/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:25,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:25,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:25,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:25,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:25,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:25,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:25,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:25,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:25,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:25,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:25,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:25,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:25,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:25,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:25,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:25,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:25,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:25,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:25,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:25,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:25,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:25,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:25,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:25,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:45:25,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:45:25,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:45:25,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:45:25,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:45:25,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:45:25,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:45:25,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:45:25,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:45:25,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:45:25,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:45:25,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:45:25,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:45:25,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:45:25,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:25,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:25,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:25,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:45:25,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:25,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:25,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:25,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:25,362 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:25,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:25,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:25,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:25,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:25,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:25,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:25,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:25,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:25,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:25,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:25,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:25,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:25,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:25,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:25,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:25,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:25,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:25,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:25,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:25,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:25,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:25,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:25,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:25,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:25,368 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:45:25,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:25,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:25,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:25,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:25,694 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:25,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-07-20 10:45:25,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7acb117b/b1a49be34bf04f02bdf0b93db66d9f27/FLAGd1c4231bc [2020-07-20 10:45:26,211 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:26,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-07-20 10:45:26,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7acb117b/b1a49be34bf04f02bdf0b93db66d9f27/FLAGd1c4231bc [2020-07-20 10:45:26,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7acb117b/b1a49be34bf04f02bdf0b93db66d9f27 [2020-07-20 10:45:26,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:26,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:26,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:26,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:26,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:26,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23276232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26, skipping insertion in model container [2020-07-20 10:45:26,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:26,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:26,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:26,810 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:26,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:26,859 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:26,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26 WrapperNode [2020-07-20 10:45:26,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:26,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:26,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:26,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:26,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... [2020-07-20 10:45:26,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:26,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:26,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:26,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:26,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 10:45:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:27,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:27,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-20 10:45:27,053 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-07-20 10:45:27,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-20 10:45:27,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-20 10:45:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-07-20 10:45:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-20 10:45:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:27,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:27,330 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 10:45:27,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:27 BoogieIcfgContainer [2020-07-20 10:45:27,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:27,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:27,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:27,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:27,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:26" (1/3) ... [2020-07-20 10:45:27,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34af10c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:27, skipping insertion in model container [2020-07-20 10:45:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:26" (2/3) ... [2020-07-20 10:45:27,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34af10c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:27, skipping insertion in model container [2020-07-20 10:45:27,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:27" (3/3) ... [2020-07-20 10:45:27,347 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-07-20 10:45:27,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:27,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:27,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:27,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:27,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:27,431 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:27,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:27,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:27,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:27,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:27,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:27,453 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 10:45:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 10:45:27,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:27,462 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] [2020-07-20 10:45:27,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1674881228, now seen corresponding path program 1 times [2020-07-20 10:45:27,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:27,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317139335] [2020-07-20 10:45:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:27,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:27,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:27,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317139335] [2020-07-20 10:45:27,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:27,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:27,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457875834] [2020-07-20 10:45:27,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:27,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:27,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:27,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:27,630 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-20 10:45:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:27,655 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-20 10:45:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:27,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-20 10:45:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:27,667 INFO L225 Difference]: With dead ends: 71 [2020-07-20 10:45:27,667 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 10:45:27,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 10:45:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 10:45:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 10:45:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-20 10:45:27,719 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-20 10:45:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:27,720 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-20 10:45:27,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-20 10:45:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 10:45:27,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:27,723 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, 1] [2020-07-20 10:45:27,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:27,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:27,939 INFO L82 PathProgramCache]: Analyzing trace with hash 312623789, now seen corresponding path program 1 times [2020-07-20 10:45:27,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:27,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231967398] [2020-07-20 10:45:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:28,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:28,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:28,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:28,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231967398] [2020-07-20 10:45:28,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:28,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:28,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912761908] [2020-07-20 10:45:28,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:28,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:28,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:28,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:28,094 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-20 10:45:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:28,124 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-20 10:45:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:28,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-20 10:45:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:28,128 INFO L225 Difference]: With dead ends: 51 [2020-07-20 10:45:28,128 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 10:45:28,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 10:45:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 10:45:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 10:45:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 10:45:28,140 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-20 10:45:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:28,141 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 10:45:28,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 10:45:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 10:45:28,142 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:28,143 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, 1, 1, 1, 1] [2020-07-20 10:45:28,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:28,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:28,358 INFO L82 PathProgramCache]: Analyzing trace with hash -409741261, now seen corresponding path program 1 times [2020-07-20 10:45:28,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:28,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413710800] [2020-07-20 10:45:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:28,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:28,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:28,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:28,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413710800] [2020-07-20 10:45:28,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:28,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:28,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80484649] [2020-07-20 10:45:28,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:28,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:28,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:28,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:28,447 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 10:45:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:28,477 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 10:45:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:28,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 10:45:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:28,480 INFO L225 Difference]: With dead ends: 55 [2020-07-20 10:45:28,480 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 10:45:28,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 10:45:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-20 10:45:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 10:45:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 10:45:28,490 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-20 10:45:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:28,490 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 10:45:28,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 10:45:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 10:45:28,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:28,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:45:28,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:28,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1097810548, now seen corresponding path program 1 times [2020-07-20 10:45:28,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:28,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628715925] [2020-07-20 10:45:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:28,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:28,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:28,852 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:28,852 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:29,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:29,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:29 BoogieIcfgContainer [2020-07-20 10:45:29,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:29,098 INFO L168 Benchmark]: Toolchain (without parser) took 2511.64 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 104.1 MB in the beginning and 198.5 MB in the end (delta: -94.5 MB). Peak memory consumption was 427.3 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:29,098 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:29,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.34 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:29,100 INFO L168 Benchmark]: Boogie Preprocessor took 124.64 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 180.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:29,101 INFO L168 Benchmark]: RCFGBuilder took 351.53 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 161.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:29,102 INFO L168 Benchmark]: TraceAbstraction took 1757.17 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 161.2 MB in the beginning and 198.5 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:29,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.34 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.64 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 180.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.53 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 161.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1757.17 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 161.2 MB in the beginning and 198.5 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=3, \old(y)=4] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=3] [L12] __uint32_t w; VAL [\old(x)=3, x=3] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=3, w=2139095041, x=3] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=3, w=2139095041, x=3] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=3, w=2139095041, x=3] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; VAL [\old(x)=3, \result=0, w=2139095041, x=3] [L35] RET, EXPR __fpclassify_float(x) VAL [\old(x)=3, \old(y)=4, __fpclassify_float(x)=0, x=3, y=4] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; VAL [\old(x)=3, \old(y)=4, \result=4, x=3, y=4] [L56] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4, x=3, y=4] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=4] [L44] return x != x; VAL [\old(x)=4, \result=0, x=4] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4, x=3, y=4] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 7 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...