/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_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:10:52,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:10:52,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:10:52,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:10:52,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:10:52,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:10:52,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:10:52,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:10:52,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:10:52,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:10:52,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:10:52,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:10:52,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:10:52,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:10:52,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:10:52,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:10:52,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:10:52,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:10:52,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:10:52,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:10:52,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:10:52,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:10:52,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:10:52,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:10:52,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:10:52,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:10:52,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:10:52,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:10:52,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:10:52,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:10:52,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:10:52,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:10:52,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:10:52,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:10:52,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:10:52,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:10:52,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:10:52,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:10:52,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:10:52,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:10:52,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:10:52,363 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 16:10:52,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:10:52,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:10:52,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:10:52,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:10:52,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:10:52,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:10:52,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:10:52,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:10:52,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:10:52,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:10:52,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:10:52,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:10:52,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:10:52,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:10:52,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:10:52,392 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:10:52,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:10:52,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:10:52,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:10:52,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:10:52,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:10:52,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:10:52,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:10:52,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:10:52,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:10:52,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:10:52,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:10:52,814 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:10:52,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2021-02-23 16:10:52,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d79f83e0/cfd173d45479447d95c9c61d21c9615c/FLAGa7b33ba68 [2021-02-23 16:10:53,514 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:10:53,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2021-02-23 16:10:53,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d79f83e0/cfd173d45479447d95c9c61d21c9615c/FLAGa7b33ba68 [2021-02-23 16:10:53,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d79f83e0/cfd173d45479447d95c9c61d21c9615c [2021-02-23 16:10:53,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:10:53,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:10:53,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:53,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:10:53,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:10:53,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:53" (1/1) ... [2021-02-23 16:10:53,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d260d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:53, skipping insertion in model container [2021-02-23 16:10:53,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:53" (1/1) ... [2021-02-23 16:10:53,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:10:53,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:10:54,145 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_spec1_product55.cil.c[7599,7612] [2021-02-23 16:10:54,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:54,279 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:10:54,319 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_spec1_product55.cil.c[7599,7612] [2021-02-23 16:10:54,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:54,399 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:10:54,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54 WrapperNode [2021-02-23 16:10:54,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:54,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:10:54,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:10:54,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:10:54,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (1/1) ... [2021-02-23 16:10:54,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:10:54,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:10:54,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:10:54,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:10:54,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (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 16:10:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:10:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:10:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:10:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:10:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:10:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:10:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:10:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:10:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:10:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:10:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:10:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:10:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:10:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:10:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:10:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:10:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:10:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:10:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:10:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:10:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:10:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:10:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:10:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:54,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:54,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:54,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:10:54,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:10:54,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:10:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:10:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:10:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:10:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:10:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:10:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:10:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:10:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:10:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:10:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:10:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:10:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:10:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:10:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:10:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:10:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:10:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:10:55,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:10:55,905 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:10:55,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:55 BoogieIcfgContainer [2021-02-23 16:10:55,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:10:55,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:10:55,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:10:55,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:10:55,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:10:53" (1/3) ... [2021-02-23 16:10:55,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5891088a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:55, skipping insertion in model container [2021-02-23 16:10:55,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:54" (2/3) ... [2021-02-23 16:10:55,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5891088a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:55, skipping insertion in model container [2021-02-23 16:10:55,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:55" (3/3) ... [2021-02-23 16:10:55,917 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2021-02-23 16:10:55,924 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:10:55,930 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:10:55,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:10:55,974 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:10:55,975 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:10:55,975 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:10:55,975 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:10:55,975 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:10:55,975 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:10:55,975 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:10:55,976 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:10:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states. [2021-02-23 16:10:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:10:56,019 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:56,020 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 16:10:56,020 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2098560608, now seen corresponding path program 1 times [2021-02-23 16:10:56,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:56,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289156136] [2021-02-23 16:10:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:56,113 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,804 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:56,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:56,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:56,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:10:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:57,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:57,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:57,056 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 16:10:57,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289156136] [2021-02-23 16:10:57,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:57,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:10:57,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808882786] [2021-02-23 16:10:57,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:10:57,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:57,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:10:57,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:57,081 INFO L87 Difference]: Start difference. First operand 344 states. Second operand 3 states. [2021-02-23 16:10:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:58,635 INFO L93 Difference]: Finished difference Result 551 states and 658 transitions. [2021-02-23 16:10:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:10:58,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:10:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:58,654 INFO L225 Difference]: With dead ends: 551 [2021-02-23 16:10:58,654 INFO L226 Difference]: Without dead ends: 337 [2021-02-23 16:10:58,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-02-23 16:10:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 292. [2021-02-23 16:10:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-02-23 16:10:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 321 transitions. [2021-02-23 16:10:58,834 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 321 transitions. Word has length 147 [2021-02-23 16:10:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:58,835 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 321 transitions. [2021-02-23 16:10:58,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:10:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 321 transitions. [2021-02-23 16:10:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:10:58,840 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:58,840 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 16:10:58,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:10:58,841 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1759336169, now seen corresponding path program 1 times [2021-02-23 16:10:58,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:58,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89745833] [2021-02-23 16:10:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:58,846 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:58,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,179 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:10:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:10:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,275 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 16:10:59,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89745833] [2021-02-23 16:10:59,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:59,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:10:59,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828445759] [2021-02-23 16:10:59,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:10:59,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:59,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:10:59,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:10:59,278 INFO L87 Difference]: Start difference. First operand 292 states and 321 transitions. Second operand 4 states. [2021-02-23 16:10:59,892 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:01,056 INFO L93 Difference]: Finished difference Result 461 states and 524 transitions. [2021-02-23 16:11:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:11:01,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:11:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:01,063 INFO L225 Difference]: With dead ends: 461 [2021-02-23 16:11:01,063 INFO L226 Difference]: Without dead ends: 320 [2021-02-23 16:11:01,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:11:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-23 16:11:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 282. [2021-02-23 16:11:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-23 16:11:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 308 transitions. [2021-02-23 16:11:01,180 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 308 transitions. Word has length 148 [2021-02-23 16:11:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:01,180 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 308 transitions. [2021-02-23 16:11:01,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:11:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 308 transitions. [2021-02-23 16:11:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:11:01,183 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:01,183 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 16:11:01,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:11:01,184 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:01,184 INFO L82 PathProgramCache]: Analyzing trace with hash 654950291, now seen corresponding path program 1 times [2021-02-23 16:11:01,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:01,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137237341] [2021-02-23 16:11:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:01,188 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:01,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:01,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:01,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:01,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:01,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:01,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:01,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,587 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:01,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:01,700 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:11:01,702 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:11:01,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:11:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:11:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:01,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:01,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:01,765 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 16:11:01,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137237341] [2021-02-23 16:11:01,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:01,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:11:01,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723901746] [2021-02-23 16:11:01,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:11:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:11:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:11:01,768 INFO L87 Difference]: Start difference. First operand 282 states and 308 transitions. Second operand 9 states. [2021-02-23 16:11:02,240 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:02,560 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:02,819 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:11:03,160 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:03,436 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:03,723 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:04,572 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:07,055 INFO L93 Difference]: Finished difference Result 751 states and 871 transitions. [2021-02-23 16:11:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:11:07,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:11:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:07,068 INFO L225 Difference]: With dead ends: 751 [2021-02-23 16:11:07,068 INFO L226 Difference]: Without dead ends: 584 [2021-02-23 16:11:07,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:11:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-02-23 16:11:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 513. [2021-02-23 16:11:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2021-02-23 16:11:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 579 transitions. [2021-02-23 16:11:07,347 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 579 transitions. Word has length 157 [2021-02-23 16:11:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:07,347 INFO L480 AbstractCegarLoop]: Abstraction has 513 states and 579 transitions. [2021-02-23 16:11:07,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:11:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 579 transitions. [2021-02-23 16:11:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:11:07,351 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:07,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:07,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:11:07,351 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash -54603577, now seen corresponding path program 1 times [2021-02-23 16:11:07,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:07,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421323266] [2021-02-23 16:11:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:07,356 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,668 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:07,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:11:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:11:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:11:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,913 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 16:11:07,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421323266] [2021-02-23 16:11:07,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:07,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:11:07,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115362465] [2021-02-23 16:11:07,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:11:07,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:07,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:11:07,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:11:07,916 INFO L87 Difference]: Start difference. First operand 513 states and 579 transitions. Second operand 9 states. [2021-02-23 16:11:08,432 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:09,475 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:09,788 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:10,225 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:10,591 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:11,185 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:11,563 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:11,899 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:12,457 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:13,704 INFO L93 Difference]: Finished difference Result 1432 states and 1721 transitions. [2021-02-23 16:11:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:11:13,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-23 16:11:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:13,717 INFO L225 Difference]: With dead ends: 1432 [2021-02-23 16:11:13,718 INFO L226 Difference]: Without dead ends: 1034 [2021-02-23 16:11:13,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:11:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-02-23 16:11:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 872. [2021-02-23 16:11:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2021-02-23 16:11:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 999 transitions. [2021-02-23 16:11:14,070 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 999 transitions. Word has length 166 [2021-02-23 16:11:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:14,070 INFO L480 AbstractCegarLoop]: Abstraction has 872 states and 999 transitions. [2021-02-23 16:11:14,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:11:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 999 transitions. [2021-02-23 16:11:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:11:14,075 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:14,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:14,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:11:14,075 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash 625697653, now seen corresponding path program 1 times [2021-02-23 16:11:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:14,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413053931] [2021-02-23 16:11:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:14,080 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,449 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:11:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:11:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:11:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:14,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:14,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:14,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:14,638 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 16:11:14,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413053931] [2021-02-23 16:11:14,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:14,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:11:14,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297301427] [2021-02-23 16:11:14,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:11:14,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:14,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:11:14,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:11:14,641 INFO L87 Difference]: Start difference. First operand 872 states and 999 transitions. Second operand 10 states. [2021-02-23 16:11:15,138 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:16,365 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:16,655 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:16,973 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:17,254 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:11:17,533 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:18,289 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:18,564 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:18,899 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:20,416 INFO L93 Difference]: Finished difference Result 2225 states and 2750 transitions. [2021-02-23 16:11:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:11:20,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-23 16:11:20,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:20,426 INFO L225 Difference]: With dead ends: 2225 [2021-02-23 16:11:20,427 INFO L226 Difference]: Without dead ends: 1468 [2021-02-23 16:11:20,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:11:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-02-23 16:11:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1206. [2021-02-23 16:11:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2021-02-23 16:11:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1398 transitions. [2021-02-23 16:11:21,063 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1398 transitions. Word has length 171 [2021-02-23 16:11:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:21,063 INFO L480 AbstractCegarLoop]: Abstraction has 1206 states and 1398 transitions. [2021-02-23 16:11:21,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:11:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1398 transitions. [2021-02-23 16:11:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:11:21,070 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:21,070 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, 1, 1, 1, 1, 1, 1, 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 16:11:21,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:11:21,071 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:21,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1968694556, now seen corresponding path program 1 times [2021-02-23 16:11:21,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:21,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188698319] [2021-02-23 16:11:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:21,075 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,398 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:11:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:21,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:21,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:21,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:21,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:11:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-23 16:11:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:21,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:21,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:21,660 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 16:11:21,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188698319] [2021-02-23 16:11:21,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:21,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:11:21,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818299109] [2021-02-23 16:11:21,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:11:21,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:11:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:11:21,663 INFO L87 Difference]: Start difference. First operand 1206 states and 1398 transitions. Second operand 10 states. [2021-02-23 16:11:22,981 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:23,275 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:11:23,612 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:11:23,908 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:24,232 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:24,476 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:26,160 INFO L93 Difference]: Finished difference Result 2701 states and 3311 transitions. [2021-02-23 16:11:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:11:26,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-23 16:11:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:26,173 INFO L225 Difference]: With dead ends: 2701 [2021-02-23 16:11:26,173 INFO L226 Difference]: Without dead ends: 1610 [2021-02-23 16:11:26,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:11:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-02-23 16:11:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1244. [2021-02-23 16:11:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2021-02-23 16:11:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1438 transitions. [2021-02-23 16:11:26,678 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1438 transitions. Word has length 205 [2021-02-23 16:11:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:26,679 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 1438 transitions. [2021-02-23 16:11:26,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:11:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1438 transitions. [2021-02-23 16:11:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:11:26,684 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:26,684 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, 1, 1, 1, 1, 1, 1, 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 16:11:26,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:11:26,685 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1912641348, now seen corresponding path program 1 times [2021-02-23 16:11:26,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:26,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908314648] [2021-02-23 16:11:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:26,689 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:26,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:26,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:26,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:26,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:26,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:26,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:26,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:26,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:26,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:26,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,008 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:27,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:27,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:11:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:11:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:27,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:27,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:27,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:11:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-23 16:11:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:27,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:27,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:27,229 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 16:11:27,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908314648] [2021-02-23 16:11:27,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:27,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:11:27,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747644822] [2021-02-23 16:11:27,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:11:27,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:27,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:11:27,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:11:27,232 INFO L87 Difference]: Start difference. First operand 1244 states and 1438 transitions. Second operand 13 states. [2021-02-23 16:11:27,799 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:28,085 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:11:28,361 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:28,638 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:28,919 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:29,823 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:30,107 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:30,423 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:30,727 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:31,020 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:32,980 INFO L93 Difference]: Finished difference Result 2783 states and 3458 transitions. [2021-02-23 16:11:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:11:32,980 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2021-02-23 16:11:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:32,990 INFO L225 Difference]: With dead ends: 2783 [2021-02-23 16:11:32,990 INFO L226 Difference]: Without dead ends: 1654 [2021-02-23 16:11:32,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:11:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-02-23 16:11:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1268. [2021-02-23 16:11:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2021-02-23 16:11:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1462 transitions. [2021-02-23 16:11:33,655 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1462 transitions. Word has length 205 [2021-02-23 16:11:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:33,656 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 1462 transitions. [2021-02-23 16:11:33,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:11:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1462 transitions. [2021-02-23 16:11:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:11:33,661 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:33,661 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, 1, 1, 1, 1, 1, 1, 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 16:11:33,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:11:33,661 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:33,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1982159457, now seen corresponding path program 1 times [2021-02-23 16:11:33,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:33,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654155267] [2021-02-23 16:11:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:33,665 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:33,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:33,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:33,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:33,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:33,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:33,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:33,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:33,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:33,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:33,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:33,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:33,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:33,969 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:11:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:34,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:11:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-23 16:11:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:34,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:34,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:34,163 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 16:11:34,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654155267] [2021-02-23 16:11:34,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:34,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:11:34,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34511442] [2021-02-23 16:11:34,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:11:34,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:34,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:11:34,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:11:34,165 INFO L87 Difference]: Start difference. First operand 1268 states and 1462 transitions. Second operand 7 states. [2021-02-23 16:11:34,649 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:35,253 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:38,832 INFO L93 Difference]: Finished difference Result 4121 states and 5140 transitions. [2021-02-23 16:11:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:11:38,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2021-02-23 16:11:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:38,850 INFO L225 Difference]: With dead ends: 4121 [2021-02-23 16:11:38,850 INFO L226 Difference]: Without dead ends: 2968 [2021-02-23 16:11:38,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:11:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-02-23 16:11:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2464. [2021-02-23 16:11:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2464 states. [2021-02-23 16:11:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 2870 transitions. [2021-02-23 16:11:40,034 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 2870 transitions. Word has length 205 [2021-02-23 16:11:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:40,035 INFO L480 AbstractCegarLoop]: Abstraction has 2464 states and 2870 transitions. [2021-02-23 16:11:40,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:11:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 2870 transitions. [2021-02-23 16:11:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:11:40,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:40,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:11:40,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:11:40,041 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:40,041 INFO L82 PathProgramCache]: Analyzing trace with hash -767151286, now seen corresponding path program 1 times [2021-02-23 16:11:40,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:40,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582386080] [2021-02-23 16:11:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:40,044 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:40,106 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:40,166 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:40,380 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:11:40,380 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:11:40,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:11:40,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:11:40 BoogieIcfgContainer [2021-02-23 16:11:40,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:11:40,406 INFO L168 Benchmark]: Toolchain (without parser) took 46556.19 ms. Allocated memory was 159.4 MB in the beginning and 1.0 GB in the end (delta: 890.2 MB). Free memory was 134.0 MB in the beginning and 552.9 MB in the end (delta: -418.9 MB). Peak memory consumption was 472.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:40,406 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:11:40,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.71 ms. Allocated memory is still 159.4 MB. Free memory was 132.9 MB in the beginning and 111.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:40,406 INFO L168 Benchmark]: Boogie Preprocessor took 141.12 ms. Allocated memory is still 159.4 MB. Free memory was 111.2 MB in the beginning and 140.5 MB in the end (delta: -29.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:40,407 INFO L168 Benchmark]: RCFGBuilder took 1359.13 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 140.5 MB in the beginning and 122.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:40,407 INFO L168 Benchmark]: TraceAbstraction took 44494.99 ms. Allocated memory was 196.1 MB in the beginning and 1.0 GB in the end (delta: 853.5 MB). Free memory was 122.1 MB in the beginning and 552.9 MB in the end (delta: -430.8 MB). Peak memory consumption was 423.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:40,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 535.71 ms. Allocated memory is still 159.4 MB. Free memory was 132.9 MB in the beginning and 111.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.12 ms. Allocated memory is still 159.4 MB. Free memory was 111.2 MB in the beginning and 140.5 MB in the end (delta: -29.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1359.13 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 140.5 MB in the beginning and 122.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 44494.99 ms. Allocated memory was 196.1 MB in the beginning and 1.0 GB in the end (delta: 853.5 MB). Free memory was 122.1 MB in the beginning and 552.9 MB in the end (delta: -430.8 MB). Peak memory consumption was 423.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 508]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L591] FCALL select_helpers() [L592] FCALL select_features() [L593] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] RET, EXPR valid_product() [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L597] FCALL setup() [L598] CALL runTest() [L580] CALL test() [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) [L107] CALL waterRise() [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 [L107] RET waterRise() [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) [L117] CALL changeMethaneLevel() [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 [L117] RET changeMethaneLevel() [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L140] CALL timeShift() [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L178] CALL processEnvironment() [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L268] CALL processEnvironment__wrappee__lowWaterSensor() [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L242] CALL processEnvironment__wrappee__highWaterSensor() [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L203] CALL, EXPR isHighWaterLevel() [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L353] CALL, EXPR isHighWaterSensorDry() [L481] int retValue_acc ; [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); [L353] RET, EXPR isHighWaterSensorDry() [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] RET, EXPR isHighWaterLevel() [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L207] CALL activatePump() [L278] pumpRunning = 1 [L207] RET activatePump() [L242] RET processEnvironment__wrappee__highWaterSensor() [L268] RET processEnvironment__wrappee__lowWaterSensor() [L178] RET processEnvironment() [L184] CALL __utac_acc__Specification1_spec__1() [L610] int tmp ; [L611] int tmp___0 ; [L615] CALL, EXPR isMethaneLevelCritical() [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] RET, EXPR isMethaneLevelCritical() [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L619] CALL, EXPR isPumpRunning() [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); [L619] RET, EXPR isPumpRunning() [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) [L623] CALL __automaton_fail() [L508] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 664 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2224 SDtfs, 3763 SDslu, 4078 SDs, 0 SdLazy, 9240 SolverSat, 1187 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2464occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 1834 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...