/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:43,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:43,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:43,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:12:43,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:12:43,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:12:43,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:12:43,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:12:43,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:12:43,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:12:43,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:12:43,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:12:43,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:43,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:43,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:43,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:43,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:43,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:43,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:43,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:43,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:43,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:43,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:43,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:43,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:43,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:43,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:43,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:43,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:12:43,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:43,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:43,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:43,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:43,416 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:43,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:43,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:43,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:43,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:43,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:43,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:43,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:43,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:43,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:43,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:43,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:43,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:43,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:43,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:43,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:43,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:43,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:43,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:43,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:43,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:43,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:43,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:43,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:43,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:43,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:43,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:43,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:43,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:43,833 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:43,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2021-02-23 13:12:43,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d158051d5/726a8be48bfe4ad298a9c1adec92a36b/FLAG6fb71aaf8 [2021-02-23 13:12:44,608 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:44,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2021-02-23 13:12:44,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d158051d5/726a8be48bfe4ad298a9c1adec92a36b/FLAG6fb71aaf8 [2021-02-23 13:12:44,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d158051d5/726a8be48bfe4ad298a9c1adec92a36b [2021-02-23 13:12:44,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:12:45,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:12:45,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:45,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:12:45,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:12:45,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:44" (1/1) ... [2021-02-23 13:12:45,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b71611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45, skipping insertion in model container [2021-02-23 13:12:45,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:44" (1/1) ... [2021-02-23 13:12:45,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:12:45,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:12:45,330 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_1092b.c[2109,2122] [2021-02-23 13:12:45,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:45,346 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:12:45,406 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_1092b.c[2109,2122] [2021-02-23 13:12:45,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:45,429 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:12:45,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45 WrapperNode [2021-02-23 13:12:45,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:45,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:12:45,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:12:45,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:12:45,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (1/1) ... [2021-02-23 13:12:45,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:12:45,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:12:45,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:12:45,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:12:45,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (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 13:12:45,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:12:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:12:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:12:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 13:12:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2021-02-23 13:12:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:12:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:12:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:12:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:12:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:12:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 13:12:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2021-02-23 13:12:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:12:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:12:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:12:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:12:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:12:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:12:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:12:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:12:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:12:46,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:12:46,199 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 13:12:46,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:46 BoogieIcfgContainer [2021-02-23 13:12:46,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:12:46,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:12:46,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:12:46,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:12:46,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:12:44" (1/3) ... [2021-02-23 13:12:46,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1595ac43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:46, skipping insertion in model container [2021-02-23 13:12:46,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:45" (2/3) ... [2021-02-23 13:12:46,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1595ac43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:46, skipping insertion in model container [2021-02-23 13:12:46,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:46" (3/3) ... [2021-02-23 13:12:46,212 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2021-02-23 13:12:46,230 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:12:46,244 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:12:46,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:12:46,324 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:12:46,324 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:12:46,325 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:12:46,325 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:12:46,325 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:12:46,325 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:12:46,325 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:12:46,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:12:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-02-23 13:12:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-23 13:12:46,351 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:46,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:12:46,352 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:46,359 INFO L82 PathProgramCache]: Analyzing trace with hash -783679648, now seen corresponding path program 1 times [2021-02-23 13:12:46,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:46,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973191570] [2021-02-23 13:12:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:46,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:46,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:46,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:46,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:46,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:46,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:46,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:46,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:46,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:46,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:46,752 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 13:12:46,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973191570] [2021-02-23 13:12:46,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:46,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:12:46,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16353691] [2021-02-23 13:12:46,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:12:46,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:46,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:12:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:12:46,779 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2021-02-23 13:12:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:46,998 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2021-02-23 13:12:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:12:47,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-02-23 13:12:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:47,011 INFO L225 Difference]: With dead ends: 76 [2021-02-23 13:12:47,012 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 13:12:47,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 13:12:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 13:12:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-23 13:12:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 13:12:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2021-02-23 13:12:47,066 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2021-02-23 13:12:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:47,066 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-02-23 13:12:47,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:12:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2021-02-23 13:12:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-23 13:12:47,068 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:47,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:12:47,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:12:47,069 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1003615513, now seen corresponding path program 1 times [2021-02-23 13:12:47,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:47,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193925879] [2021-02-23 13:12:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:47,122 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:47,198 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:47,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:12:47,255 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:12:47,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:12:47,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:12:47 BoogieIcfgContainer [2021-02-23 13:12:47,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:12:47,298 INFO L168 Benchmark]: Toolchain (without parser) took 2306.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 71.8 MB in the end (delta: 53.3 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:47,299 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:12:47,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.86 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 113.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:47,301 INFO L168 Benchmark]: Boogie Preprocessor took 100.78 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 111.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:47,302 INFO L168 Benchmark]: RCFGBuilder took 668.38 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 125.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:47,303 INFO L168 Benchmark]: TraceAbstraction took 1092.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 71.8 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:47,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 421.86 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 113.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.78 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 111.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 668.38 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 125.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1092.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 71.8 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L94] CALL, EXPR ceil_double(x) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, x=0] [L31] COND TRUE j0 < 20 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=0] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=0] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [\old(x)=0, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=0] [L94] RET, EXPR ceil_double(x) VAL [ceil_double(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=0, x=0] [L98] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 4 SDslu, 50 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1054 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...