/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:12:20,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:12:20,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:12:20,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:12:20,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:12:20,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:12:20,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:12:20,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:12:20,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:12:20,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:12:20,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:12:20,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:12:20,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:12:20,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:12:20,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:12:20,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:12:20,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:12:20,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:12:20,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:12:20,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:12:20,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:12:20,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:12:20,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:12:20,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:12:20,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:12:20,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:12:20,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:12:20,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:12:20,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:12:20,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:12:20,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:12:20,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:12:20,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:12:20,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:12:20,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:12:20,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:12:20,450 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 [2020-07-19 21:12:20,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:12:20,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:12:20,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:12:20,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:12:20,466 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:12:20,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:12:20,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:12:20,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:12:20,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:12:20,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:12:20,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:12:20,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:12:20,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:12:20,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:12:20,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:12:20,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:12:20,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:12:20,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:12:20,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:12:20,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:12:20,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:12:20,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:12:20,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:12:20,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:12:20,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:12:20,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:12:20,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:12:20,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:12:20,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:12:20,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:12:20,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:12:20,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:12:20,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:12:20,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:12:20,777 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:12:20,778 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-07-19 21:12:20,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d68080b4/64863a76755f417dad85d8cc4265fd5f/FLAG7087b7087 [2020-07-19 21:12:21,318 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:12:21,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-07-19 21:12:21,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d68080b4/64863a76755f417dad85d8cc4265fd5f/FLAG7087b7087 [2020-07-19 21:12:21,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d68080b4/64863a76755f417dad85d8cc4265fd5f [2020-07-19 21:12:21,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:12:21,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:12:21,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:12:21,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:12:21,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:12:21,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:21" (1/1) ... [2020-07-19 21:12:21,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e3ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:21, skipping insertion in model container [2020-07-19 21:12:21,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:21" (1/1) ... [2020-07-19 21:12:21,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:12:21,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:12:21,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:12:21,959 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:12:21,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:12:22,092 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:12:22,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22 WrapperNode [2020-07-19 21:12:22,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:12:22,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:12:22,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:12:22,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:12:22,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (1/1) ... [2020-07-19 21:12:22,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:12:22,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:12:22,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:12:22,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:12:22,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (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 [2020-07-19 21:12:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:12:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:12:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-07-19 21:12:22,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-19 21:12:22,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:12:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:12:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-07-19 21:12:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:12:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 21:12:22,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:12:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:12:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:12:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 21:12:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-19 21:12:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:12:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:12:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:12:22,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:12:22,638 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-19 21:12:22,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:22 BoogieIcfgContainer [2020-07-19 21:12:22,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:12:22,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:12:22,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:12:22,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:12:22,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:12:21" (1/3) ... [2020-07-19 21:12:22,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7dd2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:22, skipping insertion in model container [2020-07-19 21:12:22,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:22" (2/3) ... [2020-07-19 21:12:22,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7dd2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:22, skipping insertion in model container [2020-07-19 21:12:22,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:22" (3/3) ... [2020-07-19 21:12:22,652 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-07-19 21:12:22,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:12:22,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:12:22,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:12:22,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:12:22,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:12:22,713 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:12:22,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:12:22,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:12:22,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:12:22,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:12:22,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:12:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-07-19 21:12:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 21:12:22,738 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:12:22,739 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] [2020-07-19 21:12:22,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:12:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:12:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2020-07-19 21:12:22,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:12:22,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170189552] [2020-07-19 21:12:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75e05594 [2020-07-19 21:12:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:12:23,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170189552] [2020-07-19 21:12:23,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:12:23,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:12:23,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945705283] [2020-07-19 21:12:23,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:12:23,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:12:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:12:23,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:12:23,063 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-07-19 21:12:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:12:23,345 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2020-07-19 21:12:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:12:23,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 21:12:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:12:23,358 INFO L225 Difference]: With dead ends: 88 [2020-07-19 21:12:23,358 INFO L226 Difference]: Without dead ends: 44 [2020-07-19 21:12:23,366 INFO L675 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 [2020-07-19 21:12:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-19 21:12:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-19 21:12:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-19 21:12:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-19 21:12:23,420 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2020-07-19 21:12:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:12:23,421 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-19 21:12:23,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:12:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-19 21:12:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:12:23,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:12:23,424 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, 1] [2020-07-19 21:12:23,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:12:23,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:12:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:12:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2020-07-19 21:12:23,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:12:23,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214969076] [2020-07-19 21:12:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75e05594 [2020-07-19 21:12:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:12:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:12:23,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214969076] [2020-07-19 21:12:23,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:12:23,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:12:23,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560232155] [2020-07-19 21:12:23,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:12:23,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:12:23,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:12:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:12:23,593 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-07-19 21:12:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:12:23,812 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-07-19 21:12:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:12:23,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-19 21:12:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:12:23,814 INFO L225 Difference]: With dead ends: 47 [2020-07-19 21:12:23,814 INFO L226 Difference]: Without dead ends: 44 [2020-07-19 21:12:23,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:12:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-19 21:12:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-19 21:12:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-19 21:12:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-07-19 21:12:23,825 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2020-07-19 21:12:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:12:23,827 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-07-19 21:12:23,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:12:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-07-19 21:12:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-19 21:12:23,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:12:23,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2020-07-19 21:12:23,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:12:23,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:12:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:12:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash -425385736, now seen corresponding path program 1 times [2020-07-19 21:12:23,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:12:23,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434876586] [2020-07-19 21:12:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75e05594 [2020-07-19 21:12:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:12:23,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:12:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:12:23,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:12:23,984 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:12:23,987 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:12:23,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:12:24,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:12:24 BoogieIcfgContainer [2020-07-19 21:12:24,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:12:24,062 INFO L168 Benchmark]: Toolchain (without parser) took 2359.84 ms. Allocated memory was 137.9 MB in the beginning and 234.9 MB in the end (delta: 97.0 MB). Free memory was 102.5 MB in the beginning and 184.0 MB in the end (delta: -81.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:12:24,065 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 21:12:24,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.10 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 181.9 MB in the end (delta: -79.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:12:24,069 INFO L168 Benchmark]: Boogie Preprocessor took 51.84 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:12:24,070 INFO L168 Benchmark]: RCFGBuilder took 494.20 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 154.1 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:12:24,072 INFO L168 Benchmark]: TraceAbstraction took 1415.52 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 153.4 MB in the beginning and 184.0 MB in the end (delta: -30.6 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:12:24,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.10 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 181.9 MB in the end (delta: -79.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.84 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.20 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 154.1 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1415.52 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 153.4 MB in the beginning and 184.0 MB in the end (delta: -30.6 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=4294967301, one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] float iptr; VAL [iptr={3:0}, one_modf=1] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=4294967298, iptr={3:0}, one_modf=1] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=4294967298, iptr={3:0}, iptr={3:0}, one_modf=1, x=4294967298] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=4294967298, i0=0, iptr={3:0}, iptr={3:0}, one_modf=1, x=4294967298] [L22] COND TRUE j0 < 23 VAL [\old(x)=4294967298, i0=0, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=4294967298] [L23] COND TRUE j0 < 0 VAL [\old(x)=4294967298, i0=0, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=4294967298] [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; VAL [\old(x)=4294967298, \result=4294967298, i0=0, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=4294967298] [L82] RET, EXPR modf_float(x, &iptr) VAL [iptr={3:0}, modf_float(x, &iptr)=4294967298, one_modf=1, x=4294967298] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) VAL [\read(iptr)=4294967304, iptr={3:0}, one_modf=1, res=4294967298, x=4294967298] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=4294967304, one_modf=1] [L73] return x != x; VAL [\old(x)=4294967304, \result=1, one_modf=1, x=4294967304] [L85] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=4294967304, iptr={3:0}, isnan_float(iptr)=1, one_modf=1, res=4294967298, x=4294967298] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967304, iptr={3:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=4294967298, x=4294967298] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967298, one_modf=1] [L73] return x != x; VAL [\old(x)=4294967298, \result=0, one_modf=1, x=4294967298] [L85] RET, EXPR isnan_float(res) VAL [\read(iptr)=4294967304, iptr={3:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967298, x=4294967298] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967304, iptr={3:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967298, x=4294967298] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={3:0}, one_modf=1, res=4294967298, x=4294967298] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 35 SDs, 0 SdLazy, 146 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...