/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:41,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:41,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:41,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:55:41,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:55:41,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:55:41,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:55:41,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:55:41,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:55:41,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:55:41,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:55:41,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:55:41,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:41,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:41,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:41,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:41,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:41,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:41,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:41,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:41,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:41,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:41,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:41,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:41,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:55:41,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:55:41,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:55:41,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:55:41,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:55:41,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:55:41,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:55:41,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:55:41,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:55:41,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:55:41,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:55:41,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:55:41,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:55:41,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:55:41,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:41,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:41,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:41,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:41,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:41,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:41,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:41,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:41,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:41,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:41,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:41,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:41,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:41,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:41,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:41,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:41,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:41,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:41,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:41,534 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:41,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:41,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:41,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:41,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:41,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:41,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:41,536 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:41,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:41,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:41,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:41,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:41,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:41,917 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:41,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2021-02-24 03:55:42,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33732478/d061ffcc1d3c4c50848059ef4155e8b9/FLAGb1167984a [2021-02-24 03:55:42,675 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:42,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2021-02-24 03:55:42,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33732478/d061ffcc1d3c4c50848059ef4155e8b9/FLAGb1167984a [2021-02-24 03:55:43,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33732478/d061ffcc1d3c4c50848059ef4155e8b9 [2021-02-24 03:55:43,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:43,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:43,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:43,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:43,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:43,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383e8ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43, skipping insertion in model container [2021-02-24 03:55:43,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:43,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:43,237 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-02-24 03:55:43,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:43,259 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:43,327 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-02-24 03:55:43,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:43,354 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:43,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43 WrapperNode [2021-02-24 03:55:43,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:43,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:43,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:43,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:43,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:43,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:43,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:43,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:43,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (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 [2021-02-24 03:55:43,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-24 03:55:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-24 03:55:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-24 03:55:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-24 03:55:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-24 03:55:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-24 03:55:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-24 03:55:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:44,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:44,258 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 03:55:44,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:44 BoogieIcfgContainer [2021-02-24 03:55:44,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:44,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:44,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:44,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:44,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:43" (1/3) ... [2021-02-24 03:55:44,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c45522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:44, skipping insertion in model container [2021-02-24 03:55:44,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (2/3) ... [2021-02-24 03:55:44,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c45522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:44, skipping insertion in model container [2021-02-24 03:55:44,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:44" (3/3) ... [2021-02-24 03:55:44,274 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-02-24 03:55:44,283 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:44,289 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:44,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:44,355 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:44,355 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:44,355 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:44,355 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:44,356 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:44,356 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:44,356 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:44,357 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2021-02-24 03:55:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 03:55:44,408 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:44,409 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] [2021-02-24 03:55:44,409 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1888106418, now seen corresponding path program 1 times [2021-02-24 03:55:44,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:44,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228704125] [2021-02-24 03:55:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:44,533 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:55:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:44,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228704125] [2021-02-24 03:55:44,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:44,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:44,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6971464] [2021-02-24 03:55:44,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:44,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:44,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:44,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:44,916 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2021-02-24 03:55:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:45,382 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2021-02-24 03:55:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:45,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-24 03:55:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:45,396 INFO L225 Difference]: With dead ends: 169 [2021-02-24 03:55:45,396 INFO L226 Difference]: Without dead ends: 86 [2021-02-24 03:55:45,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:55:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-24 03:55:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-24 03:55:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-24 03:55:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-02-24 03:55:45,488 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 40 [2021-02-24 03:55:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:45,488 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-02-24 03:55:45,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-02-24 03:55:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-24 03:55:45,492 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:45,492 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] [2021-02-24 03:55:45,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:45,493 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash -469021814, now seen corresponding path program 1 times [2021-02-24 03:55:45,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:45,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158001716] [2021-02-24 03:55:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:45,498 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:55:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:45,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:45,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158001716] [2021-02-24 03:55:45,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:45,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:55:45,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684649487] [2021-02-24 03:55:45,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:55:45,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:45,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:55:45,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:55:45,780 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 6 states. [2021-02-24 03:55:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:46,171 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2021-02-24 03:55:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:55:46,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2021-02-24 03:55:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:46,176 INFO L225 Difference]: With dead ends: 120 [2021-02-24 03:55:46,176 INFO L226 Difference]: Without dead ends: 91 [2021-02-24 03:55:46,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:55:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-24 03:55:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-02-24 03:55:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-24 03:55:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-24 03:55:46,198 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 50 [2021-02-24 03:55:46,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:46,199 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-24 03:55:46,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:55:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-24 03:55:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 03:55:46,201 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:46,201 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] [2021-02-24 03:55:46,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:46,202 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1028161047, now seen corresponding path program 1 times [2021-02-24 03:55:46,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:46,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981028666] [2021-02-24 03:55:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:46,209 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:46,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:46,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:46,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:55:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:46,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:46,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:55:46,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:46,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:46,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:46,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:46,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981028666] [2021-02-24 03:55:46,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:46,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:55:46,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538697687] [2021-02-24 03:55:46,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:55:46,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:46,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:55:46,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:55:46,553 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 6 states. [2021-02-24 03:55:46,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:46,973 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-02-24 03:55:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:55:46,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-24 03:55:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:46,985 INFO L225 Difference]: With dead ends: 124 [2021-02-24 03:55:46,986 INFO L226 Difference]: Without dead ends: 95 [2021-02-24 03:55:46,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:55:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-24 03:55:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2021-02-24 03:55:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-24 03:55:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-24 03:55:47,026 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 53 [2021-02-24 03:55:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:47,027 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-24 03:55:47,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:55:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-24 03:55:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 03:55:47,029 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:47,029 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] [2021-02-24 03:55:47,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:55:47,030 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:47,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1740635735, now seen corresponding path program 1 times [2021-02-24 03:55:47,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:47,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018629321] [2021-02-24 03:55:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:47,033 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:47,057 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:47,077 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:47,109 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:47,109 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:47,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:55:47,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:47 BoogieIcfgContainer [2021-02-24 03:55:47,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:47,132 INFO L168 Benchmark]: Toolchain (without parser) took 4118.68 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 128.2 MB in the beginning and 156.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:47,132 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:47,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:47,134 INFO L168 Benchmark]: Boogie Preprocessor took 84.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:47,134 INFO L168 Benchmark]: RCFGBuilder took 820.04 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 127.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:47,135 INFO L168 Benchmark]: TraceAbstraction took 2864.67 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.5 MB in the beginning and 156.5 MB in the end (delta: -30.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:47,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 820.04 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 127.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2864.67 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.5 MB in the beginning and 156.5 MB in the end (delta: -30.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 87]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] RET, EXPR __fpclassify_double(x) [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 282 SDtfs, 59 SDslu, 510 SDs, 0 SdLazy, 380 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...