16:41:36,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:41:36,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:41:36,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:41:36,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:41:36,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:36,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:36,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:36,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:37,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:37,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:37,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (1/1) ... [2021-02-23 16:41:37,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:41:37,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:41:37,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:41:37,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:41:37,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (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 16:41:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:41:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:41:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:41:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:41:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:41:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:41:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:41:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:41:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:41:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:41:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:41:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:41:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:41:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:41:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:41:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:41:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:41:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:41:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:41:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:41:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:41:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:41:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:41:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:41:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:41:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:41:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:41:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:41:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:41:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:41:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:41:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:41:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:41:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:41:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:41:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:41:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:41:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:41:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:41:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:41:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:41:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:41:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:41:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:41:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:41:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:41:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:41:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:41:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:41:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:41:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:41:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:41:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:41:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:41:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:41:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:41:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:41:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:41:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:41:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:41:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:41:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:41:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:41:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:41:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:41:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:41:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:41:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:41:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:41:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:41:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:41:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:41:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:41:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:41:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:41:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:41:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:41:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:41:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:41:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:41:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:41:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:41:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:41:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:41:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:41:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:41:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:41:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:41:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:41:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:41:39,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:41:39,466 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:41:39,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:41:39 BoogieIcfgContainer [2021-02-23 16:41:39,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:41:39,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:41:39,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:41:39,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:41:39,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:41:36" (1/3) ... [2021-02-23 16:41:39,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4607eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:41:39, skipping insertion in model container [2021-02-23 16:41:39,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:36" (2/3) ... [2021-02-23 16:41:39,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4607eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:41:39, skipping insertion in model container [2021-02-23 16:41:39,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:41:39" (3/3) ... [2021-02-23 16:41:39,491 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product15.cil.c [2021-02-23 16:41:39,500 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:41:39,509 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:41:39,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:41:39,581 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:41:39,581 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:41:39,581 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:41:39,582 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:41:39,582 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:41:39,582 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:41:39,582 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:41:39,583 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:41:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-23 16:41:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:41:39,641 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:39,642 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 16:41:39,643 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:39,653 INFO L82 PathProgramCache]: Analyzing trace with hash 98157041, now seen corresponding path program 1 times [2021-02-23 16:41:39,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:39,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584416531] [2021-02-23 16:41:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:39,773 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:40,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:40,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:40,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:40,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,032 WARN L202 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:41:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:41:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:41,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:41,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:41,223 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 16:41:41,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584416531] [2021-02-23 16:41:41,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:41,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:41:41,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072725557] [2021-02-23 16:41:41,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:41:41,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:41:41,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:41:41,257 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-23 16:41:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:43,081 INFO L93 Difference]: Finished difference Result 421 states and 504 transitions. [2021-02-23 16:41:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:41:43,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:41:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:43,105 INFO L225 Difference]: With dead ends: 421 [2021-02-23 16:41:43,106 INFO L226 Difference]: Without dead ends: 270 [2021-02-23 16:41:43,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:41:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-23 16:41:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 229. [2021-02-23 16:41:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:41:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-23 16:41:43,361 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 147 [2021-02-23 16:41:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:43,366 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-23 16:41:43,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:41:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-23 16:41:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:41:43,381 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:43,382 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] [2021-02-23 16:41:43,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:41:43,383 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:43,384 INFO L82 PathProgramCache]: Analyzing trace with hash 841265213, now seen corresponding path program 1 times [2021-02-23 16:41:43,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:43,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10726909] [2021-02-23 16:41:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:43,399 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:43,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:43,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:43,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:43,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:43,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:43,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:43,958 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:41:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:41:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:44,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:44,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:44,077 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 16:41:44,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10726909] [2021-02-23 16:41:44,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:44,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:41:44,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306573040] [2021-02-23 16:41:44,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:41:44,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:44,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:41:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:41:44,081 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-23 16:41:44,995 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:41:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:46,027 INFO L93 Difference]: Finished difference Result 331 states and 370 transitions. [2021-02-23 16:41:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:41:46,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:41:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:46,033 INFO L225 Difference]: With dead ends: 331 [2021-02-23 16:41:46,033 INFO L226 Difference]: Without dead ends: 253 [2021-02-23 16:41:46,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:41:46,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-23 16:41:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2021-02-23 16:41:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:41:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-23 16:41:46,146 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 148 [2021-02-23 16:41:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:46,147 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-23 16:41:46,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:41:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-23 16:41:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:41:46,150 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:46,150 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 16:41:46,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:41:46,150 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1634241990, now seen corresponding path program 1 times [2021-02-23 16:41:46,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:46,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291734481] [2021-02-23 16:41:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:46,156 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:46,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:46,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:46,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:46,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:46,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:46,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:46,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,737 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:41:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:41:46,897 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:41:46,899 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:41:46,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:41:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:41:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:46,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:46,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:47,015 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 16:41:47,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291734481] [2021-02-23 16:41:47,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:47,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:41:47,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71149834] [2021-02-23 16:41:47,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:41:47,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:47,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:41:47,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:41:47,020 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-23 16:41:47,775 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:41:48,255 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:41:48,642 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:41:49,045 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:41:49,449 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:41:49,814 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:41:50,992 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:41:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:52,949 INFO L93 Difference]: Finished difference Result 554 states and 637 transitions. [2021-02-23 16:41:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:41:52,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:41:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:52,955 INFO L225 Difference]: With dead ends: 554 [2021-02-23 16:41:52,955 INFO L226 Difference]: Without dead ends: 450 [2021-02-23 16:41:52,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:41:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-02-23 16:41:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 387. [2021-02-23 16:41:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-23 16:41:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 431 transitions. [2021-02-23 16:41:53,174 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 431 transitions. Word has length 157 [2021-02-23 16:41:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:53,177 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 431 transitions. [2021-02-23 16:41:53,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:41:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 431 transitions. [2021-02-23 16:41:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:41:53,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:53,180 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 16:41:53,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:41:53,181 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:53,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:53,182 INFO L82 PathProgramCache]: Analyzing trace with hash -801439050, now seen corresponding path program 1 times [2021-02-23 16:41:53,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:53,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320608847] [2021-02-23 16:41:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:53,186 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:53,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:53,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:53,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:53,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:53,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:53,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:53,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:53,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:53,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:53,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,780 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:41:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:41:53,933 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:41:53,936 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:41:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:41:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:41:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:41:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:54,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:54,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:41:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,182 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 16:41:54,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320608847] [2021-02-23 16:41:54,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:54,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:41:54,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385643109] [2021-02-23 16:41:54,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:41:54,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:54,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:41:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:41:54,187 INFO L87 Difference]: Start difference. First operand 387 states and 431 transitions. Second operand 14 states. [2021-02-23 16:41:54,850 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:41:55,358 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:41:55,730 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:41:56,139 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:41:56,550 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:41:56,971 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:41:57,856 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:41:59,237 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:41:59,634 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:00,126 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:00,592 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:00,992 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:01,376 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:01,782 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:02,177 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:02,574 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:03,038 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:03,583 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:04,005 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:04,448 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:06,190 INFO L93 Difference]: Finished difference Result 1413 states and 1806 transitions. [2021-02-23 16:42:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:42:06,192 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-23 16:42:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:06,203 INFO L225 Difference]: With dead ends: 1413 [2021-02-23 16:42:06,203 INFO L226 Difference]: Without dead ends: 1141 [2021-02-23 16:42:06,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:42:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-02-23 16:42:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 868. [2021-02-23 16:42:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2021-02-23 16:42:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1004 transitions. [2021-02-23 16:42:06,666 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1004 transitions. Word has length 165 [2021-02-23 16:42:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:06,667 INFO L480 AbstractCegarLoop]: Abstraction has 868 states and 1004 transitions. [2021-02-23 16:42:06,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:42:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1004 transitions. [2021-02-23 16:42:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-23 16:42:06,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:06,672 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 16:42:06,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:42:06,672 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash -595296028, now seen corresponding path program 1 times [2021-02-23 16:42:06,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:06,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833694953] [2021-02-23 16:42:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:06,677 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:06,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:06,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:06,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:06,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:06,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:06,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:06,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:06,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:06,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:06,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:06,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:06,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,082 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:42:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:42:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:42:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:42:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 16:42:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,241 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 16:42:07,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833694953] [2021-02-23 16:42:07,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:07,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:42:07,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860310090] [2021-02-23 16:42:07,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:42:07,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:07,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:42:07,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:42:07,244 INFO L87 Difference]: Start difference. First operand 868 states and 1004 transitions. Second operand 6 states. [2021-02-23 16:42:07,943 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:09,010 INFO L93 Difference]: Finished difference Result 1430 states and 1706 transitions. [2021-02-23 16:42:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:42:09,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-23 16:42:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:09,017 INFO L225 Difference]: With dead ends: 1430 [2021-02-23 16:42:09,018 INFO L226 Difference]: Without dead ends: 677 [2021-02-23 16:42:09,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:42:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-02-23 16:42:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 643. [2021-02-23 16:42:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-02-23 16:42:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 702 transitions. [2021-02-23 16:42:09,393 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 702 transitions. Word has length 175 [2021-02-23 16:42:09,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:09,394 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 702 transitions. [2021-02-23 16:42:09,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:42:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 702 transitions. [2021-02-23 16:42:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:42:09,400 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:09,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:42:09,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:42:09,401 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash -466231491, now seen corresponding path program 1 times [2021-02-23 16:42:09,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:09,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115113077] [2021-02-23 16:42:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY