/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/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:02:20,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:02:20,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:02:20,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:02:20,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:02:20,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:02:20,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:02:20,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:02:20,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:02:20,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:02:20,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:02:20,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:02:20,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:02:20,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:02:20,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:02:20,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:02:20,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:02:20,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:02:20,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:02:20,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:02:20,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:02:20,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:02:20,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:02:20,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:02:20,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:02:20,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:02:20,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:02:20,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:02:20,559 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 17:02:20,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:02:20,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:02:20,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:02:20,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:02:20,595 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:02:20,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:02:20,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:02:20,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:02:20,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:02:20,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:02:20,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:02:20,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:02:20,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:02:20,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:02:20,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:02:20,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:02:20,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:02:20,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:02:20,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:02:20,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:02:20,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:02:20,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:02:20,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:02:20,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:02:20,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:02:20,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:02:20,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:02:20,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:02:20,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:02:20,604 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 17:02:20,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:02:20,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:02:20,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:02:20,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:02:20,946 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:02:20,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-08-18 17:02:21,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5956b5d42/98879faf214d44af83b5cdf9f757d744/FLAGc61771123 [2020-08-18 17:02:21,463 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:02:21,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-08-18 17:02:21,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5956b5d42/98879faf214d44af83b5cdf9f757d744/FLAGc61771123 [2020-08-18 17:02:21,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5956b5d42/98879faf214d44af83b5cdf9f757d744 [2020-08-18 17:02:21,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:02:21,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:02:21,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:21,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:02:21,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:02:21,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:21" (1/1) ... [2020-08-18 17:02:21,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:21, skipping insertion in model container [2020-08-18 17:02:21,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:21" (1/1) ... [2020-08-18 17:02:21,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:02:21,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:02:22,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:22,104 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:02:22,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:22,240 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:02:22,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22 WrapperNode [2020-08-18 17:02:22,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:22,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:02:22,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:02:22,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:02:22,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (1/1) ... [2020-08-18 17:02:22,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:02:22,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:02:22,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:02:22,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:02:22,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (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 17:02:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:02:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:02:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-08-18 17:02:22,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-08-18 17:02:22,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:02:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:02:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-08-18 17:02:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:02:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:02:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:02:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:02:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:02:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:02:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-08-18 17:02:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:02:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:02:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:02:22,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:02:22,755 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 17:02:22,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:22 BoogieIcfgContainer [2020-08-18 17:02:22,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:02:22,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:02:22,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:02:22,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:02:22,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:02:21" (1/3) ... [2020-08-18 17:02:22,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4138ec10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:22, skipping insertion in model container [2020-08-18 17:02:22,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:22" (2/3) ... [2020-08-18 17:02:22,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4138ec10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:22, skipping insertion in model container [2020-08-18 17:02:22,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:22" (3/3) ... [2020-08-18 17:02:22,771 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-08-18 17:02:22,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:02:22,808 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:02:22,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:02:22,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:02:22,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:02:22,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:02:22,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:02:22,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:02:22,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:02:22,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:02:22,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:02:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-08-18 17:02:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 17:02:22,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:22,874 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] [2020-08-18 17:02:22,874 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:22,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2020-08-18 17:02:22,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:22,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110629438] [2020-08-18 17:02:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:02:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 17:02:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,108 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 17:02:23,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110629438] [2020-08-18 17:02:23,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:02:23,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:02:23,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364867912] [2020-08-18 17:02:23,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:02:23,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:02:23,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:02:23,142 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-08-18 17:02:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:23,435 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2020-08-18 17:02:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:02:23,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 17:02:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:23,451 INFO L225 Difference]: With dead ends: 88 [2020-08-18 17:02:23,452 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 17:02:23,457 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 [2020-08-18 17:02:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 17:02:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 17:02:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 17:02:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-08-18 17:02:23,504 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2020-08-18 17:02:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:23,505 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-08-18 17:02:23,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:02:23,505 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-08-18 17:02:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 17:02:23,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:23,508 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] [2020-08-18 17:02:23,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:02:23,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2020-08-18 17:02:23,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:23,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816302000] [2020-08-18 17:02:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:02:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:02:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:23,683 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 17:02:23,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816302000] [2020-08-18 17:02:23,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:02:23,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:02:23,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485476222] [2020-08-18 17:02:23,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:02:23,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:23,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:02:23,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:02:23,687 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-08-18 17:02:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:23,890 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-08-18 17:02:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:02:23,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 17:02:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:23,893 INFO L225 Difference]: With dead ends: 47 [2020-08-18 17:02:23,893 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 17:02:23,894 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 [2020-08-18 17:02:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 17:02:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 17:02:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 17:02:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-08-18 17:02:23,904 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2020-08-18 17:02:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:23,906 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-08-18 17:02:23,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:02:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-08-18 17:02:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-18 17:02:23,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:23,908 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] [2020-08-18 17:02:23,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:02:23,909 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:23,909 INFO L82 PathProgramCache]: Analyzing trace with hash -425385736, now seen corresponding path program 1 times [2020-08-18 17:02:23,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:23,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757571435] [2020-08-18 17:02:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:02:23,984 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:02:23,985 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:02:23,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:02:24,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:02:24 BoogieIcfgContainer [2020-08-18 17:02:24,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:02:24,016 INFO L168 Benchmark]: Toolchain (without parser) took 2162.41 ms. Allocated memory was 147.8 MB in the beginning and 234.4 MB in the end (delta: 86.5 MB). Free memory was 104.0 MB in the beginning and 184.1 MB in the end (delta: -80.1 MB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:24,016 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 17:02:24,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.86 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 183.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:24,019 INFO L168 Benchmark]: Boogie Preprocessor took 61.15 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 180.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:24,024 INFO L168 Benchmark]: RCFGBuilder took 457.40 ms. Allocated memory is still 204.5 MB. Free memory was 180.2 MB in the beginning and 155.4 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:24,027 INFO L168 Benchmark]: TraceAbstraction took 1251.06 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 154.8 MB in the beginning and 184.1 MB in the end (delta: -29.3 MB). Peak memory consumption was 605.2 kB. Max. memory is 7.1 GB. [2020-08-18 17:02:24,038 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.86 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 183.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.15 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 180.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.40 ms. Allocated memory is still 204.5 MB. Free memory was 180.2 MB in the beginning and 155.4 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1251.06 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 154.8 MB in the beginning and 184.1 MB in the end (delta: -29.3 MB). Peak memory consumption was 605.2 kB. 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; [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L82] CALL, EXPR modf_float(x, &iptr) [L14] __int32_t i0, j0; [L15] __uint32_t i; [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 [L22] COND TRUE j0 < 23 [L23] COND TRUE j0 < 0 [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; [L82] RET, EXPR modf_float(x, &iptr) [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L85] CALL, EXPR isnan_float(iptr) [L73] return x != x; [L85] RET, EXPR isnan_float(iptr) [L85] isnan_float(iptr) && !isnan_float(res) [L85] CALL, EXPR isnan_float(res) [L73] return x != x; [L85] RET, EXPR isnan_float(res) [L85] isnan_float(iptr) && !isnan_float(res) [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, 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, 0.2s 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...