/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:14:12,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:14:12,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:14:12,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:14:12,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:14:12,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:14:12,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:14:12,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:14:12,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:14:12,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:14:12,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:14:12,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:14:12,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:14:12,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:14:12,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:14:12,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:14:12,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:14:12,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:14:12,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:14:12,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:14:12,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:14:12,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:14:12,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:14:12,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:14:12,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:14:12,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:14:12,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:14:12,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:14:12,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:14:12,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:14:12,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:14:12,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:14:12,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:14:12,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:14:12,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:14:12,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:14:12,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:14:12,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:14:12,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:14:12,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:14:12,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:14:12,130 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 [2020-08-22 06:14:12,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:14:12,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:14:12,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:14:12,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:14:12,157 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:14:12,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:14:12,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:14:12,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:14:12,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:14:12,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:14:12,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:14:12,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:14:12,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:14:12,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:14:12,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:14:12,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:14:12,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:14:12,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:14:12,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:14:12,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:14:12,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:14:12,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:14:12,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:14:12,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:14:12,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:14:12,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:14:12,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:14:12,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:14:12,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:14:12,162 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:14:12,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:14:12,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:14:12,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:14:12,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:14:12,496 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:14:12,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-08-22 06:14:12,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51cc7de58/c896ae35ded442ecadc00e91551ed967/FLAG826777070 [2020-08-22 06:14:13,048 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:14:13,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-08-22 06:14:13,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51cc7de58/c896ae35ded442ecadc00e91551ed967/FLAG826777070 [2020-08-22 06:14:13,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51cc7de58/c896ae35ded442ecadc00e91551ed967 [2020-08-22 06:14:13,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:14:13,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:14:13,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:14:13,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:14:13,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:14:13,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:13,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdab4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13, skipping insertion in model container [2020-08-22 06:14:13,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:13,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:14:13,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:14:13,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:14:13,794 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:14:13,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:14:13,954 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:14:13,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13 WrapperNode [2020-08-22 06:14:13,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:14:13,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:14:13,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:14:13,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:14:13,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:13,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:13,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:13,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:14,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:14,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:14,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (1/1) ... [2020-08-22 06:14:14,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:14:14,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:14:14,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:14:14,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:14:14,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (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 [2020-08-22 06:14:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:14:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:14:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-22 06:14:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-08-22 06:14:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 06:14:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:14:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:14:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 06:14:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-22 06:14:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:14:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 06:14:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:14:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:14:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 06:14:14,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:14:14,470 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 06:14:14,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:14:14 BoogieIcfgContainer [2020-08-22 06:14:14,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:14:14,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:14:14,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:14:14,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:14:14,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:14:13" (1/3) ... [2020-08-22 06:14:14,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472bb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:14:14, skipping insertion in model container [2020-08-22 06:14:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:14:13" (2/3) ... [2020-08-22 06:14:14,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472bb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:14:14, skipping insertion in model container [2020-08-22 06:14:14,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:14:14" (3/3) ... [2020-08-22 06:14:14,482 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-08-22 06:14:14,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:14:14,499 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:14:14,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:14:14,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:14:14,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:14:14,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:14:14,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:14:14,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:14:14,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:14:14,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:14:14,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:14:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-22 06:14:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 06:14:14,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:14:14,560 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] [2020-08-22 06:14:14,560 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:14:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:14:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times [2020-08-22 06:14:14,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:14:14,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109419997] [2020-08-22 06:14:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:14:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:14:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:14:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:14:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:14:14,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109419997] [2020-08-22 06:14:14,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:14:14,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:14:14,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249705862] [2020-08-22 06:14:14,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:14:14,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:14:14,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:14:14,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:14:14,885 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-22 06:14:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:14:15,119 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-22 06:14:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:14:15,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-22 06:14:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:14:15,131 INFO L225 Difference]: With dead ends: 79 [2020-08-22 06:14:15,131 INFO L226 Difference]: Without dead ends: 40 [2020-08-22 06:14:15,136 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 [2020-08-22 06:14:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-22 06:14:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-22 06:14:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 06:14:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-22 06:14:15,215 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-22 06:14:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:14:15,218 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-22 06:14:15,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:14:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-22 06:14:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 06:14:15,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:14:15,224 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] [2020-08-22 06:14:15,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:14:15,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:14:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:14:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times [2020-08-22 06:14:15,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:14:15,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115293176] [2020-08-22 06:14:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:14:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:14:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:14:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:14:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:14:15,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115293176] [2020-08-22 06:14:15,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:14:15,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:14:15,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758291071] [2020-08-22 06:14:15,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:14:15,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:14:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:14:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:14:15,443 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-22 06:14:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:14:15,786 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-22 06:14:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:14:15,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-22 06:14:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:14:15,790 INFO L225 Difference]: With dead ends: 59 [2020-08-22 06:14:15,791 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 06:14:15,792 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 [2020-08-22 06:14:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 06:14:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-22 06:14:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 06:14:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 06:14:15,817 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-22 06:14:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:14:15,818 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 06:14:15,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:14:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 06:14:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 06:14:15,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:14:15,822 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] [2020-08-22 06:14:15,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:14:15,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:14:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:14:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times [2020-08-22 06:14:15,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:14:15,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096067062] [2020-08-22 06:14:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:14:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:14:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:14:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:14:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:14:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:14:16,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096067062] [2020-08-22 06:14:16,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:14:16,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:14:16,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82237374] [2020-08-22 06:14:16,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:14:16,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:14:16,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:14:16,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:14:16,017 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-22 06:14:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:14:16,262 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-22 06:14:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:14:16,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-22 06:14:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:14:16,265 INFO L225 Difference]: With dead ends: 63 [2020-08-22 06:14:16,265 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 06:14:16,266 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 [2020-08-22 06:14:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 06:14:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-22 06:14:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 06:14:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 06:14:16,276 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-22 06:14:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:14:16,277 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 06:14:16,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:14:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 06:14:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 06:14:16,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:14:16,278 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] [2020-08-22 06:14:16,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:14:16,279 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:14:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:14:16,279 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times [2020-08-22 06:14:16,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:14:16,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253802914] [2020-08-22 06:14:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:14:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:14:16,301 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:14:16,301 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:14:16,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:14:16,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:14:16 BoogieIcfgContainer [2020-08-22 06:14:16,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:14:16,327 INFO L168 Benchmark]: Toolchain (without parser) took 2882.42 ms. Allocated memory was 137.4 MB in the beginning and 229.1 MB in the end (delta: 91.8 MB). Free memory was 100.2 MB in the beginning and 141.2 MB in the end (delta: -41.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:14:16,328 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 06:14:16,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.22 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 177.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:14:16,330 INFO L168 Benchmark]: Boogie Preprocessor took 63.65 ms. Allocated memory is still 200.3 MB. Free memory was 177.8 MB in the beginning and 175.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:14:16,330 INFO L168 Benchmark]: RCFGBuilder took 454.68 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 155.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:14:16,332 INFO L168 Benchmark]: TraceAbstraction took 1848.28 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 155.6 MB in the beginning and 141.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:14:16,336 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 509.22 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 177.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.65 ms. Allocated memory is still 200.3 MB. Free memory was 177.8 MB in the beginning and 175.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.68 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 155.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1848.28 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 155.6 MB in the beginning and 141.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 43.3 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 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L75] CALL, EXPR fmax_float(x, y) [L44] CALL, EXPR __fpclassify_float(x) [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; [L44] RET, EXPR __fpclassify_float(x) [L44] COND TRUE __fpclassify_float(x) == 0 [L45] 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...