/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:15:57,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:15:57,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:15:57,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:15:57,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:15:57,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:15:57,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:15:57,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:15:57,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:15:57,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:15:57,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:15:57,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:15:57,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:15:57,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:15:57,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:15:57,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:15:57,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:15:57,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:15:57,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:15:57,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:15:57,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:15:57,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:15:57,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:15:57,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:15:57,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 13:15:57,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:15:57,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:15:57,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:15:57,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:15:57,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:15:57,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:15:57,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:15:57,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:15:57,400 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:15:57,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:15:57,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:15:57,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:15:57,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:15:57,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:15:57,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:15:57,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:15:57,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:15:57,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:15:57,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:15:57,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:15:57,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:15:57,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:15:57,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:15:57,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:15:57,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:15:57,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:15:57,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:15:57,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:15:57,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:15:57,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:15:57,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:15:57,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:15:57,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:15:57,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:15:57,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:15:57,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:15:57,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:15:57,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:15:57,709 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:15:57,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-08-21 13:15:57,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec2c530e0/d96c884525344036b625e53c42064b7e/FLAG47fd5f469 [2020-08-21 13:15:58,238 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:15:58,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-08-21 13:15:58,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec2c530e0/d96c884525344036b625e53c42064b7e/FLAG47fd5f469 [2020-08-21 13:15:58,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec2c530e0/d96c884525344036b625e53c42064b7e [2020-08-21 13:15:58,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:15:58,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:15:58,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:15:58,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:15:58,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:15:58,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:15:58" (1/1) ... [2020-08-21 13:15:58,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40221ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:58, skipping insertion in model container [2020-08-21 13:15:58,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:15:58" (1/1) ... [2020-08-21 13:15:58,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:15:58,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:15:58,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:15:58,916 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:15:59,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:15:59,071 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:15:59,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59 WrapperNode [2020-08-21 13:15:59,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:15:59,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:15:59,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:15:59,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:15:59,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... [2020-08-21 13:15:59,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:15:59,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:15:59,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:15:59,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:15:59,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 13:15:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:15:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:15:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 13:15:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-21 13:15:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:15:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:15:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 13:15:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 13:15:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-21 13:15:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:15:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:15:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:15:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:15:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:15:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:15:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:15:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:15:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:15:59,706 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:15:59,706 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-21 13:15:59,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:15:59 BoogieIcfgContainer [2020-08-21 13:15:59,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:15:59,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:15:59,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:15:59,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:15:59,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:15:58" (1/3) ... [2020-08-21 13:15:59,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26449fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:15:59, skipping insertion in model container [2020-08-21 13:15:59,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:15:59" (2/3) ... [2020-08-21 13:15:59,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26449fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:15:59, skipping insertion in model container [2020-08-21 13:15:59,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:15:59" (3/3) ... [2020-08-21 13:15:59,722 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-08-21 13:15:59,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:15:59,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:15:59,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:15:59,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:15:59,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:15:59,777 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:15:59,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:15:59,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:15:59,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:15:59,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:15:59,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:15:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-08-21 13:15:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 13:15:59,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:59,803 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] [2020-08-21 13:15:59,804 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:59,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1131346129, now seen corresponding path program 1 times [2020-08-21 13:15:59,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:59,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796134017] [2020-08-21 13:15:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:16:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:00,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796134017] [2020-08-21 13:16:00,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:00,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:00,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082140666] [2020-08-21 13:16:00,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:00,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:00,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:00,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:00,123 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 4 states. [2020-08-21 13:16:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:00,417 INFO L93 Difference]: Finished difference Result 116 states and 172 transitions. [2020-08-21 13:16:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:16:00,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-08-21 13:16:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:00,432 INFO L225 Difference]: With dead ends: 116 [2020-08-21 13:16:00,432 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 13:16:00,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:16:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 13:16:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-21 13:16:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 13:16:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2020-08-21 13:16:00,482 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 20 [2020-08-21 13:16:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:00,482 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2020-08-21 13:16:00,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2020-08-21 13:16:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 13:16:00,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:00,484 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] [2020-08-21 13:16:00,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:00,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2124284734, now seen corresponding path program 1 times [2020-08-21 13:16:00,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:00,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123124860] [2020-08-21 13:16:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:00,530 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:00,531 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:00,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:00,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:00 BoogieIcfgContainer [2020-08-21 13:16:00,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:00,556 INFO L168 Benchmark]: Toolchain (without parser) took 1937.84 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.6 MB in the beginning and 97.1 MB in the end (delta: 7.5 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:00,557 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:16:00,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.4 MB in the beginning and 181.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:00,559 INFO L168 Benchmark]: Boogie Preprocessor took 64.83 ms. Allocated memory is still 204.5 MB. Free memory was 181.6 MB in the beginning and 179.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:00,560 INFO L168 Benchmark]: RCFGBuilder took 572.05 ms. Allocated memory is still 204.5 MB. Free memory was 179.6 MB in the beginning and 151.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:00,561 INFO L168 Benchmark]: TraceAbstraction took 839.25 ms. Allocated memory is still 204.5 MB. Free memory was 150.9 MB in the beginning and 97.1 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:00,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.4 MB in the beginning and 181.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.83 ms. Allocated memory is still 204.5 MB. Free memory was 181.6 MB in the beginning and 179.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 572.05 ms. Allocated memory is still 204.5 MB. Free memory was 179.6 MB in the beginning and 151.6 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 839.25 ms. Allocated memory is still 204.5 MB. Free memory was 150.9 MB in the beginning and 97.1 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 145]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L139] double x = 0.0 / 0.0; [L141] CALL, EXPR __ieee754_sqrt(x) [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; [L141] RET, EXPR __ieee754_sqrt(x) [L141] double res = __ieee754_sqrt(x); [L144] CALL, EXPR isnan_double(res) [L18] return x != x; [L144] RET, EXPR isnan_double(res) [L144] COND TRUE !isnan_double(res) [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 72 SDslu, 5 SDs, 0 SdLazy, 78 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 874 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...