/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_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:55:49,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:55:49,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:55:50,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:55:50,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:55:50,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:55:50,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:55:50,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:55:50,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:55:50,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:55:50,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:55:50,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:55:50,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:55:50,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:55:50,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:55:50,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:55:50,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:55:50,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:55:50,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:55:50,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:55:50,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:55:50,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:55:50,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:55:50,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:55:50,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:55:50,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:55:50,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:55:50,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:55:50,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:55:50,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:55:50,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:55:50,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:55:50,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:55:50,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:55:50,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:55:50,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:55:50,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:55:50,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:55:50,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:55:50,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:55:50,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:55:50,118 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 18:55:50,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:55:50,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:55:50,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:55:50,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:55:50,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:55:50,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:55:50,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:55:50,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:55:50,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:55:50,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:55:50,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:55:50,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:55:50,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:55:50,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:55:50,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:55:50,149 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:55:50,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:55:50,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:55:50,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:55:50,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:55:50,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:55:50,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:55:50,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:55:50,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:55:50,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:55:50,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:55:50,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:55:50,574 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:55:50,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2021-02-21 18:55:50,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75a09d39/d4d73157b5994b9f8db4932e106c7d96/FLAG835f9c2f3 [2021-02-21 18:55:51,361 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:55:51,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2021-02-21 18:55:51,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75a09d39/d4d73157b5994b9f8db4932e106c7d96/FLAG835f9c2f3 [2021-02-21 18:55:51,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75a09d39/d4d73157b5994b9f8db4932e106c7d96 [2021-02-21 18:55:51,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:55:51,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:55:51,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:55:51,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:55:51,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:55:51,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:55:51" (1/1) ... [2021-02-21 18:55:51,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282cd639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:51, skipping insertion in model container [2021-02-21 18:55:51,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:55:51" (1/1) ... [2021-02-21 18:55:51,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:55:51,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:55:51,907 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_product07.cil.c[1281,1294] [2021-02-21 18:55:52,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:55:52,036 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:55:52,049 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_product07.cil.c[1281,1294] [2021-02-21 18:55:52,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:55:52,181 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:55:52,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52 WrapperNode [2021-02-21 18:55:52,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:55:52,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:55:52,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:55:52,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:55:52,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (1/1) ... [2021-02-21 18:55:52,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:55:52,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:55:52,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:55:52,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:55:52,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (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 18:55:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:55:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:55:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:55:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:55:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:55:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:55:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:55:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:55:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:55:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:55:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:55:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:55:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:55:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:55:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:55:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:55:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:55:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:55:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:55:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:55:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:55:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:55:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:55:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:55:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:55:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:55:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:55:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:55:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:55:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:55:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:55:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:55:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:55:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:55:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:55:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:55:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:55:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:55:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:55:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:55:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:55:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:55:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:55:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:55:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:55:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:55:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:55:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:55:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:55:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:55:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:55:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:55:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:55:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:55:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:55:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:55:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:55:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:55:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:55:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:55:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:55:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:55:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:55:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:55:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:55:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:55:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:55:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:55:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:55:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:55:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:55:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:55:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:55:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:55:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:55:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:55:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:55:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:55:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:55:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:55:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:55:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:55:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:55:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:55:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:55:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:55:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:55:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:55:53,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:55:53,600 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:55:53,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:55:53 BoogieIcfgContainer [2021-02-21 18:55:53,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:55:53,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:55:53,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:55:53,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:55:53,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:55:51" (1/3) ... [2021-02-21 18:55:53,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552a936a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:55:53, skipping insertion in model container [2021-02-21 18:55:53,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:52" (2/3) ... [2021-02-21 18:55:53,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552a936a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:55:53, skipping insertion in model container [2021-02-21 18:55:53,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:55:53" (3/3) ... [2021-02-21 18:55:53,615 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product07.cil.c [2021-02-21 18:55:53,622 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:55:53,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:55:53,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:55:53,670 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:55:53,670 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:55:53,670 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:55:53,670 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:55:53,671 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:55:53,671 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:55:53,671 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:55:53,671 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:55:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2021-02-21 18:55:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:55:53,713 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:55:53,714 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 18:55:53,715 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:55:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:55:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1184195747, now seen corresponding path program 1 times [2021-02-21 18:55:53,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:55:53,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864467574] [2021-02-21 18:55:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:55:53,818 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:55:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,579 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:55:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:55:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:55:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:55:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:55:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:55:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:55:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:55:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:55:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:54,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:54,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:54,777 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 18:55:54,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864467574] [2021-02-21 18:55:54,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:55:54,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:55:54,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563732508] [2021-02-21 18:55:54,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:55:54,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:55:54,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:55:54,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:55:54,815 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 3 states. [2021-02-21 18:55:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:55:56,344 INFO L93 Difference]: Finished difference Result 433 states and 520 transitions. [2021-02-21 18:55:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:55:56,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:55:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:55:56,382 INFO L225 Difference]: With dead ends: 433 [2021-02-21 18:55:56,382 INFO L226 Difference]: Without dead ends: 276 [2021-02-21 18:55:56,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:55:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-21 18:55:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 235. [2021-02-21 18:55:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-21 18:55:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 255 transitions. [2021-02-21 18:55:56,606 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 255 transitions. Word has length 158 [2021-02-21 18:55:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:55:56,609 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 255 transitions. [2021-02-21 18:55:56,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:55:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 255 transitions. [2021-02-21 18:55:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:55:56,624 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:55:56,624 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 18:55:56,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:55:56,625 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:55:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:55:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1802358870, now seen corresponding path program 1 times [2021-02-21 18:55:56,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:55:56,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836436737] [2021-02-21 18:55:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:55:56,631 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:55:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:56,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:56,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:56,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:56,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:55:56,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:56,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,045 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:55:57,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:55:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:55:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:55:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:55:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:55:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:55:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:55:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:55:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:57,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:57,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:57,217 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 18:55:57,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836436737] [2021-02-21 18:55:57,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:55:57,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:55:57,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802979615] [2021-02-21 18:55:57,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:55:57,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:55:57,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:55:57,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:55:57,224 INFO L87 Difference]: Start difference. First operand 235 states and 255 transitions. Second operand 4 states. [2021-02-21 18:55:57,951 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:55:58,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:55:58,820 INFO L93 Difference]: Finished difference Result 343 states and 386 transitions. [2021-02-21 18:55:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:55:58,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:55:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:55:58,825 INFO L225 Difference]: With dead ends: 343 [2021-02-21 18:55:58,826 INFO L226 Difference]: Without dead ends: 259 [2021-02-21 18:55:58,828 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 18:55:58,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-21 18:55:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 225. [2021-02-21 18:55:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2021-02-21 18:55:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 242 transitions. [2021-02-21 18:55:58,914 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 242 transitions. Word has length 159 [2021-02-21 18:55:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:55:58,915 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 242 transitions. [2021-02-21 18:55:58,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:55:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 242 transitions. [2021-02-21 18:55:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:55:58,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:55:58,918 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 18:55:58,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:55:58,918 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:55:58,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:55:58,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1569416838, now seen corresponding path program 1 times [2021-02-21 18:55:58,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:55:58,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691223064] [2021-02-21 18:55:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:55:58,923 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:55:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:55:59,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:55:59,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:55:59,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:55:59,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:55:59,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:55:59,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:55:59,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,385 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:55:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:55:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:55:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:55:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:55:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:55:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:55:59,494 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:55:59,495 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:55:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:55:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:55:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:55:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:55:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:55:59,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:55:59,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:55:59,572 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 18:55:59,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691223064] [2021-02-21 18:55:59,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:55:59,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:55:59,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884889119] [2021-02-21 18:55:59,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:55:59,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:55:59,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:55:59,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:55:59,576 INFO L87 Difference]: Start difference. First operand 225 states and 242 transitions. Second operand 9 states. [2021-02-21 18:56:00,189 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:00,636 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:56:01,004 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:56:01,372 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:01,761 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:02,143 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:03,171 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:05,054 INFO L93 Difference]: Finished difference Result 583 states and 673 transitions. [2021-02-21 18:56:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:56:05,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:56:05,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:05,059 INFO L225 Difference]: With dead ends: 583 [2021-02-21 18:56:05,060 INFO L226 Difference]: Without dead ends: 473 [2021-02-21 18:56:05,061 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 18:56:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-02-21 18:56:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 410. [2021-02-21 18:56:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2021-02-21 18:56:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 459 transitions. [2021-02-21 18:56:05,235 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 459 transitions. Word has length 168 [2021-02-21 18:56:05,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:05,235 INFO L480 AbstractCegarLoop]: Abstraction has 410 states and 459 transitions. [2021-02-21 18:56:05,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 459 transitions. [2021-02-21 18:56:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:56:05,239 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:05,239 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 18:56:05,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:56:05,240 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:05,240 INFO L82 PathProgramCache]: Analyzing trace with hash -705763829, now seen corresponding path program 1 times [2021-02-21 18:56:05,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:05,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950862321] [2021-02-21 18:56:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:05,244 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,752 WARN L202 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:05,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:56:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:56:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:56:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:56:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:56:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,971 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 18:56:05,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950862321] [2021-02-21 18:56:05,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:05,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:05,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5709905] [2021-02-21 18:56:05,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:05,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:05,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:05,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:05,981 INFO L87 Difference]: Start difference. First operand 410 states and 459 transitions. Second operand 9 states. [2021-02-21 18:56:06,563 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:08,400 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:08,787 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:09,185 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:09,594 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:09,938 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:10,290 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:10,639 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:11,492 INFO L93 Difference]: Finished difference Result 1167 states and 1458 transitions. [2021-02-21 18:56:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:56:11,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-21 18:56:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:11,508 INFO L225 Difference]: With dead ends: 1167 [2021-02-21 18:56:11,508 INFO L226 Difference]: Without dead ends: 872 [2021-02-21 18:56:11,512 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 18:56:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-02-21 18:56:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 684. [2021-02-21 18:56:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2021-02-21 18:56:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 790 transitions. [2021-02-21 18:56:11,826 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 790 transitions. Word has length 176 [2021-02-21 18:56:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:11,826 INFO L480 AbstractCegarLoop]: Abstraction has 684 states and 790 transitions. [2021-02-21 18:56:11,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 790 transitions. [2021-02-21 18:56:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:56:11,831 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:11,831 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 18:56:11,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:56:11,832 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:11,832 INFO L82 PathProgramCache]: Analyzing trace with hash 866825365, now seen corresponding path program 1 times [2021-02-21 18:56:11,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:11,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633414004] [2021-02-21 18:56:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:11,836 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:11,909 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:11,990 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:12,233 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:56:12,233 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:56:12,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:56:12,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:56:12 BoogieIcfgContainer [2021-02-21 18:56:12,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:56:12,289 INFO L168 Benchmark]: Toolchain (without parser) took 20673.51 ms. Allocated memory was 158.3 MB in the beginning and 406.8 MB in the end (delta: 248.5 MB). Free memory was 114.6 MB in the beginning and 256.3 MB in the end (delta: -141.7 MB). Peak memory consumption was 108.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:12,291 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:56:12,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.52 ms. Allocated memory is still 158.3 MB. Free memory was 113.6 MB in the beginning and 128.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:12,299 INFO L168 Benchmark]: Boogie Preprocessor took 141.01 ms. Allocated memory is still 158.3 MB. Free memory was 128.2 MB in the beginning and 138.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:12,299 INFO L168 Benchmark]: RCFGBuilder took 1277.24 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 138.3 MB in the beginning and 119.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:12,300 INFO L168 Benchmark]: TraceAbstraction took 18678.45 ms. Allocated memory was 190.8 MB in the beginning and 406.8 MB in the end (delta: 216.0 MB). Free memory was 118.5 MB in the beginning and 256.3 MB in the end (delta: -137.9 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:12,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 549.52 ms. Allocated memory is still 158.3 MB. Free memory was 113.6 MB in the beginning and 128.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.01 ms. Allocated memory is still 158.3 MB. Free memory was 128.2 MB in the beginning and 138.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1277.24 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 138.3 MB in the beginning and 119.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18678.45 ms. Allocated memory was 190.8 MB in the beginning and 406.8 MB in the end (delta: 216.0 MB). Free memory was 118.5 MB in the beginning and 256.3 MB in the end (delta: -137.9 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L89] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L813] int waterLevel = 1; [L814] int methaneLevelCritical = 0; [L167] int retValue_acc ; [L168] int tmp ; [L172] FCALL select_helpers() [L173] FCALL select_features() [L174] CALL, EXPR valid_product() [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L174] RET, EXPR valid_product() [L174] tmp = valid_product() [L176] COND TRUE \read(tmp) [L178] FCALL setup() [L179] CALL runTest() [L161] CALL test() [L747] int splverifierCounter ; [L748] int tmp ; [L749] int tmp___0 ; [L750] int tmp___1 ; [L751] int tmp___2 ; [L754] splverifierCounter = 0 [L756] COND TRUE 1 [L758] COND TRUE splverifierCounter < 4 [L764] tmp = __VERIFIER_nondet_int() [L766] COND TRUE \read(tmp) [L768] CALL waterRise() [L831] COND TRUE waterLevel < 2 [L832] waterLevel = waterLevel + 1 [L768] RET waterRise() [L774] tmp___0 = __VERIFIER_nondet_int() [L776] COND FALSE !(\read(tmp___0)) [L784] tmp___2 = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp___2) [L801] CALL timeShift() [L605] COND FALSE !(\read(pumpRunning)) [L612] COND TRUE \read(systemActive) [L614] CALL processEnvironment() [L634] int tmp ; [L637] COND FALSE !(\read(pumpRunning)) [L652] FCALL processEnvironment__wrappee__base() [L614] RET processEnvironment() [L620] CALL __utac_acc__Specification3_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L562] int tmp___1 ; [L566] CALL, EXPR isMethaneLevelCritical() [L852] int retValue_acc ; [L855] retValue_acc = methaneLevelCritical [L856] return (retValue_acc); [L566] RET, EXPR isMethaneLevelCritical() [L566] tmp = isMethaneLevelCritical() [L568] COND FALSE !(\read(tmp)) [L572] CALL, EXPR getWaterLevel() [L884] int retValue_acc ; [L887] retValue_acc = waterLevel [L888] return (retValue_acc); [L572] RET, EXPR getWaterLevel() [L572] tmp___0 = getWaterLevel() [L574] COND TRUE tmp___0 == 2 [L576] CALL, EXPR isPumpRunning() [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); [L576] RET, EXPR isPumpRunning() [L576] tmp___1 = isPumpRunning() [L578] COND FALSE !(\read(tmp___1)) [L582] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 605 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 898 SDtfs, 1124 SDslu, 1273 SDs, 0 SdLazy, 2694 SolverSat, 404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=684occurred 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: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 326 StatesRemovedByMinimization, 4 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...