/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=HIGHLEXORDER --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/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:54:09,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:54:09,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:54:10,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:54:10,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:54:10,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:54:10,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:54:10,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:54:10,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:54:10,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:54:10,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:54:10,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:54:10,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:54:10,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:54:10,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:54:10,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:54:10,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:54:10,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:54:10,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:54:10,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:54:10,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:54:10,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:54:10,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:54:10,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:54:10,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:54:10,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:54:10,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:54:10,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:54:10,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:54:10,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:54:10,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:54:10,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:54:10,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:54:10,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:54:10,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:54:10,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:54:10,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:54:10,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:54:10,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:54:10,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:54:10,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:54:10,061 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 18:54:10,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:54:10,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:54:10,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:54:10,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:54:10,086 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:54:10,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:54:10,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:54:10,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:54:10,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:54:10,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:54:10,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:54:10,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:54:10,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:54:10,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:54:10,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:54:10,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:54:10,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:54:10,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:54:10,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:54:10,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:54:10,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:54:10,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:54:10,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:54:10,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:54:10,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:54:10,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:54:10,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:54:10,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:54:10,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:54:10,091 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:54:10,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:54:10,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:54:10,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:54:10,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:54:10,408 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:54:10,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-08-21 18:54:10,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52e47b641/38266dede10c42cda43ff641203d4f9b/FLAGe8a71691d [2020-08-21 18:54:10,965 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:54:10,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-08-21 18:54:10,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52e47b641/38266dede10c42cda43ff641203d4f9b/FLAGe8a71691d [2020-08-21 18:54:11,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52e47b641/38266dede10c42cda43ff641203d4f9b [2020-08-21 18:54:11,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:54:11,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:54:11,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:11,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:54:11,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:54:11,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf7e795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11, skipping insertion in model container [2020-08-21 18:54:11,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:54:11,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:54:11,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:11,570 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:54:11,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:11,716 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:54:11,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11 WrapperNode [2020-08-21 18:54:11,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:11,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:54:11,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:54:11,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:54:11,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (1/1) ... [2020-08-21 18:54:11,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:54:11,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:54:11,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:54:11,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:54:11,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (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 18:54:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:54:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:54:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-21 18:54:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-08-21 18:54:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 18:54:11,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:54:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:54:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 18:54:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-21 18:54:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:54:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:54:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:54:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:54:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-08-21 18:54:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 18:54:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:54:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:54:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:54:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:54:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:54:12,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:54:12,164 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 18:54:12,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:12 BoogieIcfgContainer [2020-08-21 18:54:12,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:54:12,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:54:12,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:54:12,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:54:12,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:54:11" (1/3) ... [2020-08-21 18:54:12,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128176fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:12, skipping insertion in model container [2020-08-21 18:54:12,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:11" (2/3) ... [2020-08-21 18:54:12,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128176fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:12, skipping insertion in model container [2020-08-21 18:54:12,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:12" (3/3) ... [2020-08-21 18:54:12,191 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-08-21 18:54:12,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:54:12,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:54:12,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:54:12,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:54:12,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:54:12,278 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:54:12,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:54:12,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:54:12,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:54:12,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:54:12,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:54:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-21 18:54:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 18:54:12,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:12,316 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 18:54:12,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:12,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:12,323 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-08-21 18:54:12,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:12,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440609406] [2020-08-21 18:54:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:54:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:12,608 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 18:54:12,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440609406] [2020-08-21 18:54:12,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:12,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:54:12,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635096549] [2020-08-21 18:54:12,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:54:12,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:12,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:54:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:54:12,644 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-21 18:54:12,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:12,867 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-21 18:54:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:54:12,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-21 18:54:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:12,880 INFO L225 Difference]: With dead ends: 79 [2020-08-21 18:54:12,880 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 18:54:12,884 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 18:54:12,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 18:54:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-21 18:54:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 18:54:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-21 18:54:12,935 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-21 18:54:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:12,939 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-21 18:54:12,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:54:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-21 18:54:12,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 18:54:12,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:12,942 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 18:54:12,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:54:12,942 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:12,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-08-21 18:54:12,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:12,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814827429] [2020-08-21 18:54:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:54:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,126 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 18:54:13,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814827429] [2020-08-21 18:54:13,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:13,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:54:13,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707253548] [2020-08-21 18:54:13,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:54:13,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:13,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:54:13,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:54:13,131 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-21 18:54:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:13,399 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-21 18:54:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:54:13,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-21 18:54:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:13,407 INFO L225 Difference]: With dead ends: 59 [2020-08-21 18:54:13,407 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 18:54:13,409 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 18:54:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 18:54:13,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 18:54:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 18:54:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 18:54:13,437 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-21 18:54:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:13,438 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 18:54:13,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:54:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 18:54:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 18:54:13,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:13,441 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 18:54:13,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:54:13,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-08-21 18:54:13,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:13,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173800577] [2020-08-21 18:54:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:54:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:13,623 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 18:54:13,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173800577] [2020-08-21 18:54:13,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:13,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:54:13,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837239391] [2020-08-21 18:54:13,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:54:13,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:13,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:54:13,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:54:13,626 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-21 18:54:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:13,859 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-21 18:54:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:54:13,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 18:54:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:13,861 INFO L225 Difference]: With dead ends: 63 [2020-08-21 18:54:13,861 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 18:54:13,862 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 18:54:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 18:54:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 18:54:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 18:54:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 18:54:13,872 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-21 18:54:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:13,872 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 18:54:13,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:54:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 18:54:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 18:54:13,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:13,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:13,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:54:13,874 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-08-21 18:54:13,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:13,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506569958] [2020-08-21 18:54:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:54:13,898 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:54:13,898 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:54:13,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:54:13,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:54:13 BoogieIcfgContainer [2020-08-21 18:54:13,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:54:13,924 INFO L168 Benchmark]: Toolchain (without parser) took 2592.71 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 102.5 MB in the beginning and 141.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:13,925 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:54:13,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.47 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 181.2 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:13,928 INFO L168 Benchmark]: Boogie Preprocessor took 61.53 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:13,929 INFO L168 Benchmark]: RCFGBuilder took 390.06 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 158.2 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:13,930 INFO L168 Benchmark]: TraceAbstraction took 1748.97 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 157.5 MB in the beginning and 141.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:13,934 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.47 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 181.2 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.53 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.06 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 158.2 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1748.97 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 157.5 MB in the beginning and 141.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L81] CALL, EXPR fmax_double(x, y) [L52] CALL, EXPR __fpclassify_double(x) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] RET, EXPR __fpclassify_double(x) [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] RET, EXPR fmax_double(x, y) [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, 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, 0.2s 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...