/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:05:38,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:05:38,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:05:38,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:05:38,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:05:38,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:05:38,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:05:38,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:05:38,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:05:38,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:05:38,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:05:38,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:05:38,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:05:38,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:05:38,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:05:38,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:05:38,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:05:38,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:05:38,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:05:38,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:05:38,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:05:38,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:05:38,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:05:38,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:05:38,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:05:38,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:05:38,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:05:38,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:05:38,590 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 [2020-08-18 12:05:38,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:05:38,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:05:38,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:05:38,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:05:38,638 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:05:38,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:05:38,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:05:38,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:05:38,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:05:38,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:05:38,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:05:38,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:05:38,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:05:38,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:05:38,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:05:38,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:05:38,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:05:38,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:05:38,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:05:38,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:05:38,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:05:38,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:05:38,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:05:38,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:05:38,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:05:38,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:05:38,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:05:38,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:05:38,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:05:38,645 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:05:38,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:05:38,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:05:38,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:05:38,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:05:38,962 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:05:38,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-18 12:05:39,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4cf55d61/66ce87be2a9346ecb9068a170c2a2078/FLAG6b1f79f88 [2020-08-18 12:05:39,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:05:39,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-18 12:05:39,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4cf55d61/66ce87be2a9346ecb9068a170c2a2078/FLAG6b1f79f88 [2020-08-18 12:05:39,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4cf55d61/66ce87be2a9346ecb9068a170c2a2078 [2020-08-18 12:05:39,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:05:39,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:05:39,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:05:39,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:05:39,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:05:39,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:05:39" (1/1) ... [2020-08-18 12:05:39,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432f0dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:39, skipping insertion in model container [2020-08-18 12:05:39,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:05:39" (1/1) ... [2020-08-18 12:05:39,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:05:39,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:05:40,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:05:40,131 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:05:40,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:05:40,278 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:05:40,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40 WrapperNode [2020-08-18 12:05:40,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:05:40,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:05:40,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:05:40,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:05:40,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (1/1) ... [2020-08-18 12:05:40,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:05:40,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:05:40,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:05:40,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:05:40,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (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 [2020-08-18 12:05:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:05:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:05:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 12:05:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 12:05:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:05:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:05:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 12:05:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 12:05:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:05:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 12:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 12:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:05:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:05:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:05:40,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:05:40,736 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 12:05:40,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:05:40 BoogieIcfgContainer [2020-08-18 12:05:40,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:05:40,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:05:40,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:05:40,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:05:40,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:05:39" (1/3) ... [2020-08-18 12:05:40,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44be0b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:05:40, skipping insertion in model container [2020-08-18 12:05:40,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:05:40" (2/3) ... [2020-08-18 12:05:40,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44be0b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:05:40, skipping insertion in model container [2020-08-18 12:05:40,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:05:40" (3/3) ... [2020-08-18 12:05:40,751 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-18 12:05:40,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:05:40,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:05:40,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:05:40,829 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:05:40,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:05:40,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:05:40,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:05:40,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:05:40,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:05:40,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:05:40,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:05:40,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-18 12:05:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:05:40,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:05:40,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:05:40,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:05:40,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:05:40,869 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-18 12:05:40,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:05:40,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295563982] [2020-08-18 12:05:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:05:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:05:41,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:05:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:05:41,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:05:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:05:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:05:41,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295563982] [2020-08-18 12:05:41,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:05:41,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:05:41,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120461054] [2020-08-18 12:05:41,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:05:41,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:05:41,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:05:41,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:05:41,159 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-18 12:05:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:05:41,392 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-18 12:05:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:05:41,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-18 12:05:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:05:41,407 INFO L225 Difference]: With dead ends: 76 [2020-08-18 12:05:41,407 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 12:05:41,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:05:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 12:05:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 12:05:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 12:05:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-18 12:05:41,463 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-18 12:05:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:05:41,464 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-18 12:05:41,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:05:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-18 12:05:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 12:05:41,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:05:41,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:05:41,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:05:41,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:05:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:05:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-18 12:05:41,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:05:41,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309173279] [2020-08-18 12:05:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:05:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:05:41,518 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:05:41,519 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:05:41,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:05:41,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:05:41 BoogieIcfgContainer [2020-08-18 12:05:41,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:05:41,547 INFO L168 Benchmark]: Toolchain (without parser) took 1715.03 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 111.8 MB in the end (delta: -8.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:41,548 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:05:41,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.57 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 181.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:41,550 INFO L168 Benchmark]: Boogie Preprocessor took 53.92 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 179.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:41,551 INFO L168 Benchmark]: RCFGBuilder took 409.05 ms. Allocated memory is still 203.4 MB. Free memory was 179.0 MB in the beginning and 157.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:41,551 INFO L168 Benchmark]: TraceAbstraction took 799.71 ms. Allocated memory is still 203.4 MB. Free memory was 156.6 MB in the beginning and 111.8 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:05:41,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 447.57 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 181.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.92 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 179.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.05 ms. Allocated memory is still 203.4 MB. Free memory was 179.0 MB in the beginning and 157.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 799.71 ms. Allocated memory is still 203.4 MB. Free memory was 156.6 MB in the beginning and 111.8 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...