/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:16:20,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:20,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:21,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:21,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:21,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:21,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:21,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:21,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:21,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:21,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:21,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:21,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:21,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:21,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:21,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:21,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:21,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:21,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:21,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:21,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:21,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:21,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:21,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:21,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 13:16:21,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:16:21,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:16:21,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:16:21,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:16:21,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:16:21,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:16:21,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:16:21,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:16:21,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:21,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:21,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:21,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:16:21,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:21,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:21,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:21,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:21,118 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:21,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:21,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:21,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:21,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:21,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:21,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:21,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:21,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:21,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:21,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:21,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:21,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:21,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:21,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:21,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:21,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:21,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:21,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:21,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:21,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:21,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:21,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:21,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:21,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:21,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:16:21,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:21,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:21,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:21,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:21,478 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:21,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-08-21 13:16:21,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecb6591c7/bc519402105543d78103606fdbffc9f4/FLAG064c38dc5 [2020-08-21 13:16:22,037 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:22,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-08-21 13:16:22,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecb6591c7/bc519402105543d78103606fdbffc9f4/FLAG064c38dc5 [2020-08-21 13:16:22,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecb6591c7/bc519402105543d78103606fdbffc9f4 [2020-08-21 13:16:22,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:22,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:22,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:22,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:22,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:22,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31653048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22, skipping insertion in model container [2020-08-21 13:16:22,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:22,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:22,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:22,691 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:22,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:22,819 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:22,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22 WrapperNode [2020-08-21 13:16:22,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:22,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:22,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:22,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:22,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (1/1) ... [2020-08-21 13:16:22,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:22,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:22,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:22,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:22,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (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 [2020-08-21 13:16:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-08-21 13:16:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-08-21 13:16:22,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 13:16:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-08-21 13:16:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:16:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:23,227 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:23,228 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 13:16:23,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:23 BoogieIcfgContainer [2020-08-21 13:16:23,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:23,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:23,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:23,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:23,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:22" (1/3) ... [2020-08-21 13:16:23,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8bbc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:23, skipping insertion in model container [2020-08-21 13:16:23,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:22" (2/3) ... [2020-08-21 13:16:23,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8bbc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:23, skipping insertion in model container [2020-08-21 13:16:23,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:23" (3/3) ... [2020-08-21 13:16:23,243 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-08-21 13:16:23,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:23,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:23,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:23,309 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:23,310 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:23,310 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:23,310 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:23,310 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:23,310 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:23,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:23,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-08-21 13:16:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 13:16:23,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:23,342 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] [2020-08-21 13:16:23,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1361541252, now seen corresponding path program 1 times [2020-08-21 13:16:23,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:23,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064440051] [2020-08-21 13:16:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:16:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:23,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064440051] [2020-08-21 13:16:23,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:23,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:23,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557655918] [2020-08-21 13:16:23,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:23,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:23,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:23,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:23,640 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-08-21 13:16:23,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:23,917 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2020-08-21 13:16:23,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:16:23,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-21 13:16:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:23,931 INFO L225 Difference]: With dead ends: 70 [2020-08-21 13:16:23,932 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 13:16:23,936 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 [2020-08-21 13:16:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 13:16:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-21 13:16:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 13:16:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-08-21 13:16:23,982 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2020-08-21 13:16:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:23,983 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-08-21 13:16:23,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-08-21 13:16:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 13:16:23,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:23,985 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] [2020-08-21 13:16:23,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:23,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:23,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1541897397, now seen corresponding path program 1 times [2020-08-21 13:16:23,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:23,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854517483] [2020-08-21 13:16:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:24,060 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:24,061 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:24,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:24,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:24 BoogieIcfgContainer [2020-08-21 13:16:24,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:24,087 INFO L168 Benchmark]: Toolchain (without parser) took 1644.77 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.3 MB in the beginning and 116.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:24,088 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 13:16:24,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.16 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 181.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:24,090 INFO L168 Benchmark]: Boogie Preprocessor took 44.00 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:24,091 INFO L168 Benchmark]: RCFGBuilder took 368.33 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 160.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:24,092 INFO L168 Benchmark]: TraceAbstraction took 850.19 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 116.0 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:24,096 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 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.16 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 181.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.00 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.33 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 160.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 850.19 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 116.0 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L66] float x = 0.0f / 0.0f; [L67] CALL, EXPR floor_float(x) [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f [L24] COND FALSE !(j0 < 23) [L44] COND TRUE !((ix) < 0x7f800000L) [L45] return x + x; [L67] RET, EXPR floor_float(x) [L67] float res = floor_float(x); [L70] CALL, EXPR isnan_float(res) [L58] return x != x; [L70] RET, EXPR isnan_float(res) [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 38 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 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...