/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:29:30,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:30,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:30,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:30,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:30,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:30,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:30,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:30,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:30,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:30,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:30,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:30,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:30,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:30,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:30,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:30,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:30,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:30,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:30,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:30,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:30,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:30,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:30,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:30,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:30,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:30,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:30,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:30,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:30,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:30,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:30,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:30,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:30,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:30,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:30,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:30,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:30,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:30,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:30,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:30,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:30,907 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 16:29:30,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:30,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:30,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:30,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:30,955 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:30,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:30,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:30,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:30,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:30,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:30,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:30,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:30,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:30,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:30,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:30,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:30,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:30,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:30,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:30,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:30,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:30,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:30,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:30,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:30,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:30,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:30,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:30,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:30,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:30,963 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:31,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:31,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:31,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:31,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:31,310 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:31,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-08-21 16:29:31,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c74e008b9/9e0c57017a0c4fc18ceee3d66ba16801/FLAG2c183a1e0 [2020-08-21 16:29:31,872 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:31,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-08-21 16:29:31,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c74e008b9/9e0c57017a0c4fc18ceee3d66ba16801/FLAG2c183a1e0 [2020-08-21 16:29:32,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c74e008b9/9e0c57017a0c4fc18ceee3d66ba16801 [2020-08-21 16:29:32,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:32,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:32,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:32,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:32,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:32,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32, skipping insertion in model container [2020-08-21 16:29:32,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:32,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:32,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:32,494 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:32,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:32,629 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:32,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32 WrapperNode [2020-08-21 16:29:32,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:32,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:32,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:32,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:32,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (1/1) ... [2020-08-21 16:29:32,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:32,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:32,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:32,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:32,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (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 16:29:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-21 16:29:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-08-21 16:29:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-21 16:29:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 16:29:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-21 16:29:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-08-21 16:29:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-21 16:29:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:33,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:33,100 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 16:29:33,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:33 BoogieIcfgContainer [2020-08-21 16:29:33,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:33,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:33,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:33,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:33,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:32" (1/3) ... [2020-08-21 16:29:33,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5a749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:33, skipping insertion in model container [2020-08-21 16:29:33,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:32" (2/3) ... [2020-08-21 16:29:33,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5a749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:33, skipping insertion in model container [2020-08-21 16:29:33,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:33" (3/3) ... [2020-08-21 16:29:33,113 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-08-21 16:29:33,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:33,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:33,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:33,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:33,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:33,171 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:33,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:33,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:33,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:33,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:33,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-21 16:29:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 16:29:33,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:33,210 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 16:29:33,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-08-21 16:29:33,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:33,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734870595] [2020-08-21 16:29:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:33,470 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 16:29:33,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734870595] [2020-08-21 16:29:33,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:33,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:33,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825500961] [2020-08-21 16:29:33,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:33,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:33,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:33,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:33,498 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-21 16:29:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:33,719 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-21 16:29:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:29:33,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-21 16:29:33,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:33,732 INFO L225 Difference]: With dead ends: 79 [2020-08-21 16:29:33,732 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 16:29:33,737 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 [2020-08-21 16:29:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 16:29:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-21 16:29:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 16:29:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-21 16:29:33,782 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-21 16:29:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:33,783 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-21 16:29:33,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-21 16:29:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 16:29:33,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:33,786 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 16:29:33,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:33,787 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-08-21 16:29:33,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:33,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419393103] [2020-08-21 16:29:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:34,061 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 16:29:34,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419393103] [2020-08-21 16:29:34,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:34,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:29:34,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801450714] [2020-08-21 16:29:34,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:29:34,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:29:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:29:34,068 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-21 16:29:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:34,369 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-21 16:29:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:29:34,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-21 16:29:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:34,376 INFO L225 Difference]: With dead ends: 59 [2020-08-21 16:29:34,377 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 16:29:34,380 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 [2020-08-21 16:29:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 16:29:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 16:29:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 16:29:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 16:29:34,406 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-21 16:29:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:34,407 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 16:29:34,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:29:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 16:29:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:29:34,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:34,409 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] [2020-08-21 16:29:34,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:34,409 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-08-21 16:29:34,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:34,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775598203] [2020-08-21 16:29:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:29:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:34,630 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 16:29:34,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775598203] [2020-08-21 16:29:34,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:34,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:29:34,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454603940] [2020-08-21 16:29:34,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:29:34,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:34,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:29:34,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:29:34,635 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-21 16:29:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:34,885 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-21 16:29:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:29:34,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 16:29:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:34,887 INFO L225 Difference]: With dead ends: 63 [2020-08-21 16:29:34,887 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 16:29:34,889 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 [2020-08-21 16:29:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 16:29:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 16:29:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 16:29:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 16:29:34,909 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-21 16:29:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:34,909 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 16:29:34,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:29:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 16:29:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:29:34,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:34,913 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] [2020-08-21 16:29:34,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:29:34,913 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-08-21 16:29:34,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:34,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11345725] [2020-08-21 16:29:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:34,957 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:34,958 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:34,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:29:34,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:34 BoogieIcfgContainer [2020-08-21 16:29:34,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:34,993 INFO L168 Benchmark]: Toolchain (without parser) took 2750.94 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 104.1 MB in the beginning and 139.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:34,995 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 16:29:34,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.73 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 182.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:34,998 INFO L168 Benchmark]: Boogie Preprocessor took 56.37 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 179.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:35,000 INFO L168 Benchmark]: RCFGBuilder took 416.85 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 159.8 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:35,007 INFO L168 Benchmark]: TraceAbstraction took 1883.71 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 159.8 MB in the beginning and 139.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:35,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.73 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 182.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.37 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 179.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.85 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 159.8 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1883.71 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 159.8 MB in the beginning and 139.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L66] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] RET, EXPR fmin_float(x, y) [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __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, 0.5s 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...