/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_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:00,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:00,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:00,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:00,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:00,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:00,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:00,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:00,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:00,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:00,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:00,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:00,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:00,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:00,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:00,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:00,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:00,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:00,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:00,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:00,374 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 15:47:00,400 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:00,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:00,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:00,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:00,403 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:00,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:00,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:00,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:00,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:00,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:00,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:00,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:00,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:00,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:00,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:00,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:00,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:00,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:00,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:00,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:00,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:00,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:00,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:00,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:00,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:00,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:00,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:00,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:00,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:00,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:00,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:00,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:00,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:00,897 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:00,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2021-02-21 15:47:00,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9074ce7/46d7745fefd34a76a9adf601f54365cf/FLAGa1390e282 [2021-02-21 15:47:01,526 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:01,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2021-02-21 15:47:01,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9074ce7/46d7745fefd34a76a9adf601f54365cf/FLAGa1390e282 [2021-02-21 15:47:01,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9074ce7/46d7745fefd34a76a9adf601f54365cf [2021-02-21 15:47:01,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:01,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:01,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:01,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:01,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:01,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:01" (1/1) ... [2021-02-21 15:47:01,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e4da37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:01, skipping insertion in model container [2021-02-21 15:47:01,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:01" (1/1) ... [2021-02-21 15:47:01,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:01,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:02,135 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_1032b.c[2284,2297] [2021-02-21 15:47:02,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:02,152 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:02,218 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_1032b.c[2284,2297] [2021-02-21 15:47:02,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:02,242 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:02,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02 WrapperNode [2021-02-21 15:47:02,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:02,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:02,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:02,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:02,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:02,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:02,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:02,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:02,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (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 15:47:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 15:47:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-21 15:47:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 15:47:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-21 15:47:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:02,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:02,998 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 15:47:03,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:03 BoogieIcfgContainer [2021-02-21 15:47:03,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:03,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:03,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:03,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:01" (1/3) ... [2021-02-21 15:47:03,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f74c1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:03, skipping insertion in model container [2021-02-21 15:47:03,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (2/3) ... [2021-02-21 15:47:03,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f74c1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:03, skipping insertion in model container [2021-02-21 15:47:03,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:03" (3/3) ... [2021-02-21 15:47:03,012 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2021-02-21 15:47:03,019 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:03,024 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:03,045 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:03,072 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:03,072 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:03,072 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:03,073 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:03,073 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:03,073 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:03,073 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:03,073 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-21 15:47:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 15:47:03,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:03,100 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 15:47:03,101 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1093005518, now seen corresponding path program 1 times [2021-02-21 15:47:03,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:03,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623614283] [2021-02-21 15:47:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,513 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 15:47:03,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623614283] [2021-02-21 15:47:03,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:03,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:03,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293178022] [2021-02-21 15:47:03,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:03,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:03,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:03,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:03,541 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2021-02-21 15:47:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:03,888 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2021-02-21 15:47:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:03,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 15:47:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:03,902 INFO L225 Difference]: With dead ends: 78 [2021-02-21 15:47:03,902 INFO L226 Difference]: Without dead ends: 39 [2021-02-21 15:47:03,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-21 15:47:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-02-21 15:47:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-21 15:47:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-02-21 15:47:03,956 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2021-02-21 15:47:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:03,957 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-02-21 15:47:03,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-02-21 15:47:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:47:03,959 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:03,959 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 15:47:03,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:03,959 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:03,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:03,960 INFO L82 PathProgramCache]: Analyzing trace with hash 348154190, now seen corresponding path program 1 times [2021-02-21 15:47:03,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:03,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467362339] [2021-02-21 15:47:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:04,027 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:04,113 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:04,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:04,172 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:04,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:04,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:04 BoogieIcfgContainer [2021-02-21 15:47:04,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:04,239 INFO L168 Benchmark]: Toolchain (without parser) took 2338.40 ms. Allocated memory is still 167.8 MB. Free memory was 143.3 MB in the beginning and 97.5 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,240 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 167.8 MB. Free memory is still 144.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:04,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.20 ms. Allocated memory is still 167.8 MB. Free memory was 142.1 MB in the beginning and 131.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,245 INFO L168 Benchmark]: Boogie Preprocessor took 103.87 ms. Allocated memory is still 167.8 MB. Free memory was 131.3 MB in the beginning and 129.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,246 INFO L168 Benchmark]: RCFGBuilder took 649.93 ms. Allocated memory is still 167.8 MB. Free memory was 129.4 MB in the beginning and 147.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,247 INFO L168 Benchmark]: TraceAbstraction took 1231.98 ms. Allocated memory is still 167.8 MB. Free memory was 147.3 MB in the beginning and 97.5 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 167.8 MB. Free memory is still 144.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.20 ms. Allocated memory is still 167.8 MB. Free memory was 142.1 MB in the beginning and 131.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.87 ms. Allocated memory is still 167.8 MB. Free memory was 131.3 MB in the beginning and 129.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 649.93 ms. Allocated memory is still 167.8 MB. Free memory was 129.4 MB in the beginning and 147.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1231.98 ms. Allocated memory is still 167.8 MB. Free memory was 147.3 MB in the beginning and 97.5 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 36, overapproximation of someUnaryDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 92. Possible FailurePath: [L88] double x = -0.0; [L89] CALL, EXPR round_double(x) VAL [\old(x)=4294967297] [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=4294967297, x=4294967297] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L29] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; VAL [\old(x)=4294967297, \result=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L89] RET, EXPR round_double(x) VAL [round_double(x)=4294967297, x=4294967297] [L89] double res = round_double(x); [L92] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967297, res == -0.0 && __signbit_double(res) == 1=0, x=4294967297] [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L93] reach_error() VAL [res=4294967297, x=4294967297] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 6 SDslu, 43 SDs, 0 SdLazy, 48 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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...