/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/float-newlib/double_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:36:59,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:36:59,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:36:59,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:36:59,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:36:59,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:36:59,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:36:59,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:36:59,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:36:59,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:36:59,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:36:59,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:36:59,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:36:59,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:36:59,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:36:59,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:36:59,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:36:59,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:36:59,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:36:59,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:36:59,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:36:59,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:36:59,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:36:59,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:36:59,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:36:59,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:36:59,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:36:59,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:36:59,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:36:59,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:36:59,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:36:59,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:36:59,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:36:59,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:36:59,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:36:59,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:36:59,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:36:59,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:36:59,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:36:59,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:36:59,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:36:59,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:36:59,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:36:59,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:36:59,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:36:59,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:36:59,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:36:59,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:36:59,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:36:59,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:36:59,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:36:59,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:36:59,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:36:59,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:36:59,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:36:59,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:36:59,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:36:59,519 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:36:59,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:36:59,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:36:59,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:36:59,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:36:59,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:36:59,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:36:59,521 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:36:59,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:36:59,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:36:59,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:36:59,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:36:59,905 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:36:59,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2021-02-23 17:36:59,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79860f314/16e99b465f5345668812bdbbe8e881e9/FLAGb572f0ce0 [2021-02-23 17:37:00,652 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:00,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2021-02-23 17:37:00,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79860f314/16e99b465f5345668812bdbbe8e881e9/FLAGb572f0ce0 [2021-02-23 17:37:01,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79860f314/16e99b465f5345668812bdbbe8e881e9 [2021-02-23 17:37:01,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:01,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:01,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:01,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:01,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:01,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af26946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01, skipping insertion in model container [2021-02-23 17:37:01,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:01,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:01,242 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_1031.c[2057,2070] [2021-02-23 17:37:01,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:01,255 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:01,296 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_1031.c[2057,2070] [2021-02-23 17:37:01,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:01,320 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:01,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01 WrapperNode [2021-02-23 17:37:01,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:01,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:01,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:01,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:01,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... [2021-02-23 17:37:01,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:01,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:01,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:01,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:01,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:01,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:01,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:01,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:01,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:37:01,474 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-23 17:37:01,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:37:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-23 17:37:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:02,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:02,041 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 17:37:02,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:02 BoogieIcfgContainer [2021-02-23 17:37:02,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:02,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:02,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:02,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:02,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:01" (1/3) ... [2021-02-23 17:37:02,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22491b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:02, skipping insertion in model container [2021-02-23 17:37:02,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:01" (2/3) ... [2021-02-23 17:37:02,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22491b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:02, skipping insertion in model container [2021-02-23 17:37:02,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:02" (3/3) ... [2021-02-23 17:37:02,053 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-02-23 17:37:02,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:02,066 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:02,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:02,117 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:02,117 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:02,118 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:02,118 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:02,118 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:02,118 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:02,118 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:02,118 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-23 17:37:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 17:37:02,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:02,150 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] [2021-02-23 17:37:02,150 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:02,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2142288105, now seen corresponding path program 1 times [2021-02-23 17:37:02,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:02,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473135802] [2021-02-23 17:37:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:02,252 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:02,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:02,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:02,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:02,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:02,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:02,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:37:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:02,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:02,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:02,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:02,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:37:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:02,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:02,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:02,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473135802] [2021-02-23 17:37:02,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:02,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:02,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356034815] [2021-02-23 17:37:02,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:02,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:02,536 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2021-02-23 17:37:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:02,990 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2021-02-23 17:37:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:02,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2021-02-23 17:37:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:03,006 INFO L225 Difference]: With dead ends: 153 [2021-02-23 17:37:03,007 INFO L226 Difference]: Without dead ends: 79 [2021-02-23 17:37:03,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-23 17:37:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-02-23 17:37:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 17:37:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-02-23 17:37:03,111 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 37 [2021-02-23 17:37:03,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:03,112 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-02-23 17:37:03,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-02-23 17:37:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-23 17:37:03,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:03,119 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] [2021-02-23 17:37:03,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:03,120 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:03,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1047779281, now seen corresponding path program 1 times [2021-02-23 17:37:03,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:03,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642903426] [2021-02-23 17:37:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:03,138 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:03,248 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:03,294 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:03,330 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:03,331 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:03,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:03,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:03 BoogieIcfgContainer [2021-02-23 17:37:03,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:03,356 INFO L168 Benchmark]: Toolchain (without parser) took 2334.77 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 128.1 MB in the beginning and 150.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:03,357 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 430.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:03,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:03,359 INFO L168 Benchmark]: Boogie Preprocessor took 44.72 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:03,360 INFO L168 Benchmark]: RCFGBuilder took 675.73 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 126.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:03,361 INFO L168 Benchmark]: TraceAbstraction took 1308.32 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.2 MB in the beginning and 150.7 MB in the end (delta: -24.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:03,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 430.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.72 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 675.73 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 126.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1308.32 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.2 MB in the beginning and 150.7 MB in the end (delta: -24.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L77] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND TRUE exponent_less_1023 == 1024 [L45] return x + x; [L77] RET, EXPR round_double(x) [L77] double res = round_double(x); [L80] CALL, EXPR isnan_double(res) [L17] return x != x; [L80] RET, EXPR isnan_double(res) [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 17 SDslu, 64 SDs, 0 SdLazy, 97 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...