/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:43:37,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:43:37,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:43:37,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:43:37,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:43:37,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:43:37,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:43:37,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:43:37,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:43:37,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:43:37,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:43:37,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:43:37,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:43:37,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:43:37,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:43:37,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:43:37,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:43:37,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:43:37,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:43:37,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:43:37,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:43:37,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:43:37,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:43:37,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:43:37,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:43:37,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:43:37,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:43:37,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:43:37,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:43:37,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:43:37,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:43:37,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:43:37,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:43:37,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:43:37,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:43:37,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:43:37,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:43:37,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:43:37,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:43:37,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:43:37,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:43:37,309 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 16:43:37,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:43:37,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:43:37,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:43:37,345 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:43:37,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:43:37,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:43:37,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:43:37,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:43:37,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:43:37,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:43:37,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:43:37,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:43:37,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:43:37,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:43:37,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:43:37,351 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:43:37,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:43:37,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:43:37,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:43:37,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:43:37,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:43:37,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:43:37,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:43:37,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:43:37,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:43:37,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:43:37,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:43:37,946 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:43:37,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product21.cil.c [2021-02-23 16:43:38,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93148d205/29edbfdf29204e229964821073aaf696/FLAGf583ef503 [2021-02-23 16:43:38,934 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:43:38,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product21.cil.c [2021-02-23 16:43:38,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93148d205/29edbfdf29204e229964821073aaf696/FLAGf583ef503 [2021-02-23 16:43:39,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93148d205/29edbfdf29204e229964821073aaf696 [2021-02-23 16:43:39,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:43:39,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:43:39,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:43:39,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:43:39,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:43:39,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:43:39" (1/1) ... [2021-02-23 16:43:39,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35654c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:39, skipping insertion in model container [2021-02-23 16:43:39,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:43:39" (1/1) ... [2021-02-23 16:43:39,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:43:39,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:43:39,738 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_product21.cil.c[4740,4753] [2021-02-23 16:43:39,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:43:39,953 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:43:39,984 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_product21.cil.c[4740,4753] [2021-02-23 16:43:40,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:43:40,083 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:43:40,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40 WrapperNode [2021-02-23 16:43:40,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:43:40,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:43:40,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:43:40,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:43:40,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (1/1) ... [2021-02-23 16:43:40,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:43:40,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:43:40,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:43:40,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:43:40,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (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 16:43:40,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:43:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:43:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:43:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:43:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:43:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:43:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:43:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:43:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:43:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:43:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:43:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:43:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:43:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:43:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:43:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:43:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:43:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:43:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:43:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:43:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:43:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:43:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:43:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:43:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:43:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:43:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:43:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:43:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:43:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:43:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:43:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:43:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:43:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:43:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:43:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:43:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:43:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:43:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:43:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:43:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:43:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:43:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:43:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:43:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:43:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:43:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:43:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:43:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:43:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:43:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:43:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:43:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:43:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:43:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:43:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:43:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:43:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:43:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:43:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:43:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:43:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:43:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:43:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:43:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:43:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:43:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:43:41,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:43:41,924 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:43:41,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:43:41 BoogieIcfgContainer [2021-02-23 16:43:41,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:43:41,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:43:41,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:43:41,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:43:41,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:43:39" (1/3) ... [2021-02-23 16:43:41,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e626c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:43:41, skipping insertion in model container [2021-02-23 16:43:41,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:43:40" (2/3) ... [2021-02-23 16:43:41,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e626c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:43:41, skipping insertion in model container [2021-02-23 16:43:41,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:43:41" (3/3) ... [2021-02-23 16:43:41,942 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product21.cil.c [2021-02-23 16:43:41,954 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:43:41,964 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:43:41,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:43:42,023 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:43:42,023 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:43:42,024 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:43:42,024 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:43:42,024 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:43:42,024 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:43:42,024 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:43:42,024 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:43:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2021-02-23 16:43:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:43:42,078 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:43:42,079 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 16:43:42,082 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:43:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:43:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1191942639, now seen corresponding path program 1 times [2021-02-23 16:43:42,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:43:42,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857751649] [2021-02-23 16:43:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:43:42,200 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:43:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:42,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:42,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:42,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:42,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,120 WARN L202 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:43:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:43:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:43:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:43:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:43:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:43:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:43:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:43:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:43,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:43,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:43,459 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 16:43:43,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857751649] [2021-02-23 16:43:43,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:43:43,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:43:43,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403139621] [2021-02-23 16:43:43,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:43:43,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:43:43,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:43:43,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:43:43,496 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2021-02-23 16:43:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:43:45,335 INFO L93 Difference]: Finished difference Result 471 states and 560 transitions. [2021-02-23 16:43:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:43:45,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:43:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:43:45,356 INFO L225 Difference]: With dead ends: 471 [2021-02-23 16:43:45,356 INFO L226 Difference]: Without dead ends: 295 [2021-02-23 16:43:45,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:43:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-23 16:43:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 254. [2021-02-23 16:43:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:43:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 275 transitions. [2021-02-23 16:43:45,571 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 275 transitions. Word has length 147 [2021-02-23 16:43:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:43:45,572 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 275 transitions. [2021-02-23 16:43:45,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:43:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 275 transitions. [2021-02-23 16:43:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:43:45,577 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:43:45,577 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 16:43:45,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:43:45,578 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:43:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:43:45,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1477241261, now seen corresponding path program 1 times [2021-02-23 16:43:45,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:43:45,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699649190] [2021-02-23 16:43:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:43:45,585 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:43:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:45,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:45,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:45,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:45,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:45,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:45,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,150 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:43:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:43:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:43:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:43:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:43:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:43:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:43:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:43:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:46,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:46,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:46,315 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 16:43:46,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699649190] [2021-02-23 16:43:46,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:43:46,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:43:46,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139676543] [2021-02-23 16:43:46,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:43:46,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:43:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:43:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:43:46,319 INFO L87 Difference]: Start difference. First operand 254 states and 275 transitions. Second operand 4 states. [2021-02-23 16:43:47,142 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:43:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:43:48,312 INFO L93 Difference]: Finished difference Result 387 states and 434 transitions. [2021-02-23 16:43:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:43:48,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:43:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:43:48,318 INFO L225 Difference]: With dead ends: 387 [2021-02-23 16:43:48,318 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 16:43:48,321 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 16:43:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 16:43:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-23 16:43:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-23 16:43:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2021-02-23 16:43:48,440 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 148 [2021-02-23 16:43:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:43:48,441 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2021-02-23 16:43:48,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:43:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2021-02-23 16:43:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:43:48,444 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:43:48,444 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 16:43:48,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:43:48,445 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:43:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:43:48,446 INFO L82 PathProgramCache]: Analyzing trace with hash 73698318, now seen corresponding path program 1 times [2021-02-23 16:43:48,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:43:48,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669190792] [2021-02-23 16:43:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:43:48,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:43:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:48,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:48,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:48,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:48,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:48,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:48,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:48,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:48,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:48,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:48,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:48,938 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:43:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:43:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:43:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:43:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:43:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:43:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:43:49,095 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:43:49,097 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:43:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:43:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:43:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:43:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:49,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:49,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:49,179 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 16:43:49,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669190792] [2021-02-23 16:43:49,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:43:49,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:43:49,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120858471] [2021-02-23 16:43:49,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:43:49,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:43:49,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:43:49,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:43:49,183 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 9 states. [2021-02-23 16:43:49,850 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:43:50,257 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:43:50,606 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:43:50,934 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:43:51,286 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:43:51,598 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:43:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:43:53,349 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2021-02-23 16:43:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:43:53,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:43:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:43:53,356 INFO L225 Difference]: With dead ends: 407 [2021-02-23 16:43:53,356 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 16:43:53,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:43:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 16:43:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-23 16:43:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-23 16:43:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 261 transitions. [2021-02-23 16:43:53,519 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 261 transitions. Word has length 157 [2021-02-23 16:43:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:43:53,520 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 261 transitions. [2021-02-23 16:43:53,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:43:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 261 transitions. [2021-02-23 16:43:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:43:53,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:43:53,524 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] [2021-02-23 16:43:53,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:43:53,525 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:43:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:43:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash -29734683, now seen corresponding path program 1 times [2021-02-23 16:43:53,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:43:53,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073411634] [2021-02-23 16:43:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:43:53,530 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:43:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:53,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:53,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:53,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:53,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:53,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:53,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:53,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:53,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:53,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:53,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:43:53,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:53,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:53,942 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:43:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:43:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:43:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:43:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:43:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:43:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:43:54,063 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:43:54,065 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:43:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:43:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:43:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:43:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:43:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:43:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:54,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:43:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:43:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:43:54,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:43:54,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:43:54,334 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 16:43:54,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073411634] [2021-02-23 16:43:54,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:43:54,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:43:54,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372490143] [2021-02-23 16:43:54,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:43:54,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:43:54,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:43:54,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:43:54,337 INFO L87 Difference]: Start difference. First operand 244 states and 261 transitions. Second operand 14 states. [2021-02-23 16:43:55,129 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:43:55,616 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:43:55,943 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:43:56,254 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:43:56,616 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:43:56,951 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:43:57,750 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:43:59,455 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:43:59,838 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:44:00,358 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:44:00,769 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:44:01,094 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:44:01,430 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:44:01,776 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:44:02,106 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:44:02,431 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:44:02,876 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:44:03,333 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:44:03,707 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:44:04,146 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:44:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:44:05,572 INFO L93 Difference]: Finished difference Result 716 states and 857 transitions. [2021-02-23 16:44:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:44:05,572 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 170 [2021-02-23 16:44:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:44:05,579 INFO L225 Difference]: With dead ends: 716 [2021-02-23 16:44:05,579 INFO L226 Difference]: Without dead ends: 587 [2021-02-23 16:44:05,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:44:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-02-23 16:44:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 480. [2021-02-23 16:44:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2021-02-23 16:44:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 534 transitions. [2021-02-23 16:44:05,824 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 534 transitions. Word has length 170 [2021-02-23 16:44:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:44:05,826 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 534 transitions. [2021-02-23 16:44:05,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:44:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 534 transitions. [2021-02-23 16:44:05,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-23 16:44:05,829 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:44:05,830 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 16:44:05,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:44:05,830 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:44:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:44:05,831 INFO L82 PathProgramCache]: Analyzing trace with hash -257600859, now seen corresponding path program 1 times [2021-02-23 16:44:05,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:44:05,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317976786] [2021-02-23 16:44:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:44:05,835 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:44:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:05,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:05,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:44:05,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:05,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:44:05,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:05,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:44:05,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:05,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:44:05,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:05,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:44:05,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:05,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,219 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:44:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:44:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:44:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:44:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:44:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:44:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:44:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:44:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:44:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:44:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:44:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:44:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 16:44:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:44:06,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:06,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:44:06,503 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 16:44:06,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317976786] [2021-02-23 16:44:06,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:44:06,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:44:06,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790788099] [2021-02-23 16:44:06,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:44:06,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:44:06,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:44:06,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:44:06,510 INFO L87 Difference]: Start difference. First operand 480 states and 534 transitions. Second operand 6 states. [2021-02-23 16:44:07,158 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:44:08,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:44:08,051 INFO L93 Difference]: Finished difference Result 697 states and 800 transitions. [2021-02-23 16:44:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:44:08,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-23 16:44:08,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:44:08,055 INFO L225 Difference]: With dead ends: 697 [2021-02-23 16:44:08,055 INFO L226 Difference]: Without dead ends: 332 [2021-02-23 16:44:08,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:44:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-02-23 16:44:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 311. [2021-02-23 16:44:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-02-23 16:44:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 328 transitions. [2021-02-23 16:44:08,226 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 328 transitions. Word has length 175 [2021-02-23 16:44:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:44:08,227 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 328 transitions. [2021-02-23 16:44:08,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:44:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 328 transitions. [2021-02-23 16:44:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-02-23 16:44:08,231 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:44:08,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:44:08,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:44:08,232 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:44:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:44:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1851708491, now seen corresponding path program 1 times [2021-02-23 16:44:08,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:44:08,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12333166] [2021-02-23 16:44:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:44:08,801 WARN L202 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2021-02-23 16:44:08,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:08,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-02-23 16:44:09,265 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2021-02-23 16:44:09,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:09,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-02-23 16:44:09,712 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2021-02-23 16:44:09,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:44:09,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 256