/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:39:53,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:39:53,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:39:53,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:39:53,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:39:53,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:39:53,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:39:53,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:39:53,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:39:53,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:39:53,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:39:53,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:39:53,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:39:53,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:39:53,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:39:53,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:39:53,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:39:53,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:39:53,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:39:53,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:39:53,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:39:53,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:39:53,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:39:53,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:39:53,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:39:53,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:39:53,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:39:53,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:39:53,724 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 [2020-07-21 10:39:53,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:39:53,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:39:53,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:39:53,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:39:53,741 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:39:53,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:39:53,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:39:53,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:39:53,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:39:53,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:39:53,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:39:53,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:39:53,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:39:53,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:39:53,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:39:53,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:39:53,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:39:53,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:39:53,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:39:53,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:39:53,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:39:53,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:39:53,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:39:53,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:39:53,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:39:53,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:39:53,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:53,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:39:53,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:39:53,746 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 10:39:54,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:39:54,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:39:54,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:39:54,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:39:54,043 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:39:54,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 10:39:54,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ec88cf9/d72c5d80f02247beaf0c49bd5ad79b79/FLAGe048675eb [2020-07-21 10:39:54,589 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:39:54,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 10:39:54,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ec88cf9/d72c5d80f02247beaf0c49bd5ad79b79/FLAGe048675eb [2020-07-21 10:39:54,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ec88cf9/d72c5d80f02247beaf0c49bd5ad79b79 [2020-07-21 10:39:54,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:39:54,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:39:54,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:54,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:39:54,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:39:54,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:54" (1/1) ... [2020-07-21 10:39:54,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53aa3d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:54, skipping insertion in model container [2020-07-21 10:39:54,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:54" (1/1) ... [2020-07-21 10:39:54,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:39:54,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:39:55,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:55,229 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:39:55,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:55,394 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:39:55,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55 WrapperNode [2020-07-21 10:39:55,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:55,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:39:55,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:39:55,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:39:55,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (1/1) ... [2020-07-21 10:39:55,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:39:55,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:39:55,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:39:55,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:39:55,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (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 [2020-07-21 10:39:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:39:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:39:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 10:39:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 10:39:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 10:39:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:39:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:39:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 10:39:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 10:39:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 10:39:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:39:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:39:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:39:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:39:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:39:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:39:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 10:39:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:39:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:39:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 10:39:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:39:56,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:39:56,207 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 10:39:56,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:56 BoogieIcfgContainer [2020-07-21 10:39:56,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:39:56,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:39:56,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:39:56,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:39:56,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:54" (1/3) ... [2020-07-21 10:39:56,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4787de7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:56, skipping insertion in model container [2020-07-21 10:39:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:55" (2/3) ... [2020-07-21 10:39:56,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4787de7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:56, skipping insertion in model container [2020-07-21 10:39:56,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:56" (3/3) ... [2020-07-21 10:39:56,221 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-21 10:39:56,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:39:56,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:39:56,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:39:56,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:39:56,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:39:56,272 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:39:56,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:39:56,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:39:56,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:39:56,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:39:56,273 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:39:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 10:39:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 10:39:56,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:56,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:39:56,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:56,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-21 10:39:56,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:56,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23554618] [2020-07-21 10:39:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:39:56,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:39:56,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:39:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:39:56,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:39:56,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23554618] [2020-07-21 10:39:56,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:39:56,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:39:56,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384936751] [2020-07-21 10:39:56,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:39:56,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:39:56,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:39:56,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:39:56,516 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 10:39:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:39:56,550 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-21 10:39:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:39:56,551 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 10:39:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:39:56,563 INFO L225 Difference]: With dead ends: 139 [2020-07-21 10:39:56,563 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 10:39:56,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:39:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 10:39:56,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-21 10:39:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 10:39:56,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-21 10:39:56,616 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-21 10:39:56,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:39:56,617 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-21 10:39:56,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:39:56,617 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-21 10:39:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 10:39:56,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:56,619 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] [2020-07-21 10:39:56,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:56,833 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:56,834 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-21 10:39:56,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:56,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478469787] [2020-07-21 10:39:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:56,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:56,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:56,975 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:39:56,975 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:39:57,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:57,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:57 BoogieIcfgContainer [2020-07-21 10:39:57,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:39:57,244 INFO L168 Benchmark]: Toolchain (without parser) took 2297.43 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 103.3 MB in the beginning and 205.8 MB in the end (delta: -102.5 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:57,245 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 10:39:57,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.70 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.1 MB in the beginning and 178.8 MB in the end (delta: -75.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:57,247 INFO L168 Benchmark]: Boogie Preprocessor took 65.03 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:57,248 INFO L168 Benchmark]: RCFGBuilder took 751.69 ms. Allocated memory is still 203.4 MB. Free memory was 176.0 MB in the beginning and 139.1 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:57,249 INFO L168 Benchmark]: TraceAbstraction took 1028.64 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 138.5 MB in the beginning and 205.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:57,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.70 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.1 MB in the beginning and 178.8 MB in the end (delta: -75.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.03 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 751.69 ms. Allocated memory is still 203.4 MB. Free memory was 176.0 MB in the beginning and 139.1 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1028.64 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 138.5 MB in the beginning and 205.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=6, one_fmod=1, Zero_fmod={1145:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=3, Zero_fmod={1145:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, one_fmod=1, Zero_fmod={1145:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=3, one_fmod=1, x=0, y=3, Zero_fmod={1145:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=3, lx=11, ly=14, one_fmod=1, sx=4294967295, x=0, y=3, Zero_fmod={1145:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=3, hx=0, lx=11, ly=14, one_fmod=1, sx=4294967295, x=0, y=3, Zero_fmod={1145:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=6, one_fmod=1, x=0, y=3, Zero_fmod={1145:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=6, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=3, Zero_fmod={1145:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=6, x=0, y=3, Zero_fmod={1145:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 1 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...