/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:20,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:20,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:20,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:20,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:21,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:21,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:21,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:21,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:21,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:21,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:21,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:21,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:21,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:21,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:21,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:21,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:21,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:21,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:21,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:21,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:21,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:21,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:21,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:21,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:21,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:21,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:21,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:21,067 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 [2020-08-22 16:17:21,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:21,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:21,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:21,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:21,109 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:21,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:21,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:21,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:21,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:21,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:21,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:21,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:21,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:21,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:21,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:21,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:21,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:21,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:21,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:21,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:21,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:21,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:21,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:21,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:21,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:21,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:21,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:21,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:21,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:21,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:21,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:21,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:21,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:21,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:21,397 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:21,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-08-22 16:17:21,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ca6b15a/cdb9ee1d16474d008c788d731742bc9b/FLAGc385f4638 [2020-08-22 16:17:21,897 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:21,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-08-22 16:17:21,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ca6b15a/cdb9ee1d16474d008c788d731742bc9b/FLAGc385f4638 [2020-08-22 16:17:22,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ca6b15a/cdb9ee1d16474d008c788d731742bc9b [2020-08-22 16:17:22,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:22,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:22,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:22,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:22,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:22,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22, skipping insertion in model container [2020-08-22 16:17:22,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:22,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:22,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:22,505 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:22,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:22,561 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:22,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22 WrapperNode [2020-08-22 16:17:22,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:22,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:22,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:22,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:22,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (1/1) ... [2020-08-22 16:17:22,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:22,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:22,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:22,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:22,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (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 [2020-08-22 16:17:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-22 16:17:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-08-22 16:17:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 16:17:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 16:17:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-22 16:17:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-08-22 16:17:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 16:17:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:23,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:23,054 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:17:23,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:23 BoogieIcfgContainer [2020-08-22 16:17:23,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:23,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:23,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:23,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:23,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:22" (1/3) ... [2020-08-22 16:17:23,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715b5bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:23, skipping insertion in model container [2020-08-22 16:17:23,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:22" (2/3) ... [2020-08-22 16:17:23,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715b5bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:23, skipping insertion in model container [2020-08-22 16:17:23,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:23" (3/3) ... [2020-08-22 16:17:23,069 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-08-22 16:17:23,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:23,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:23,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:23,131 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:23,131 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:23,131 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:23,131 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:23,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:23,132 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:23,132 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:23,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-22 16:17:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:17:23,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:23,160 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] [2020-08-22 16:17:23,161 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-08-22 16:17:23,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:23,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113673320] [2020-08-22 16:17:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:17:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:23,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113673320] [2020-08-22 16:17:23,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:23,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:23,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138691185] [2020-08-22 16:17:23,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:23,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:23,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:23,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:23,451 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-22 16:17:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:23,663 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-22 16:17:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:23,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-22 16:17:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:23,675 INFO L225 Difference]: With dead ends: 79 [2020-08-22 16:17:23,676 INFO L226 Difference]: Without dead ends: 40 [2020-08-22 16:17:23,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:17:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-22 16:17:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-22 16:17:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 16:17:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-22 16:17:23,728 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-22 16:17:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:23,729 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-22 16:17:23,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-22 16:17:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 16:17:23,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:23,732 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] [2020-08-22 16:17:23,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:23,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-08-22 16:17:23,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:23,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026535638] [2020-08-22 16:17:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:17:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:24,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026535638] [2020-08-22 16:17:24,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:24,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:17:24,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16891675] [2020-08-22 16:17:24,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:17:24,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:24,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:17:24,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:17:24,023 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-22 16:17:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:24,281 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-22 16:17:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:17:24,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-22 16:17:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:24,285 INFO L225 Difference]: With dead ends: 59 [2020-08-22 16:17:24,285 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 16:17:24,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:17:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 16:17:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-22 16:17:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:17:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 16:17:24,299 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-22 16:17:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:24,300 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 16:17:24,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:17:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 16:17:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:17:24,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:24,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:24,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:24,302 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:24,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-08-22 16:17:24,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:24,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927650782] [2020-08-22 16:17:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:24,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:17:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:24,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927650782] [2020-08-22 16:17:24,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:24,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:17:24,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586310467] [2020-08-22 16:17:24,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:17:24,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:24,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:17:24,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:17:24,470 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-22 16:17:24,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:24,671 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-22 16:17:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:17:24,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-22 16:17:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:24,674 INFO L225 Difference]: With dead ends: 63 [2020-08-22 16:17:24,674 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:17:24,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:17:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:17:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-22 16:17:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:17:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 16:17:24,685 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-22 16:17:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:24,685 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 16:17:24,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:17:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 16:17:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:17:24,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:24,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:24,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:17:24,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:24,688 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-08-22 16:17:24,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:24,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101349446] [2020-08-22 16:17:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:24,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:24,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:24,743 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:24,744 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:24,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:17:24,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:24 BoogieIcfgContainer [2020-08-22 16:17:24,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:24,779 INFO L168 Benchmark]: Toolchain (without parser) took 2494.43 ms. Allocated memory was 148.4 MB in the beginning and 232.8 MB in the end (delta: 84.4 MB). Free memory was 103.4 MB in the beginning and 132.8 MB in the end (delta: -29.4 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:24,780 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:24,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.60 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 91.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:24,782 INFO L168 Benchmark]: Boogie Preprocessor took 122.12 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 181.9 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:24,783 INFO L168 Benchmark]: RCFGBuilder took 375.01 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 161.3 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:24,784 INFO L168 Benchmark]: TraceAbstraction took 1714.66 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 160.7 MB in the beginning and 132.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:24,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.60 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 91.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.12 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 181.9 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.01 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 161.3 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1714.66 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 160.7 MB in the beginning and 132.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4293918723, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918723] [L24] __uint32_t msw, lsw; VAL [\old(x)=4293918723, x=4293918723] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918723, lsw=1, msw=4293918721, x=4293918723] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918723, lsw=1, msw=4293918721, x=4293918723] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918723, lsw=1, msw=4293918721, x=4293918723] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=4293918723, \result=0, lsw=1, msw=4293918721, x=4293918723] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918723, \old(y)=0, __fpclassify_double(x)=0, x=4293918723, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=4293918723, \old(y)=0, \result=0, x=4293918723, y=0] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4293918723, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4293918723, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4293918723, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...