/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_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:22,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:22,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:22,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 21:57:22,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:22,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:22,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:22,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:22,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:22,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:22,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:22,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:22,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:22,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:22,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:22,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:22,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:22,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:22,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:22,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:22,262 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 [2020-11-06 21:57:22,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:22,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:22,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:22,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:22,294 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:22,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:22,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:22,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:22,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:22,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:22,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:22,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:22,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:22,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:22,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:22,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:22,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:22,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:22,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:22,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:22,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:22,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:22,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:22,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:22,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:22,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:22,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:22,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:22,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:22,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:22,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:22,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:22,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:22,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:22,716 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:22,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-11-06 21:57:22,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2feff2f51/573ded72b8b9435f88725b73c10cc428/FLAGc0b930f21 [2020-11-06 21:57:23,470 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:23,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-11-06 21:57:23,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2feff2f51/573ded72b8b9435f88725b73c10cc428/FLAGc0b930f21 [2020-11-06 21:57:23,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2feff2f51/573ded72b8b9435f88725b73c10cc428 [2020-11-06 21:57:23,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:23,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:23,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:23,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:23,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:23,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:23" (1/1) ... [2020-11-06 21:57:23,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1037bafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:23, skipping insertion in model container [2020-11-06 21:57:23,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:23" (1/1) ... [2020-11-06 21:57:23,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:23,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:24,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:24,052 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:24,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:24,097 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:24,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24 WrapperNode [2020-11-06 21:57:24,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:24,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:24,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:24,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:24,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:24,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:24,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:24,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:24,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:24,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-06 21:57:24,229 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-11-06 21:57:24,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-06 21:57:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-11-06 21:57:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:24,860 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:24,860 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-06 21:57:24,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:24 BoogieIcfgContainer [2020-11-06 21:57:24,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:24,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:24,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:24,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:24,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:23" (1/3) ... [2020-11-06 21:57:24,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5363c54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:24, skipping insertion in model container [2020-11-06 21:57:24,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (2/3) ... [2020-11-06 21:57:24,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5363c54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:24, skipping insertion in model container [2020-11-06 21:57:24,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:24" (3/3) ... [2020-11-06 21:57:24,873 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-11-06 21:57:24,891 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:24,895 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:24,908 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:24,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:24,938 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:24,938 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:24,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:24,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:24,938 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:24,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:24,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-06 21:57:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 21:57:24,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:24,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:57:24,967 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 427203542, now seen corresponding path program 1 times [2020-11-06 21:57:24,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:24,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23109514] [2020-11-06 21:57:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:57:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:25,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23109514] [2020-11-06 21:57:25,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:25,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:25,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229868185] [2020-11-06 21:57:25,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:25,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:25,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:25,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:25,312 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-11-06 21:57:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:25,489 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2020-11-06 21:57:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:25,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-06 21:57:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:25,501 INFO L225 Difference]: With dead ends: 71 [2020-11-06 21:57:25,502 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 21:57:25,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:57:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 21:57:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-06 21:57:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 21:57:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-11-06 21:57:25,556 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-11-06 21:57:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:25,556 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-11-06 21:57:25,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-11-06 21:57:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 21:57:25,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:25,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:57:25,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:25,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash 415878468, now seen corresponding path program 1 times [2020-11-06 21:57:25,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:25,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666217041] [2020-11-06 21:57:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:25,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:25,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:25,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:25,758 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:25,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:25,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:25 BoogieIcfgContainer [2020-11-06 21:57:25,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:25,810 INFO L168 Benchmark]: Toolchain (without parser) took 1996.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 76.3 MB in the end (delta: 50.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:25,811 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.8 MB in the end (delta: 79.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:25,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.33 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:25,813 INFO L168 Benchmark]: Boogie Preprocessor took 48.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:25,814 INFO L168 Benchmark]: RCFGBuilder took 714.01 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 126.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:25,815 INFO L168 Benchmark]: TraceAbstraction took 942.55 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 76.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:25,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.8 MB in the end (delta: 79.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.33 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 714.01 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 126.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 942.55 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 76.3 MB in the end (delta: 49.8 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: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L72] 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=13, msw=-2, signbit=-1, x=4294967296] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=13, msw=-2, signbit=-1, x=4294967296] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=13, 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=13, msw=-2, signbit=-1, x=4294967296] [L72] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967299, x=4294967296] [L72] double res = trunc_double(x); [L75] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967299] [L17] return x != x; VAL [\old(x)=4294967299, \result=0, x=4294967299] [L75] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967299, x=4294967296] [L75] COND TRUE !isnan_double(res) [L76] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1071.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 10 SDslu, 27 SDs, 0 SdLazy, 37 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 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...