/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:50:43,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:50:43,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:50:43,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:50:43,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:50:43,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:50:43,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:50:43,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:50:43,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:50:43,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:50:43,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:50:43,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:50:43,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:50:43,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:50:43,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:50:43,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:50:43,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:50:43,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:50:43,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:50:43,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:50:43,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:50:43,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:50:43,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:50:43,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:50:43,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:50:43,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:50:43,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:50:43,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:50:43,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:50:43,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:50:43,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:50:43,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:50:43,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:50:43,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:50:43,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:50:43,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:50:43,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:50:43,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:50:43,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:50:43,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:50:43,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:50:43,603 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 17:50:43,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:50:43,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:50:43,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:50:43,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:50:43,645 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:50:43,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:50:43,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:50:43,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:50:43,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:50:43,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:50:43,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:50:43,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:50:43,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:50:43,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:50:43,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:50:43,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:50:43,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:50:43,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:50:43,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:50:43,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:50:43,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:50:43,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:50:43,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:50:43,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:50:43,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:50:43,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:50:43,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:50:43,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:50:43,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:50:43,651 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:50:43,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:50:44,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:50:44,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:50:44,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:50:44,009 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:50:44,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-08-18 17:50:44,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5911ee238/e85f3b90206a4de98bb485217bead741/FLAGf63645888 [2020-08-18 17:50:44,521 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:50:44,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-08-18 17:50:44,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5911ee238/e85f3b90206a4de98bb485217bead741/FLAGf63645888 [2020-08-18 17:50:44,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5911ee238/e85f3b90206a4de98bb485217bead741 [2020-08-18 17:50:44,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:50:44,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:50:44,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:44,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:50:44,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:50:44,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:44" (1/1) ... [2020-08-18 17:50:44,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c752f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:44, skipping insertion in model container [2020-08-18 17:50:44,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:44" (1/1) ... [2020-08-18 17:50:44,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:50:44,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:50:45,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:45,111 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:50:45,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:45,161 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:50:45,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45 WrapperNode [2020-08-18 17:50:45,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:45,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:50:45,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:50:45,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:50:45,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (1/1) ... [2020-08-18 17:50:45,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:50:45,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:50:45,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:50:45,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:50:45,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (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 17:50:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:50:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:50:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-18 17:50:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-08-18 17:50:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-18 17:50:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:50:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:50:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-18 17:50:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:50:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:50:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:50:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:50:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-08-18 17:50:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-18 17:50:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:50:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:50:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:50:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:50:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:50:45,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:50:45,723 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 17:50:45,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:45 BoogieIcfgContainer [2020-08-18 17:50:45,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:50:45,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:50:45,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:50:45,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:50:45,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:50:44" (1/3) ... [2020-08-18 17:50:45,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466bdfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:45, skipping insertion in model container [2020-08-18 17:50:45,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:45" (2/3) ... [2020-08-18 17:50:45,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466bdfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:45, skipping insertion in model container [2020-08-18 17:50:45,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:45" (3/3) ... [2020-08-18 17:50:45,766 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-08-18 17:50:45,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:50:45,807 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:50:45,822 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:50:45,844 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:50:45,844 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:50:45,844 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:50:45,844 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:50:45,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:50:45,845 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:50:45,845 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:50:45,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:50:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-18 17:50:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 17:50:45,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:45,870 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] [2020-08-18 17:50:45,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times [2020-08-18 17:50:45,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:45,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061624887] [2020-08-18 17:50:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:50:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:50:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:50:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,154 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 17:50:46,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061624887] [2020-08-18 17:50:46,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:50:46,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:50:46,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182637325] [2020-08-18 17:50:46,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:50:46,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:50:46,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:50:46,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:50:46,180 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-18 17:50:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:50:46,487 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-18 17:50:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:50:46,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-18 17:50:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:50:46,502 INFO L225 Difference]: With dead ends: 79 [2020-08-18 17:50:46,502 INFO L226 Difference]: Without dead ends: 40 [2020-08-18 17:50:46,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 17:50:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-18 17:50:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-18 17:50:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-18 17:50:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-18 17:50:46,550 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-18 17:50:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:50:46,550 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-18 17:50:46,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:50:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-18 17:50:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 17:50:46,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:46,553 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] [2020-08-18 17:50:46,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:50:46,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:46,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times [2020-08-18 17:50:46,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:46,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826521268] [2020-08-18 17:50:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:50:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:50:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:50:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:46,751 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 17:50:46,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826521268] [2020-08-18 17:50:46,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:50:46,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:50:46,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686083054] [2020-08-18 17:50:46,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:50:46,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:50:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:50:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:50:46,756 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-18 17:50:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:50:47,024 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-18 17:50:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 17:50:47,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-18 17:50:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:50:47,028 INFO L225 Difference]: With dead ends: 59 [2020-08-18 17:50:47,028 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 17:50:47,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:50:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 17:50:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 17:50:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 17:50:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 17:50:47,043 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-18 17:50:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:50:47,043 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 17:50:47,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:50:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 17:50:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 17:50:47,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:47,045 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] [2020-08-18 17:50:47,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:50:47,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:47,046 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times [2020-08-18 17:50:47,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:47,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144034098] [2020-08-18 17:50:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:50:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:47,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:50:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:50:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:47,240 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 17:50:47,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144034098] [2020-08-18 17:50:47,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:50:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:50:47,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303472268] [2020-08-18 17:50:47,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:50:47,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:50:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:50:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:50:47,243 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-18 17:50:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:50:47,476 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-18 17:50:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 17:50:47,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-18 17:50:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:50:47,478 INFO L225 Difference]: With dead ends: 63 [2020-08-18 17:50:47,479 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 17:50:47,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:50:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 17:50:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-18 17:50:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 17:50:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 17:50:47,490 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-18 17:50:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:50:47,490 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 17:50:47,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:50:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 17:50:47,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 17:50:47,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:47,492 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] [2020-08-18 17:50:47,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:50:47,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:47,493 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times [2020-08-18 17:50:47,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:47,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128562128] [2020-08-18 17:50:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:50:47,543 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:50:47,544 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:50:47,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:50:47,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:50:47 BoogieIcfgContainer [2020-08-18 17:50:47,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:50:47,573 INFO L168 Benchmark]: Toolchain (without parser) took 2702.71 ms. Allocated memory was 147.8 MB in the beginning and 235.4 MB in the end (delta: 87.6 MB). Free memory was 103.2 MB in the beginning and 141.6 MB in the end (delta: -38.4 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:47,574 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 17:50:47,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.37 ms. Allocated memory is still 147.8 MB. Free memory was 102.8 MB in the beginning and 92.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:47,576 INFO L168 Benchmark]: Boogie Preprocessor took 154.86 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.0 MB in the beginning and 181.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:47,576 INFO L168 Benchmark]: RCFGBuilder took 416.77 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 161.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:47,577 INFO L168 Benchmark]: TraceAbstraction took 1830.59 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 161.5 MB in the beginning and 141.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:47,581 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 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.37 ms. Allocated memory is still 147.8 MB. Free memory was 102.8 MB in the beginning and 92.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.86 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.0 MB in the beginning and 181.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.77 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 161.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1830.59 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 161.5 MB in the beginning and 141.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L75] CALL, EXPR fmax_float(x, y) [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] RET, EXPR __fpclassify_float(x) [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] RET, EXPR fmax_float(x, y) [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...