/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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:16:12,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:16:12,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:16:12,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:16:12,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:16:12,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:16:12,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:16:12,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:16:12,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:16:12,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:16:12,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:16:12,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:16:12,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:16:12,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:16:12,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:16:12,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:16:12,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:16:12,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:16:12,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:16:12,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:16:12,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:16:12,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:16:12,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:16:12,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:16:12,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:16:12,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:16:12,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:16:12,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:16:12,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:16:12,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:16:12,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:16:12,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:16:12,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:16:12,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:16:12,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:16:12,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:16:12,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:16:12,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:16:12,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:16:12,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:16:12,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:16:12,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:16:12,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:16:12,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:16:12,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:16:12,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:16:12,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:16:12,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:16:12,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:16:12,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:16:12,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:16:12,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:16:12,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:16:12,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:16:12,768 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:16:12,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:16:12,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:16:12,768 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:16:12,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:16:12,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:16:12,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:16:12,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:16:12,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:16:12,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:16:12,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:16:13,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:16:13,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:16:13,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:16:13,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:16:13,289 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:16:13,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product22.cil.c [2021-02-21 19:16:13,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218b50b9b/bc94fb6754c0403487663f1df23781cf/FLAG913ee986c [2021-02-21 19:16:14,212 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:16:14,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product22.cil.c [2021-02-21 19:16:14,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218b50b9b/bc94fb6754c0403487663f1df23781cf/FLAG913ee986c [2021-02-21 19:16:14,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218b50b9b/bc94fb6754c0403487663f1df23781cf [2021-02-21 19:16:14,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:16:14,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:16:14,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:16:14,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:16:14,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:16:14,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:16:14" (1/1) ... [2021-02-21 19:16:14,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415b1f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:14, skipping insertion in model container [2021-02-21 19:16:14,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:16:14" (1/1) ... [2021-02-21 19:16:14,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:16:14,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:16:14,873 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_product22.cil.c[7691,7704] [2021-02-21 19:16:14,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:16:14,964 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:16:15,077 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_product22.cil.c[7691,7704] [2021-02-21 19:16:15,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:16:15,176 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:16:15,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15 WrapperNode [2021-02-21 19:16:15,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:16:15,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:16:15,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:16:15,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:16:15,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (1/1) ... [2021-02-21 19:16:15,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:16:15,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:16:15,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:16:15,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:16:15,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (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 [2021-02-21 19:16:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:16:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:16:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:16:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:16:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:16:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:16:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:16:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:16:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:16:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:16:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:16:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:16:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:16:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:16:15,479 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:16:15,479 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:16:15,479 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:16:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:16:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:16:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:16:15,484 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:16:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:16:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:16:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:16:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:16:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:16:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:16:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:16:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:16:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:16:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:16:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:16:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:16:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:16:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:16:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:16:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:16:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:16:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:16:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:16:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:16:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:16:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:16:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:16:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:16:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:16:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:16:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:16:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:16:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:16:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:16:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:16:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:16:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:16:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:16:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:16:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:16:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:16:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:16:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:16:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:16:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:16:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:16:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:16:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:16:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:16:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:16:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:16:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:16:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:16:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:16:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:16:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:16:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:16:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:16:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:16:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:16:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:16:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:16:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:16:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:16:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:16:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:16:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:16:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:16:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:16:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:16:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:16:17,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:16:17,228 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:16:17,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:16:17 BoogieIcfgContainer [2021-02-21 19:16:17,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:16:17,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:16:17,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:16:17,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:16:17,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:16:14" (1/3) ... [2021-02-21 19:16:17,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab5b0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:16:17, skipping insertion in model container [2021-02-21 19:16:17,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:15" (2/3) ... [2021-02-21 19:16:17,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab5b0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:16:17, skipping insertion in model container [2021-02-21 19:16:17,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:16:17" (3/3) ... [2021-02-21 19:16:17,248 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product22.cil.c [2021-02-21 19:16:17,257 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:16:17,265 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:16:17,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:16:17,328 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:16:17,328 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:16:17,328 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:16:17,329 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:16:17,329 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:16:17,330 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:16:17,330 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:16:17,330 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:16:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2021-02-21 19:16:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:16:17,392 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:17,393 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] [2021-02-21 19:16:17,394 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:17,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1668121658, now seen corresponding path program 1 times [2021-02-21 19:16:17,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:17,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314094232] [2021-02-21 19:16:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:17,505 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:17,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:17,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:17,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:17,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,434 WARN L202 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:18,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:16:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:16:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:18,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:18,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:18,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314094232] [2021-02-21 19:16:18,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:18,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:16:18,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632727457] [2021-02-21 19:16:18,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:16:18,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:18,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:16:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:16:18,636 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2021-02-21 19:16:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:20,524 INFO L93 Difference]: Finished difference Result 480 states and 570 transitions. [2021-02-21 19:16:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:16:20,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:16:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:20,545 INFO L225 Difference]: With dead ends: 480 [2021-02-21 19:16:20,545 INFO L226 Difference]: Without dead ends: 300 [2021-02-21 19:16:20,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:16:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-21 19:16:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 258. [2021-02-21 19:16:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-02-21 19:16:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 279 transitions. [2021-02-21 19:16:20,740 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 279 transitions. Word has length 147 [2021-02-21 19:16:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:20,741 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 279 transitions. [2021-02-21 19:16:20,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:16:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 279 transitions. [2021-02-21 19:16:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:16:20,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:20,747 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] [2021-02-21 19:16:20,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:16:20,747 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:20,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:20,748 INFO L82 PathProgramCache]: Analyzing trace with hash 224031028, now seen corresponding path program 1 times [2021-02-21 19:16:20,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:20,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351375286] [2021-02-21 19:16:20,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:20,753 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:20,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:20,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:20,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:20,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:20,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:20,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,293 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:16:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:16:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:21,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:21,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:21,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351375286] [2021-02-21 19:16:21,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:21,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:16:21,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460243684] [2021-02-21 19:16:21,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:16:21,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:21,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:16:21,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:16:21,404 INFO L87 Difference]: Start difference. First operand 258 states and 279 transitions. Second operand 4 states. [2021-02-21 19:16:22,175 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:23,317 INFO L93 Difference]: Finished difference Result 392 states and 440 transitions. [2021-02-21 19:16:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:16:23,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:16:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:23,323 INFO L225 Difference]: With dead ends: 392 [2021-02-21 19:16:23,323 INFO L226 Difference]: Without dead ends: 283 [2021-02-21 19:16:23,326 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 [2021-02-21 19:16:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-02-21 19:16:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 248. [2021-02-21 19:16:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 19:16:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions. [2021-02-21 19:16:23,471 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 148 [2021-02-21 19:16:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:23,472 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions. [2021-02-21 19:16:23,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:16:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions. [2021-02-21 19:16:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:16:23,476 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:23,476 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] [2021-02-21 19:16:23,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:16:23,477 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash -641898062, now seen corresponding path program 1 times [2021-02-21 19:16:23,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:23,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519189905] [2021-02-21 19:16:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:23,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:23,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:23,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:23,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:23,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:23,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:23,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:23,937 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:23,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:23,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:23,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:23,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:23,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:23,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:24,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:24,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:24,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:24,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:24,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:24,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:16:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:24,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:24,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:16:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:24,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:24,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:16:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:24,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:24,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:24,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519189905] [2021-02-21 19:16:24,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:24,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:16:24,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629455052] [2021-02-21 19:16:24,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:16:24,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:24,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:16:24,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:16:24,149 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand 10 states. [2021-02-21 19:16:24,912 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:25,391 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:25,802 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:16:26,179 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:26,534 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:26,920 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:28,868 INFO L93 Difference]: Finished difference Result 438 states and 502 transitions. [2021-02-21 19:16:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:16:28,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:16:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:28,874 INFO L225 Difference]: With dead ends: 438 [2021-02-21 19:16:28,874 INFO L226 Difference]: Without dead ends: 305 [2021-02-21 19:16:28,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:16:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-21 19:16:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 248. [2021-02-21 19:16:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 19:16:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 265 transitions. [2021-02-21 19:16:28,973 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 265 transitions. Word has length 161 [2021-02-21 19:16:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:28,974 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 265 transitions. [2021-02-21 19:16:28,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:16:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 265 transitions. [2021-02-21 19:16:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-21 19:16:28,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:28,977 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] [2021-02-21 19:16:28,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:16:28,977 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1419942, now seen corresponding path program 1 times [2021-02-21 19:16:28,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:28,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371681872] [2021-02-21 19:16:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:28,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:29,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:29,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:29,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:29,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:29,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:29,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:29,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:29,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:29,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:29,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,464 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:16:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:29,594 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:16:29,595 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:16:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:16:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:16:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:16:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:16:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:16:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:29,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 19:16:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:29,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:29,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:29,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371681872] [2021-02-21 19:16:29,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:29,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:16:29,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974479113] [2021-02-21 19:16:29,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:16:29,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:29,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:16:29,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:16:29,778 INFO L87 Difference]: Start difference. First operand 248 states and 265 transitions. Second operand 15 states. [2021-02-21 19:16:30,511 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:31,064 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:31,452 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:16:31,848 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:32,294 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:32,676 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:33,531 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:35,357 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:35,780 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:36,360 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:36,786 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:37,151 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:37,534 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:16:37,941 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:16:38,330 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:38,702 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:39,201 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:39,744 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:16:40,162 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:40,712 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:43,104 INFO L93 Difference]: Finished difference Result 868 states and 1087 transitions. [2021-02-21 19:16:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:16:43,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2021-02-21 19:16:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:43,116 INFO L225 Difference]: With dead ends: 868 [2021-02-21 19:16:43,117 INFO L226 Difference]: Without dead ends: 735 [2021-02-21 19:16:43,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:16:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-02-21 19:16:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 492. [2021-02-21 19:16:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2021-02-21 19:16:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 546 transitions. [2021-02-21 19:16:43,362 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 546 transitions. Word has length 174 [2021-02-21 19:16:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:43,363 INFO L480 AbstractCegarLoop]: Abstraction has 492 states and 546 transitions. [2021-02-21 19:16:43,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:16:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 546 transitions. [2021-02-21 19:16:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-21 19:16:43,367 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:43,368 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] [2021-02-21 19:16:43,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:16:43,368 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:43,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:43,369 INFO L82 PathProgramCache]: Analyzing trace with hash 453859825, now seen corresponding path program 1 times [2021-02-21 19:16:43,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:43,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88246510] [2021-02-21 19:16:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:43,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:43,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:43,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:43,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:43,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:43,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,775 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:43,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:16:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:16:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 19:16:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:16:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:16:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:16:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-21 19:16:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:43,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:43,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:43,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88246510] [2021-02-21 19:16:43,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:43,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:16:43,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707443805] [2021-02-21 19:16:43,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:16:43,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:43,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:16:43,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:16:43,947 INFO L87 Difference]: Start difference. First operand 492 states and 546 transitions. Second operand 7 states. [2021-02-21 19:16:44,686 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:45,791 INFO L93 Difference]: Finished difference Result 787 states and 921 transitions. [2021-02-21 19:16:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:16:45,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-21 19:16:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:45,795 INFO L225 Difference]: With dead ends: 787 [2021-02-21 19:16:45,795 INFO L226 Difference]: Without dead ends: 410 [2021-02-21 19:16:45,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:16:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-02-21 19:16:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 323. [2021-02-21 19:16:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-02-21 19:16:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 340 transitions. [2021-02-21 19:16:45,932 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 340 transitions. Word has length 179 [2021-02-21 19:16:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:45,933 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 340 transitions. [2021-02-21 19:16:45,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:16:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 340 transitions. [2021-02-21 19:16:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-02-21 19:16:45,937 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:45,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:16:45,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:16:45,938 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash 252462724, now seen corresponding path program 1 times [2021-02-21 19:16:45,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:45,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683792277] [2021-02-21 19:16:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:46,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:46,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:46,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1