/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_spec3_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:57:58,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:57:58,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:57:58,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:57:58,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:57:58,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:57:58,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:57:58,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:57:58,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:57:58,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:57:58,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:57:58,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:57:58,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:57:58,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:57:58,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:57:58,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:57:58,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:57:58,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:57:58,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:57:58,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:57:58,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:57:58,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:57:58,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:57:58,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:57:58,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:57:58,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:57:58,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:57:58,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:57:58,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:57:58,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:57:58,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:57:58,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:57:58,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:57:58,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:57:58,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:57:58,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:57:58,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:57:58,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:57:58,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:57:58,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:57:58,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:57:58,190 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 18:57:58,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:57:58,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:57:58,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:57:58,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:57:58,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:57:58,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:57:58,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:57:58,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:57:58,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:57:58,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:57:58,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:57:58,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:57:58,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:57:58,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:57:58,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:57:58,227 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:57:58,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:57:58,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:57:58,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:57:58,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:57:58,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:57:58,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:57:58,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:57:58,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:57:58,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:57:58,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:57:58,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:57:58,623 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:57:58,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2021-02-21 18:57:58,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a7ceb61/1193bb3a7be44825a842cea95dfb6ff7/FLAG968319013 [2021-02-21 18:57:59,435 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:57:59,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2021-02-21 18:57:59,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a7ceb61/1193bb3a7be44825a842cea95dfb6ff7/FLAG968319013 [2021-02-21 18:57:59,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a7ceb61/1193bb3a7be44825a842cea95dfb6ff7 [2021-02-21 18:57:59,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:57:59,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:57:59,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:59,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:57:59,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:57:59,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:59" (1/1) ... [2021-02-21 18:57:59,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc9bc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:59, skipping insertion in model container [2021-02-21 18:57:59,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:59" (1/1) ... [2021-02-21 18:57:59,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:57:59,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:58:00,051 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_spec3_product27.cil.c[5284,5297] [2021-02-21 18:58:00,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:58:00,208 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:58:00,241 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_spec3_product27.cil.c[5284,5297] [2021-02-21 18:58:00,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:58:00,338 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:58:00,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00 WrapperNode [2021-02-21 18:58:00,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:58:00,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:58:00,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:58:00,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:58:00,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (1/1) ... [2021-02-21 18:58:00,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:58:00,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:58:00,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:58:00,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:58:00,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (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 18:58:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:58:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:58:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:58:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:58:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:58:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:58:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:58:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:58:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 18:58:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:58:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:58:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:58:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:58:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:58:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:58:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:58:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:58:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:58:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:58:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:58:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:58:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:58:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:58:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:58:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:58:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:58:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:58:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:58:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:58:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:58:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:58:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:58:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:58:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:58:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:58:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:58:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:58:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:58:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:58:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:58:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:58:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:58:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:58:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:58:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:58:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:58:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:58:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:58:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:58:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:58:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:58:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:58:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:58:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:58:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:58:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:58:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:58:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:58:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:58:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:58:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:58:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:58:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:58:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:58:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:58:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:58:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:58:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:58:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:58:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:58:02,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:58:02,217 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:58:02,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:58:02 BoogieIcfgContainer [2021-02-21 18:58:02,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:58:02,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:58:02,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:58:02,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:58:02,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:57:59" (1/3) ... [2021-02-21 18:58:02,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7512d369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:58:02, skipping insertion in model container [2021-02-21 18:58:02,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:00" (2/3) ... [2021-02-21 18:58:02,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7512d369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:58:02, skipping insertion in model container [2021-02-21 18:58:02,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:58:02" (3/3) ... [2021-02-21 18:58:02,229 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2021-02-21 18:58:02,236 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:58:02,241 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:58:02,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:58:02,284 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:58:02,285 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:58:02,285 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:58:02,285 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:58:02,285 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:58:02,285 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:58:02,285 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:58:02,286 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:58:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2021-02-21 18:58:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:58:02,330 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:02,331 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] [2021-02-21 18:58:02,331 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:02,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1064075959, now seen corresponding path program 1 times [2021-02-21 18:58:02,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:02,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728193528] [2021-02-21 18:58:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:02,428 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:02,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:02,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,347 WARN L202 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:03,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:58:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:58:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:58:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,616 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 18:58:03,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728193528] [2021-02-21 18:58:03,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:03,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:58:03,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714209155] [2021-02-21 18:58:03,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:58:03,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:58:03,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:58:03,648 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 3 states. [2021-02-21 18:58:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:05,231 INFO L93 Difference]: Finished difference Result 455 states and 542 transitions. [2021-02-21 18:58:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:58:05,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:58:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:05,249 INFO L225 Difference]: With dead ends: 455 [2021-02-21 18:58:05,250 INFO L226 Difference]: Without dead ends: 287 [2021-02-21 18:58:05,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 18:58:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-21 18:58:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 246. [2021-02-21 18:58:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-02-21 18:58:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 266 transitions. [2021-02-21 18:58:05,442 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 266 transitions. Word has length 158 [2021-02-21 18:58:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:05,443 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 266 transitions. [2021-02-21 18:58:05,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:58:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 266 transitions. [2021-02-21 18:58:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:58:05,448 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:05,449 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] [2021-02-21 18:58:05,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:58:05,449 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:05,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1275124268, now seen corresponding path program 1 times [2021-02-21 18:58:05,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:05,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498556599] [2021-02-21 18:58:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:05,455 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:05,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:05,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:05,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:05,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:05,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:05,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:05,969 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:58:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:58:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:58:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:06,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:06,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:06,111 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 18:58:06,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498556599] [2021-02-21 18:58:06,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:06,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:58:06,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15542457] [2021-02-21 18:58:06,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:58:06,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:06,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:58:06,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:58:06,115 INFO L87 Difference]: Start difference. First operand 246 states and 266 transitions. Second operand 4 states. [2021-02-21 18:58:06,847 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:58:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:07,802 INFO L93 Difference]: Finished difference Result 365 states and 408 transitions. [2021-02-21 18:58:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:58:07,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:58:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:07,808 INFO L225 Difference]: With dead ends: 365 [2021-02-21 18:58:07,808 INFO L226 Difference]: Without dead ends: 270 [2021-02-21 18:58:07,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 18:58:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-21 18:58:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 236. [2021-02-21 18:58:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-21 18:58:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 253 transitions. [2021-02-21 18:58:07,913 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 253 transitions. Word has length 159 [2021-02-21 18:58:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:07,913 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 253 transitions. [2021-02-21 18:58:07,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:58:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 253 transitions. [2021-02-21 18:58:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:58:07,916 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:07,916 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] [2021-02-21 18:58:07,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:58:07,917 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:07,917 INFO L82 PathProgramCache]: Analyzing trace with hash -699960703, now seen corresponding path program 1 times [2021-02-21 18:58:07,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:07,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982206141] [2021-02-21 18:58:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:07,922 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:08,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:08,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:08,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:08,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:58:08,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:58:08,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:58:08,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,438 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:58:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:58:08,556 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:58:08,557 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:58:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:58:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:58:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:58:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:08,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:08,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:08,634 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 18:58:08,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982206141] [2021-02-21 18:58:08,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:08,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:58:08,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492121949] [2021-02-21 18:58:08,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:58:08,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:08,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:58:08,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:58:08,637 INFO L87 Difference]: Start difference. First operand 236 states and 253 transitions. Second operand 9 states. [2021-02-21 18:58:09,263 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:09,694 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:58:10,087 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:58:10,434 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:10,817 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:11,172 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:12,288 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:58:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:14,242 INFO L93 Difference]: Finished difference Result 616 states and 706 transitions. [2021-02-21 18:58:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:58:14,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:58:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:14,250 INFO L225 Difference]: With dead ends: 616 [2021-02-21 18:58:14,250 INFO L226 Difference]: Without dead ends: 495 [2021-02-21 18:58:14,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:58:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-02-21 18:58:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2021-02-21 18:58:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2021-02-21 18:58:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 481 transitions. [2021-02-21 18:58:14,419 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 481 transitions. Word has length 168 [2021-02-21 18:58:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:14,421 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 481 transitions. [2021-02-21 18:58:14,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:58:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 481 transitions. [2021-02-21 18:58:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:58:14,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:14,426 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] [2021-02-21 18:58:14,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:58:14,426 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:14,427 INFO L82 PathProgramCache]: Analyzing trace with hash -541317364, now seen corresponding path program 1 times [2021-02-21 18:58:14,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:14,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651865734] [2021-02-21 18:58:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:14,431 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,872 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:58:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:58:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:58:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:58:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:58:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:14,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:14,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:14,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:58:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:15,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:15,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:15,051 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 18:58:15,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651865734] [2021-02-21 18:58:15,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:15,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:58:15,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908971085] [2021-02-21 18:58:15,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:58:15,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:15,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:58:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:58:15,054 INFO L87 Difference]: Start difference. First operand 432 states and 481 transitions. Second operand 9 states. [2021-02-21 18:58:15,673 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:17,643 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:18,043 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:18,498 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:18,899 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:19,268 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:19,652 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:20,004 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:20,712 INFO L93 Difference]: Finished difference Result 1233 states and 1524 transitions. [2021-02-21 18:58:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:58:20,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-21 18:58:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:20,722 INFO L225 Difference]: With dead ends: 1233 [2021-02-21 18:58:20,722 INFO L226 Difference]: Without dead ends: 916 [2021-02-21 18:58:20,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:58:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-02-21 18:58:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 728. [2021-02-21 18:58:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2021-02-21 18:58:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 834 transitions. [2021-02-21 18:58:21,109 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 834 transitions. Word has length 176 [2021-02-21 18:58:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:21,110 INFO L480 AbstractCegarLoop]: Abstraction has 728 states and 834 transitions. [2021-02-21 18:58:21,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:58:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 834 transitions. [2021-02-21 18:58:21,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:58:21,115 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:21,115 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] [2021-02-21 18:58:21,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:58:21,116 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:21,116 INFO L82 PathProgramCache]: Analyzing trace with hash -482503353, now seen corresponding path program 1 times [2021-02-21 18:58:21,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:21,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995582962] [2021-02-21 18:58:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:21,121 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,490 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:58:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:58:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:58:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:58:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:58:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-21 18:58:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:21,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:21,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:21,664 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 18:58:21,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995582962] [2021-02-21 18:58:21,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:21,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:58:21,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761353444] [2021-02-21 18:58:21,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:58:21,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:21,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:58:21,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:58:21,666 INFO L87 Difference]: Start difference. First operand 728 states and 834 transitions. Second operand 6 states. [2021-02-21 18:58:22,457 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:23,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:23,394 INFO L93 Difference]: Finished difference Result 1190 states and 1405 transitions. [2021-02-21 18:58:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 18:58:23,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2021-02-21 18:58:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:23,400 INFO L225 Difference]: With dead ends: 1190 [2021-02-21 18:58:23,400 INFO L226 Difference]: Without dead ends: 577 [2021-02-21 18:58:23,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:58:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-02-21 18:58:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 547. [2021-02-21 18:58:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2021-02-21 18:58:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 598 transitions. [2021-02-21 18:58:23,660 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 598 transitions. Word has length 181 [2021-02-21 18:58:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:23,661 INFO L480 AbstractCegarLoop]: Abstraction has 547 states and 598 transitions. [2021-02-21 18:58:23,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:58:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 598 transitions. [2021-02-21 18:58:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:58:23,664 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:23,664 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] [2021-02-21 18:58:23,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:58:23,665 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:23,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1868499445, now seen corresponding path program 1 times [2021-02-21 18:58:23,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:23,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238818572] [2021-02-21 18:58:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:23,669 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:23,778 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:23,864 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:24,129 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:58:24,130 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:58:24,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:58:24,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:58:24 BoogieIcfgContainer [2021-02-21 18:58:24,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:58:24,175 INFO L168 Benchmark]: Toolchain (without parser) took 24430.54 ms. Allocated memory was 157.3 MB in the beginning and 511.7 MB in the end (delta: 354.4 MB). Free memory was 133.2 MB in the beginning and 272.0 MB in the end (delta: -138.9 MB). Peak memory consumption was 215.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:24,175 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 130.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:58:24,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.15 ms. Allocated memory is still 157.3 MB. Free memory was 131.9 MB in the beginning and 111.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:24,176 INFO L168 Benchmark]: Boogie Preprocessor took 147.01 ms. Allocated memory is still 157.3 MB. Free memory was 111.4 MB in the beginning and 138.4 MB in the end (delta: -27.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:24,178 INFO L168 Benchmark]: RCFGBuilder took 1732.19 ms. Allocated memory is still 157.3 MB. Free memory was 138.4 MB in the beginning and 90.2 MB in the end (delta: 48.2 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:24,181 INFO L168 Benchmark]: TraceAbstraction took 21949.33 ms. Allocated memory was 157.3 MB in the beginning and 511.7 MB in the end (delta: 354.4 MB). Free memory was 90.2 MB in the beginning and 272.0 MB in the end (delta: -181.9 MB). Peak memory consumption was 172.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:24,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 130.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 584.15 ms. Allocated memory is still 157.3 MB. Free memory was 131.9 MB in the beginning and 111.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 147.01 ms. Allocated memory is still 157.3 MB. Free memory was 111.4 MB in the beginning and 138.4 MB in the end (delta: -27.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1732.19 ms. Allocated memory is still 157.3 MB. Free memory was 138.4 MB in the beginning and 90.2 MB in the end (delta: 48.2 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21949.33 ms. Allocated memory was 157.3 MB in the beginning and 511.7 MB in the end (delta: 354.4 MB). Free memory was 90.2 MB in the beginning and 272.0 MB in the end (delta: -181.9 MB). Peak memory consumption was 172.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 348]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L560] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L757] int waterLevel = 1; [L758] int methaneLevelCritical = 0; [L846] int cleanupTimeShifts = 4; [L919] int retValue_acc ; [L920] int tmp ; [L924] FCALL select_helpers() [L925] FCALL select_features() [L926] CALL, EXPR valid_product() [L382] int retValue_acc ; [L385] retValue_acc = 1 [L386] return (retValue_acc); [L926] RET, EXPR valid_product() [L926] tmp = valid_product() [L928] COND TRUE \read(tmp) [L930] FCALL setup() [L931] CALL runTest() [L913] CALL test() [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) [L69] CALL waterRise() [L775] COND TRUE waterLevel < 2 [L776] waterLevel = waterLevel + 1 [L69] RET waterRise() [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L102] CALL timeShift() [L130] COND FALSE !(\read(pumpRunning)) [L137] COND TRUE \read(systemActive) [L139] CALL processEnvironment() [L159] int tmp ; [L162] COND FALSE !(\read(pumpRunning)) [L177] FCALL processEnvironment__wrappee__base() [L139] RET processEnvironment() [L145] CALL __utac_acc__Specification3_spec__1() [L311] int tmp ; [L312] int tmp___0 ; [L313] int tmp___1 ; [L317] CALL, EXPR isMethaneLevelCritical() [L796] int retValue_acc ; [L799] retValue_acc = methaneLevelCritical [L800] return (retValue_acc); [L317] RET, EXPR isMethaneLevelCritical() [L317] tmp = isMethaneLevelCritical() [L319] COND FALSE !(\read(tmp)) [L323] CALL, EXPR getWaterLevel() [L828] int retValue_acc ; [L831] retValue_acc = waterLevel [L832] return (retValue_acc); [L323] RET, EXPR getWaterLevel() [L323] tmp___0 = getWaterLevel() [L325] COND TRUE tmp___0 == 2 [L327] CALL, EXPR isPumpRunning() [L229] int retValue_acc ; [L232] retValue_acc = pumpRunning [L233] return (retValue_acc); [L327] RET, EXPR isPumpRunning() [L327] tmp___1 = isPumpRunning() [L329] COND FALSE !(\read(tmp___1)) [L333] CALL __automaton_fail() [L348] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 633 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1095 SDtfs, 1810 SDslu, 1378 SDs, 0 SdLazy, 2870 SolverSat, 572 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 StatesRemovedByMinimization, 5 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...