/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:56:09,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:56:09,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:56:09,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:56:09,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:56:09,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:56:09,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:56:09,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:56:09,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:56:09,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:56:09,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:56:09,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:56:09,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:56:09,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:56:09,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:56:09,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:56:09,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:56:09,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:56:09,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:56:09,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:56:09,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:56:09,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:56:09,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:56:09,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:56:09,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:56:09,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:56:09,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:56:09,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:56:09,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:56:09,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:56:09,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:56:09,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:56:09,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:56:09,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:56:09,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:56:09,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:56:09,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:56:09,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:56:09,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:56:09,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:56:09,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:56:09,762 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 16:56:09,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:56:09,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:56:09,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:56:09,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:56:09,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:56:09,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:56:09,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:56:09,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:56:09,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:56:09,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:56:09,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:56:09,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:56:09,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:56:09,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:56:09,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:56:09,781 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:56:09,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:56:09,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:56:09,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:56:09,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:56:09,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:56:09,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:56:09,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:56:10,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:56:10,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:56:10,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:56:10,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:56:10,253 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:56:10,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2021-02-23 16:56:10,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f49c5c66/d2d5356b32aa4563b669fd101f9a4faa/FLAGa259dedf3 [2021-02-23 16:56:11,126 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:56:11,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2021-02-23 16:56:11,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f49c5c66/d2d5356b32aa4563b669fd101f9a4faa/FLAGa259dedf3 [2021-02-23 16:56:11,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f49c5c66/d2d5356b32aa4563b669fd101f9a4faa [2021-02-23 16:56:11,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:56:11,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:56:11,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:56:11,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:56:11,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:56:11,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:56:11" (1/1) ... [2021-02-23 16:56:11,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7b9c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:11, skipping insertion in model container [2021-02-23 16:56:11,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:56:11" (1/1) ... [2021-02-23 16:56:11,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:56:11,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:56:11,806 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c[7702,7715] [2021-02-23 16:56:11,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:56:11,938 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:56:11,988 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c[7702,7715] [2021-02-23 16:56:12,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:56:12,118 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:56:12,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12 WrapperNode [2021-02-23 16:56:12,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:56:12,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:56:12,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:56:12,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:56:12,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (1/1) ... [2021-02-23 16:56:12,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:56:12,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:56:12,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:56:12,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:56:12,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (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 16:56:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:56:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:56:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:56:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:56:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:56:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:56:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:56:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:56:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:56:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:56:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:56:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:56:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:56:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:56:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:56:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:56:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:56:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:56:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:56:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:56:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:56:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:56:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:56:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:56:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:56:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:56:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:56:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:56:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:56:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:56:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:56:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:56:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:56:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:56:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:56:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:56:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:56:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:56:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:56:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:56:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:56:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:56:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:56:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:56:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:56:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:56:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:56:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:56:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:56:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:56:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:56:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:56:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:56:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:56:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:56:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:56:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:56:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:56:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:56:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:56:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:56:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:56:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:56:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:56:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:56:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:56:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:56:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:56:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:56:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:56:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:56:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:56:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:56:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:56:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:56:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:56:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:56:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:56:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:56:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:56:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:56:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:56:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:56:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:56:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:56:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:56:14,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:56:14,255 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:56:14,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:56:14 BoogieIcfgContainer [2021-02-23 16:56:14,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:56:14,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:56:14,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:56:14,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:56:14,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:56:11" (1/3) ... [2021-02-23 16:56:14,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc6b0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:56:14, skipping insertion in model container [2021-02-23 16:56:14,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:56:12" (2/3) ... [2021-02-23 16:56:14,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc6b0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:56:14, skipping insertion in model container [2021-02-23 16:56:14,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:56:14" (3/3) ... [2021-02-23 16:56:14,269 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2021-02-23 16:56:14,277 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:56:14,283 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:56:14,324 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:56:14,350 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:56:14,350 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:56:14,350 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:56:14,350 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:56:14,351 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:56:14,351 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:56:14,351 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:56:14,351 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:56:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states. [2021-02-23 16:56:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:56:14,398 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:14,399 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 16:56:14,400 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:14,407 INFO L82 PathProgramCache]: Analyzing trace with hash -232000956, now seen corresponding path program 1 times [2021-02-23 16:56:14,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:14,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178019403] [2021-02-23 16:56:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:14,507 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:14,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:14,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:14,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:14,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,602 WARN L202 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:15,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:56:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:56:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:15,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:15,836 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 16:56:15,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178019403] [2021-02-23 16:56:15,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:15,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:56:15,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21478603] [2021-02-23 16:56:15,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:56:15,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:15,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:56:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:56:15,871 INFO L87 Difference]: Start difference. First operand 288 states. Second operand 3 states. [2021-02-23 16:56:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:17,715 INFO L93 Difference]: Finished difference Result 434 states and 517 transitions. [2021-02-23 16:56:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:56:17,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:56:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:17,737 INFO L225 Difference]: With dead ends: 434 [2021-02-23 16:56:17,737 INFO L226 Difference]: Without dead ends: 276 [2021-02-23 16:56:17,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:56:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-23 16:56:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 236. [2021-02-23 16:56:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-23 16:56:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 254 transitions. [2021-02-23 16:56:17,919 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 254 transitions. Word has length 147 [2021-02-23 16:56:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:17,920 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 254 transitions. [2021-02-23 16:56:17,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:56:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 254 transitions. [2021-02-23 16:56:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:56:17,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:17,926 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 16:56:17,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:56:17,927 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:17,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:17,928 INFO L82 PathProgramCache]: Analyzing trace with hash -316381830, now seen corresponding path program 1 times [2021-02-23 16:56:17,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:17,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550433973] [2021-02-23 16:56:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:17,933 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:18,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,496 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:18,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:56:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:56:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:18,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:18,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:18,650 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 16:56:18,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550433973] [2021-02-23 16:56:18,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:18,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:56:18,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633444627] [2021-02-23 16:56:18,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:56:18,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:18,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:56:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:56:18,655 INFO L87 Difference]: Start difference. First operand 236 states and 254 transitions. Second operand 4 states. [2021-02-23 16:56:19,479 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:20,427 INFO L93 Difference]: Finished difference Result 346 states and 387 transitions. [2021-02-23 16:56:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:56:20,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:56:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:20,434 INFO L225 Difference]: With dead ends: 346 [2021-02-23 16:56:20,434 INFO L226 Difference]: Without dead ends: 259 [2021-02-23 16:56:20,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:56:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-23 16:56:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 226. [2021-02-23 16:56:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-23 16:56:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 241 transitions. [2021-02-23 16:56:20,559 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 241 transitions. Word has length 148 [2021-02-23 16:56:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:20,560 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 241 transitions. [2021-02-23 16:56:20,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:56:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 241 transitions. [2021-02-23 16:56:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:56:20,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:20,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:56:20,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:56:20,564 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1062054553, now seen corresponding path program 1 times [2021-02-23 16:56:20,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:20,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669170661] [2021-02-23 16:56:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:20,570 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:20,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:20,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:20,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:20,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:20,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,031 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:21,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:56:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:56:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:56:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:21,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:21,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:21,249 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 16:56:21,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669170661] [2021-02-23 16:56:21,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:21,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:56:21,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067349704] [2021-02-23 16:56:21,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:56:21,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:21,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:56:21,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:56:21,252 INFO L87 Difference]: Start difference. First operand 226 states and 241 transitions. Second operand 10 states. [2021-02-23 16:56:22,025 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:22,514 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:22,928 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:56:23,341 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:23,726 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:24,133 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:25,750 INFO L93 Difference]: Finished difference Result 392 states and 449 transitions. [2021-02-23 16:56:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:56:25,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:56:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:25,755 INFO L225 Difference]: With dead ends: 392 [2021-02-23 16:56:25,755 INFO L226 Difference]: Without dead ends: 281 [2021-02-23 16:56:25,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:56:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-23 16:56:25,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 226. [2021-02-23 16:56:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-23 16:56:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 240 transitions. [2021-02-23 16:56:25,861 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 240 transitions. Word has length 161 [2021-02-23 16:56:25,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:25,861 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 240 transitions. [2021-02-23 16:56:25,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:56:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 240 transitions. [2021-02-23 16:56:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:56:25,865 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:25,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:56:25,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:56:25,866 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash 541101462, now seen corresponding path program 1 times [2021-02-23 16:56:25,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:25,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120226585] [2021-02-23 16:56:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:25,870 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:25,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:25,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:25,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:25,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:25,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:25,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:25,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:25,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:25,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:25,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:25,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:25,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,295 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:56:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:56:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:26,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:56:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:56:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:26,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:26,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:26,488 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 16:56:26,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120226585] [2021-02-23 16:56:26,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:26,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:56:26,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042463352] [2021-02-23 16:56:26,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:56:26,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:26,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:56:26,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:56:26,491 INFO L87 Difference]: Start difference. First operand 226 states and 240 transitions. Second operand 7 states. [2021-02-23 16:56:27,217 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:29,127 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:29,949 INFO L93 Difference]: Finished difference Result 563 states and 666 transitions. [2021-02-23 16:56:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 16:56:29,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2021-02-23 16:56:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:29,955 INFO L225 Difference]: With dead ends: 563 [2021-02-23 16:56:29,955 INFO L226 Difference]: Without dead ends: 452 [2021-02-23 16:56:29,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:56:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-02-23 16:56:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 325. [2021-02-23 16:56:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-23 16:56:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 349 transitions. [2021-02-23 16:56:30,112 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 349 transitions. Word has length 169 [2021-02-23 16:56:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:30,112 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 349 transitions. [2021-02-23 16:56:30,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:56:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 349 transitions. [2021-02-23 16:56:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-23 16:56:30,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:30,116 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] [2021-02-23 16:56:30,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:56:30,117 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:30,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1453830197, now seen corresponding path program 1 times [2021-02-23 16:56:30,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:30,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023808227] [2021-02-23 16:56:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:30,121 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:30,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:30,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,540 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:30,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:56:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:56:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:30,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:30,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:56:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:30,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:56:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 16:56:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-23 16:56:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:30,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:30,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:30,817 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 16:56:30,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023808227] [2021-02-23 16:56:30,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:30,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:56:30,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135278806] [2021-02-23 16:56:30,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:56:30,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:30,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:56:30,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:56:30,821 INFO L87 Difference]: Start difference. First operand 325 states and 349 transitions. Second operand 13 states. [2021-02-23 16:56:31,564 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:31,967 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:32,343 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:32,726 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:33,102 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:34,157 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:34,567 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:34,987 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:35,416 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:35,801 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:37,282 INFO L93 Difference]: Finished difference Result 667 states and 787 transitions. [2021-02-23 16:56:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:56:37,283 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2021-02-23 16:56:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:37,291 INFO L225 Difference]: With dead ends: 667 [2021-02-23 16:56:37,291 INFO L226 Difference]: Without dead ends: 457 [2021-02-23 16:56:37,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:56:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-02-23 16:56:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 331. [2021-02-23 16:56:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2021-02-23 16:56:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 355 transitions. [2021-02-23 16:56:37,477 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 355 transitions. Word has length 193 [2021-02-23 16:56:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:37,478 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 355 transitions. [2021-02-23 16:56:37,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:56:37,478 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 355 transitions. [2021-02-23 16:56:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-23 16:56:37,481 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:37,481 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] [2021-02-23 16:56:37,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:56:37,482 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1224447851, now seen corresponding path program 1 times [2021-02-23 16:56:37,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:37,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807321802] [2021-02-23 16:56:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:37,488 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:37,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:37,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:37,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:37,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:37,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:37,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:37,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:37,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:37,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:37,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:37,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:37,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:37,999 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:56:38,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:38,138 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:56:38,140 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:56:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:56:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:56:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:56:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:56:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 16:56:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:38,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-23 16:56:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:38,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:38,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:38,366 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 16:56:38,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807321802] [2021-02-23 16:56:38,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:38,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:56:38,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860155745] [2021-02-23 16:56:38,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:56:38,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:38,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:56:38,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:56:38,369 INFO L87 Difference]: Start difference. First operand 331 states and 355 transitions. Second operand 15 states. [2021-02-23 16:56:39,093 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:39,614 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:40,024 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:40,470 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:40,885 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:41,291 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:42,091 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:43,564 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:43,943 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:44,340 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:44,715 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:45,084 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:45,467 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:45,838 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:46,241 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:46,685 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:47,106 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:48,919 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:49,304 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:49,793 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:51,322 INFO L93 Difference]: Finished difference Result 1165 states and 1470 transitions. [2021-02-23 16:56:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 16:56:51,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 193 [2021-02-23 16:56:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:51,334 INFO L225 Difference]: With dead ends: 1165 [2021-02-23 16:56:51,335 INFO L226 Difference]: Without dead ends: 949 [2021-02-23 16:56:51,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 16:56:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-02-23 16:56:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 650. [2021-02-23 16:56:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2021-02-23 16:56:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 718 transitions. [2021-02-23 16:56:51,755 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 718 transitions. Word has length 193 [2021-02-23 16:56:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:51,756 INFO L480 AbstractCegarLoop]: Abstraction has 650 states and 718 transitions. [2021-02-23 16:56:51,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:56:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 718 transitions. [2021-02-23 16:56:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-02-23 16:56:51,765 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:51,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:51,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:56:51,767 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:51,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:51,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1362890571, now seen corresponding path program 1 times [2021-02-23 16:56:51,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:51,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063889156] [2021-02-23 16:56:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:51,857 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 16:56:51,860 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:51,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:51,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:51,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:51,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,310 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:56:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:56:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:56:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:52,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:52,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:52,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:52,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:52,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:56:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:56:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-23 16:56:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-23 16:56:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-23 16:56:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-02-23 16:56:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-02-23 16:56:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-02-23 16:56:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-02-23 16:56:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:52,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:52,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:52,615 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 16:56:52,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063889156] [2021-02-23 16:56:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 16:56:52,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477093460] [2021-02-23 16:56:52,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 16:56:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 16:56:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-23 16:56:52,618 INFO L87 Difference]: Start difference. First operand 650 states and 718 transitions. Second operand 12 states. [2021-02-23 16:56:54,426 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:54,823 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:55,242 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:56:55,669 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:56,071 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:56,453 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:58,036 INFO L93 Difference]: Finished difference Result 1316 states and 1562 transitions. [2021-02-23 16:56:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:56:58,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2021-02-23 16:56:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:58,045 INFO L225 Difference]: With dead ends: 1316 [2021-02-23 16:56:58,045 INFO L226 Difference]: Without dead ends: 781 [2021-02-23 16:56:58,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:56:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-02-23 16:56:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 565. [2021-02-23 16:56:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2021-02-23 16:56:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 619 transitions. [2021-02-23 16:56:58,454 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 619 transitions. Word has length 254 [2021-02-23 16:56:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:58,455 INFO L480 AbstractCegarLoop]: Abstraction has 565 states and 619 transitions. [2021-02-23 16:56:58,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 16:56:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 619 transitions. [2021-02-23 16:56:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-02-23 16:56:58,463 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:58,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:58,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:56:58,465 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1126502542, now seen corresponding path program 1 times [2021-02-23 16:56:58,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:58,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845368016] [2021-02-23 16:56:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:58,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:58,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:58,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:58,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:58,873 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2021-02-23 16:56:58,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-02-23 16:56:58,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:58,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:58,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:58,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:59,126 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2021-02-23 16:56:59,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-02-23 16:56:59,353 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-02-23 16:56:59,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-02-23 16:56:59,593 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-02-23 16:56:59,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-02-23 16:56:59,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:59,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:59,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:59,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:59,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:59,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:59,676 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 16:56:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:56:59,804 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:56:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:56:59,924 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:57:00,168 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:57:00,168 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:57:00,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:57:00,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:57:00 BoogieIcfgContainer [2021-02-23 16:57:00,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:57:00,205 INFO L168 Benchmark]: Toolchain (without parser) took 48886.07 ms. Allocated memory was 153.1 MB in the beginning and 587.2 MB in the end (delta: 434.1 MB). Free memory was 134.9 MB in the beginning and 263.0 MB in the end (delta: -128.2 MB). Peak memory consumption was 305.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:57:00,205 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 153.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:57:00,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.54 ms. Allocated memory is still 153.1 MB. Free memory was 133.7 MB in the beginning and 113.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:57:00,206 INFO L168 Benchmark]: Boogie Preprocessor took 226.46 ms. Allocated memory is still 153.1 MB. Free memory was 113.5 MB in the beginning and 133.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:57:00,206 INFO L168 Benchmark]: RCFGBuilder took 1910.19 ms. Allocated memory is still 153.1 MB. Free memory was 133.0 MB in the beginning and 74.4 MB in the end (delta: 58.7 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:57:00,206 INFO L168 Benchmark]: TraceAbstraction took 45942.71 ms. Allocated memory was 153.1 MB in the beginning and 587.2 MB in the end (delta: 434.1 MB). Free memory was 73.8 MB in the beginning and 263.0 MB in the end (delta: -189.2 MB). Peak memory consumption was 244.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:57:00,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 153.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 780.54 ms. Allocated memory is still 153.1 MB. Free memory was 133.7 MB in the beginning and 113.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 226.46 ms. Allocated memory is still 153.1 MB. Free memory was 113.5 MB in the beginning and 133.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1910.19 ms. Allocated memory is still 153.1 MB. Free memory was 133.0 MB in the beginning and 74.4 MB in the end (delta: 58.7 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45942.71 ms. Allocated memory was 153.1 MB in the beginning and 587.2 MB in the end (delta: 434.1 MB). Free memory was 73.8 MB in the beginning and 263.0 MB in the end (delta: -189.2 MB). Peak memory consumption was 244.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 542]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L284] int pumpRunning = 0; [L285] int systemActive = 1; [L444] int waterLevel = 1; [L445] int methaneLevelCritical = 0; [L716] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L152] int retValue_acc ; [L153] int tmp ; [L157] FCALL select_helpers() [L158] FCALL select_features() [L159] CALL, EXPR valid_product() [L201] int retValue_acc ; [L204] retValue_acc = 1 [L205] return (retValue_acc); [L159] RET, EXPR valid_product() [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) [L163] FCALL setup() [L164] CALL runTest() [L143] CALL test() [L212] int splverifierCounter ; [L213] int tmp ; [L214] int tmp___0 ; [L215] int tmp___1 ; [L216] int tmp___2 ; [L219] splverifierCounter = 0 [L221] COND TRUE 1 [L223] COND TRUE splverifierCounter < 4 [L229] tmp = __VERIFIER_nondet_int() [L231] COND TRUE \read(tmp) [L233] CALL waterRise() [L462] COND TRUE waterLevel < 2 [L463] waterLevel = waterLevel + 1 [L233] RET waterRise() [L239] tmp___0 = __VERIFIER_nondet_int() [L241] COND FALSE !(\read(tmp___0)) [L249] tmp___2 = __VERIFIER_nondet_int() [L251] COND TRUE \read(tmp___2) [L253] CALL startSystem() [L439] systemActive = 1 [L253] RET startSystem() [L266] CALL timeShift() [L291] COND FALSE !(\read(pumpRunning)) [L298] COND TRUE \read(systemActive) [L300] CALL processEnvironment() [L320] int tmp ; [L323] COND TRUE ! pumpRunning [L325] CALL, EXPR isHighWaterLevel() [L417] int retValue_acc ; [L418] int tmp ; [L419] int tmp___0 ; [L423] CALL, EXPR isHighWaterSensorDry() [L524] int retValue_acc ; [L527] COND FALSE !(waterLevel < 2) [L531] retValue_acc = 0 [L532] return (retValue_acc); [L423] RET, EXPR isHighWaterSensorDry() [L423] tmp = isHighWaterSensorDry() [L425] COND FALSE !(\read(tmp)) [L428] tmp___0 = 1 [L430] retValue_acc = tmp___0 [L431] return (retValue_acc); [L325] RET, EXPR isHighWaterLevel() [L325] tmp = isHighWaterLevel() [L327] COND TRUE \read(tmp) [L329] CALL activatePump() [L348] pumpRunning = 1 [L329] RET activatePump() [L300] RET processEnvironment() [L306] CALL __utac_acc__Specification4_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); [L51] RET, EXPR getWaterLevel() [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) [L306] RET __utac_acc__Specification4_spec__1() [L266] RET timeShift() [L221] COND TRUE 1 [L223] COND TRUE splverifierCounter < 4 [L229] tmp = __VERIFIER_nondet_int() [L231] COND FALSE !(\read(tmp)) [L239] tmp___0 = __VERIFIER_nondet_int() [L241] COND FALSE !(\read(tmp___0)) [L249] tmp___2 = __VERIFIER_nondet_int() [L251] COND TRUE \read(tmp___2) [L253] CALL startSystem() [L439] systemActive = 1 [L253] RET startSystem() [L266] CALL timeShift() [L291] COND TRUE \read(pumpRunning) [L293] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 [L293] RET lowerWaterLevel() [L298] COND TRUE \read(systemActive) [L300] CALL processEnvironment() [L320] int tmp ; [L323] COND FALSE !(! pumpRunning) [L338] FCALL processEnvironment__wrappee__base() [L300] RET processEnvironment() [L306] CALL __utac_acc__Specification4_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); [L51] RET, EXPR getWaterLevel() [L51] tmp = getWaterLevel() [L53] COND TRUE tmp == 0 [L55] CALL, EXPR isPumpRunning() [L372] int retValue_acc ; [L375] retValue_acc = pumpRunning [L376] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L542] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 36.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1519 SDtfs, 3126 SDslu, 3863 SDs, 0 SdLazy, 6757 SolverSat, 878 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=650occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 896 StatesRemovedByMinimization, 7 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...