/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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:04,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:04,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:04,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:04,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:04,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:04,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:04,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:04,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:04,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:04,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:04,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:04,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:04,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:04,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:04,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:04,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:04,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:04,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:04,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:04,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:04,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:04,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:04,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:04,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:25:04,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:25:04,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:25:04,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:25:04,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:25:04,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:25:04,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:25:04,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:25:04,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:25:04,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:25:04,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:25:04,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:25:04,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:25:04,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:25:04,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:04,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:04,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:04,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:04,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:04,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:04,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:04,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:04,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:04,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:04,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:04,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:04,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:04,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:04,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:04,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:04,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:04,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:04,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:04,523 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:04,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:04,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:04,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:04,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:04,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:04,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:04,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:04,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:04,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:04,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:04,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:04,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:04,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-23 20:25:05,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6645e46/ef94ce54bcaf449db184221e2624ca1b/FLAGfa92c2a42 [2020-10-23 20:25:05,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:05,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-23 20:25:05,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6645e46/ef94ce54bcaf449db184221e2624ca1b/FLAGfa92c2a42 [2020-10-23 20:25:06,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6645e46/ef94ce54bcaf449db184221e2624ca1b [2020-10-23 20:25:06,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:06,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:06,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:06,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:06,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:06,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34abccad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06, skipping insertion in model container [2020-10-23 20:25:06,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:06,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:06,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:06,337 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:06,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:06,428 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:06,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06 WrapperNode [2020-10-23 20:25:06,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:06,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:06,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:06,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:06,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (1/1) ... [2020-10-23 20:25:06,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:06,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:06,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:06,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:06,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (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 [2020-10-23 20:25:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-23 20:25:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-23 20:25:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 20:25:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:25:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-23 20:25:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-23 20:25:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 20:25:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:07,359 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:07,360 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 20:25:07,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:07 BoogieIcfgContainer [2020-10-23 20:25:07,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:07,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:07,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:07,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:07,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:06" (1/3) ... [2020-10-23 20:25:07,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b9ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:07, skipping insertion in model container [2020-10-23 20:25:07,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:06" (2/3) ... [2020-10-23 20:25:07,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b9ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:07, skipping insertion in model container [2020-10-23 20:25:07,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:07" (3/3) ... [2020-10-23 20:25:07,371 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-10-23 20:25:07,383 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:07,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:07,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:07,427 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:07,427 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:07,427 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:07,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:07,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:07,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:07,428 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:07,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-23 20:25:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:25:07,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:07,457 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] [2020-10-23 20:25:07,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:07,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash 310684608, now seen corresponding path program 1 times [2020-10-23 20:25:07,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:07,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541104323] [2020-10-23 20:25:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:07,546 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:25:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:07,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541104323] [2020-10-23 20:25:07,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:07,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:07,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243220970] [2020-10-23 20:25:07,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:07,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:07,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:07,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:07,857 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-23 20:25:08,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:08,385 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2020-10-23 20:25:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:08,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-23 20:25:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:08,399 INFO L225 Difference]: With dead ends: 185 [2020-10-23 20:25:08,399 INFO L226 Difference]: Without dead ends: 93 [2020-10-23 20:25:08,404 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 [2020-10-23 20:25:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-23 20:25:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-23 20:25:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-23 20:25:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-23 20:25:08,467 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 41 [2020-10-23 20:25:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:08,468 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-23 20:25:08,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-23 20:25:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-23 20:25:08,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:08,472 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] [2020-10-23 20:25:08,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:08,472 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:08,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:08,473 INFO L82 PathProgramCache]: Analyzing trace with hash -310270038, now seen corresponding path program 1 times [2020-10-23 20:25:08,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:08,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318594082] [2020-10-23 20:25:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:08,477 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:25:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:08,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318594082] [2020-10-23 20:25:08,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:08,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:25:08,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735209262] [2020-10-23 20:25:08,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:25:08,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:08,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:25:08,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:25:08,766 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 6 states. [2020-10-23 20:25:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:09,252 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-10-23 20:25:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:25:09,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-23 20:25:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:09,258 INFO L225 Difference]: With dead ends: 130 [2020-10-23 20:25:09,259 INFO L226 Difference]: Without dead ends: 98 [2020-10-23 20:25:09,263 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 [2020-10-23 20:25:09,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-23 20:25:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-23 20:25:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-23 20:25:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-10-23 20:25:09,305 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 55 [2020-10-23 20:25:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:09,309 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-10-23 20:25:09,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:25:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-10-23 20:25:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:25:09,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:09,313 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] [2020-10-23 20:25:09,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:09,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash 344804155, now seen corresponding path program 1 times [2020-10-23 20:25:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:09,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783729716] [2020-10-23 20:25:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:09,322 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:25:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:09,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783729716] [2020-10-23 20:25:09,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:09,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:25:09,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012401987] [2020-10-23 20:25:09,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:25:09,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:09,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:25:09,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:25:09,546 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 6 states. [2020-10-23 20:25:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:10,177 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2020-10-23 20:25:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:25:10,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-23 20:25:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:10,180 INFO L225 Difference]: With dead ends: 134 [2020-10-23 20:25:10,180 INFO L226 Difference]: Without dead ends: 102 [2020-10-23 20:25:10,181 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 [2020-10-23 20:25:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-23 20:25:10,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2020-10-23 20:25:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-23 20:25:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-10-23 20:25:10,198 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 58 [2020-10-23 20:25:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:10,198 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-10-23 20:25:10,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:25:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-10-23 20:25:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:25:10,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:10,201 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, 1, 1, 1, 1, 1] [2020-10-23 20:25:10,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:25:10,201 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:10,202 INFO L82 PathProgramCache]: Analyzing trace with hash 956683003, now seen corresponding path program 1 times [2020-10-23 20:25:10,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:10,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386381162] [2020-10-23 20:25:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:10,205 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:10,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:10,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:10,325 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:10,325 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:10,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:25:10,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:10 BoogieIcfgContainer [2020-10-23 20:25:10,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:10,349 INFO L168 Benchmark]: Toolchain (without parser) took 4315.76 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.9 MB in the beginning and 127.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 36.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,350 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 102.0 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:10,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.36 ms. Allocated memory is still 154.1 MB. Free memory was 130.3 MB in the beginning and 120.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,352 INFO L168 Benchmark]: Boogie Preprocessor took 85.59 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,353 INFO L168 Benchmark]: RCFGBuilder took 845.24 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 127.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,354 INFO L168 Benchmark]: TraceAbstraction took 2982.67 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 126.5 MB in the beginning and 127.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 102.0 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 390.36 ms. Allocated memory is still 154.1 MB. Free memory was 130.3 MB in the beginning and 120.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.59 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 845.24 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 127.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2982.67 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 126.5 MB in the beginning and 127.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1252a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 303 SDtfs, 65 SDslu, 540 SDs, 0 SdLazy, 408 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s 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=103occurred 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...