/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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:11,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:11,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:11,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:11,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:11,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:11,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:11,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:11,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:11,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:11,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:11,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:11,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:11,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:11,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:11,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:11,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:11,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:11,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:11,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:11,623 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 [2021-02-21 15:47:11,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:11,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:11,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:11,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:11,684 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:11,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:11,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:11,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:11,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:11,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:11,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:11,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:11,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:11,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:11,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:11,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:11,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:11,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:11,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:11,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:11,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:11,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:11,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:11,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:11,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:11,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:11,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:11,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:11,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:12,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:12,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:12,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:12,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:12,181 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:12,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2021-02-21 15:47:12,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6399f7b37/7375d7d8fe48491f9d172f5f8c82de5e/FLAG606957849 [2021-02-21 15:47:12,927 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:12,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2021-02-21 15:47:12,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6399f7b37/7375d7d8fe48491f9d172f5f8c82de5e/FLAG606957849 [2021-02-21 15:47:13,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6399f7b37/7375d7d8fe48491f9d172f5f8c82de5e [2021-02-21 15:47:13,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:13,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:13,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:13,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:13,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:13,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe5b0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13, skipping insertion in model container [2021-02-21 15:47:13,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:13,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:13,506 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_1072c.c[2112,2125] [2021-02-21 15:47:13,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:13,520 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:13,553 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_1072c.c[2112,2125] [2021-02-21 15:47:13,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:13,573 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:13,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13 WrapperNode [2021-02-21 15:47:13,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:13,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:13,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:13,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:13,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... [2021-02-21 15:47:13,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:13,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:13,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:13,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:13,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:13,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 15:47:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-21 15:47:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 15:47:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-21 15:47:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:14,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:14,406 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-21 15:47:14,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:14 BoogieIcfgContainer [2021-02-21 15:47:14,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:14,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:14,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:14,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:14,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:13" (1/3) ... [2021-02-21 15:47:14,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:14, skipping insertion in model container [2021-02-21 15:47:14,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:13" (2/3) ... [2021-02-21 15:47:14,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:14, skipping insertion in model container [2021-02-21 15:47:14,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:14" (3/3) ... [2021-02-21 15:47:14,418 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2021-02-21 15:47:14,426 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:14,432 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:14,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:14,483 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:14,483 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:14,483 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:14,483 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:14,483 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:14,484 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:14,484 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:14,484 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-02-21 15:47:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 15:47:14,512 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:14,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:14,514 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:14,521 INFO L82 PathProgramCache]: Analyzing trace with hash -39916397, now seen corresponding path program 1 times [2021-02-21 15:47:14,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:14,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972346012] [2021-02-21 15:47:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:14,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:14,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:14,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:14,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:14,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:14,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:14,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:14,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:14,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:14,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:14,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972346012] [2021-02-21 15:47:14,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:14,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:14,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054883851] [2021-02-21 15:47:14,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:14,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:14,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:14,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:14,925 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2021-02-21 15:47:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:15,191 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-02-21 15:47:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:15,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 15:47:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:15,203 INFO L225 Difference]: With dead ends: 74 [2021-02-21 15:47:15,203 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 15:47:15,207 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 [2021-02-21 15:47:15,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 15:47:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-21 15:47:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-21 15:47:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-02-21 15:47:15,260 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2021-02-21 15:47:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:15,261 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-02-21 15:47:15,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-02-21 15:47:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:47:15,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:15,263 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] [2021-02-21 15:47:15,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:15,264 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1483130551, now seen corresponding path program 1 times [2021-02-21 15:47:15,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:15,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464465951] [2021-02-21 15:47:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:15,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:15,381 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:15,424 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:15,425 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:15,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:15,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:15 BoogieIcfgContainer [2021-02-21 15:47:15,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:15,501 INFO L168 Benchmark]: Toolchain (without parser) took 2238.44 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 83.1 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:15,502 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 158.3 MB. Free memory was 130.5 MB in the beginning and 130.4 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:15,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.47 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 121.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:15,508 INFO L168 Benchmark]: Boogie Preprocessor took 55.18 ms. Allocated memory is still 158.3 MB. Free memory was 121.0 MB in the beginning and 119.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:15,510 INFO L168 Benchmark]: RCFGBuilder took 776.55 ms. Allocated memory is still 158.3 MB. Free memory was 118.9 MB in the beginning and 134.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:15,511 INFO L168 Benchmark]: TraceAbstraction took 1088.29 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 83.1 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:15,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 158.3 MB. Free memory was 130.5 MB in the beginning and 130.4 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.47 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 121.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.18 ms. Allocated memory is still 158.3 MB. Free memory was 121.0 MB in the beginning and 119.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 776.55 ms. Allocated memory is still 158.3 MB. Free memory was 118.9 MB in the beginning and 134.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1088.29 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 83.1 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 88]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 83, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of someBinaryDOUBLEComparisonOperation at line 87. Possible FailurePath: [L83] double x = -0.0; [L84] CALL, EXPR trunc_double(x) VAL [\old(x)=4294967296] [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; VAL [\old(x)=4294967296, x=4294967296] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=-2, signbit=-1, x=4294967296] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=-2, signbit=-1, x=4294967296] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=-2, signbit=-1, x=4294967296] [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=-2, signbit=-1, x=4294967296] [L84] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967300, x=4294967296] [L84] double res = trunc_double(x); [L87] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967300, res == -0.0 && __signbit_double(res) == 1=0, x=4294967296] [L87] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L88] reach_error() VAL [res=4294967300, x=4294967296] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 6 SDslu, 35 SDs, 0 SdLazy, 44 SolverSat, 6 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=41occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 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...