/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:39:01,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:39:01,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:39:01,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:39:01,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:39:01,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:39:01,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:39:01,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:39:01,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:39:01,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:39:01,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:39:01,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:39:01,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:39:01,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:39:01,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:39:01,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:39:01,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:39:01,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:39:01,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:39:01,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:39:01,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:39:01,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:39:01,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:39:01,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:39:01,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:39:01,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:39:01,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:39:01,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:39:01,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:39:01,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:39:01,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:39:01,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:39:01,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:39:01,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:39:01,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:39:01,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:39:01,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:39:01,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:39:01,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:39:01,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:39:01,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:39:01,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:39:01,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:39:01,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:39:01,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:39:01,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:39:01,558 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:39:01,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:39:01,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:39:01,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:39:01,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:39:01,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:39:01,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:39:01,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:39:01,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:39:01,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:39:01,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:39:01,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:39:01,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:39:01,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:39:01,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:39:01,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:39:01,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:39:01,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:39:01,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:39:01,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:39:01,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:39:01,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:39:01,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:39:01,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:39:01,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:39:01,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:39:01,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:39:01,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:39:01,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:39:01,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:39:01,912 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:39:01,912 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-08-18 18:39:01,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e229e38/8c6d714758dc4c4bbccb64e09c119de6/FLAG3403839d0 [2020-08-18 18:39:02,423 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:39:02,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-08-18 18:39:02,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e229e38/8c6d714758dc4c4bbccb64e09c119de6/FLAG3403839d0 [2020-08-18 18:39:02,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e229e38/8c6d714758dc4c4bbccb64e09c119de6 [2020-08-18 18:39:02,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:39:02,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:39:02,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:39:02,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:39:02,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:39:02,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:39:02" (1/1) ... [2020-08-18 18:39:02,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:02, skipping insertion in model container [2020-08-18 18:39:02,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:39:02" (1/1) ... [2020-08-18 18:39:02,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:39:02,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:39:03,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:39:03,046 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:39:03,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:39:03,091 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:39:03,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03 WrapperNode [2020-08-18 18:39:03,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:39:03,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:39:03,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:39:03,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:39:03,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... [2020-08-18 18:39:03,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:39:03,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:39:03,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:39:03,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:39:03,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:39:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:39:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:39:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-18 18:39:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-08-18 18:39:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-18 18:39:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:39:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:39:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 18:39:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-18 18:39:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:39:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 18:39:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:39:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:39:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-08-18 18:39:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-18 18:39:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:39:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:39:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:39:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:39:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 18:39:03,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:39:03,640 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 18:39:03,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:39:03 BoogieIcfgContainer [2020-08-18 18:39:03,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:39:03,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:39:03,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:39:03,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:39:03,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:39:02" (1/3) ... [2020-08-18 18:39:03,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94706ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:39:03, skipping insertion in model container [2020-08-18 18:39:03,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:39:03" (2/3) ... [2020-08-18 18:39:03,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94706ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:39:03, skipping insertion in model container [2020-08-18 18:39:03,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:39:03" (3/3) ... [2020-08-18 18:39:03,653 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-08-18 18:39:03,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:39:03,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:39:03,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:39:03,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:39:03,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:39:03,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:39:03,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:39:03,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:39:03,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:39:03,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:39:03,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:39:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-18 18:39:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 18:39:03,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:39:03,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:39:03,735 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:39:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:39:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times [2020-08-18 18:39:03,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:39:03,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898813133] [2020-08-18 18:39:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:39:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:39:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:39:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:39:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:39:03,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898813133] [2020-08-18 18:39:03,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:39:03,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:39:03,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922727687] [2020-08-18 18:39:04,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:39:04,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:39:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:39:04,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:39:04,018 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-18 18:39:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:39:04,277 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-18 18:39:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:39:04,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-18 18:39:04,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:39:04,291 INFO L225 Difference]: With dead ends: 79 [2020-08-18 18:39:04,291 INFO L226 Difference]: Without dead ends: 40 [2020-08-18 18:39:04,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:39:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-18 18:39:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-18 18:39:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-18 18:39:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-18 18:39:04,348 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-18 18:39:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:39:04,349 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-18 18:39:04,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:39:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-18 18:39:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 18:39:04,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:39:04,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:39:04,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:39:04,353 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:39:04,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:39:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times [2020-08-18 18:39:04,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:39:04,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420996336] [2020-08-18 18:39:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:39:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:39:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:39:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:39:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:39:04,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420996336] [2020-08-18 18:39:04,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:39:04,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:39:04,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074555027] [2020-08-18 18:39:04,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:39:04,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:39:04,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:39:04,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:39:04,596 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-18 18:39:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:39:04,867 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-18 18:39:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:39:04,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-18 18:39:04,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:39:04,874 INFO L225 Difference]: With dead ends: 59 [2020-08-18 18:39:04,875 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 18:39:04,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:39:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 18:39:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 18:39:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 18:39:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 18:39:04,892 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-18 18:39:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:39:04,893 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 18:39:04,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:39:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 18:39:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 18:39:04,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:39:04,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:39:04,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:39:04,895 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:39:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:39:04,895 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times [2020-08-18 18:39:04,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:39:04,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970754848] [2020-08-18 18:39:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:39:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:39:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:39:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:39:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:39:05,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970754848] [2020-08-18 18:39:05,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:39:05,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:39:05,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548890355] [2020-08-18 18:39:05,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:39:05,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:39:05,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:39:05,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:39:05,027 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-18 18:39:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:39:05,218 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-18 18:39:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:39:05,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-18 18:39:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:39:05,221 INFO L225 Difference]: With dead ends: 63 [2020-08-18 18:39:05,221 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 18:39:05,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:39:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 18:39:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-18 18:39:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 18:39:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 18:39:05,232 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-18 18:39:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:39:05,232 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 18:39:05,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:39:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 18:39:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 18:39:05,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:39:05,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:39:05,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:39:05,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:39:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:39:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times [2020-08-18 18:39:05,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:39:05,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43432120] [2020-08-18 18:39:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:39:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:39:05,257 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:39:05,257 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:39:05,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:39:05,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:39:05 BoogieIcfgContainer [2020-08-18 18:39:05,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:39:05,284 INFO L168 Benchmark]: Toolchain (without parser) took 2479.28 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 101.8 MB in the beginning and 145.1 MB in the end (delta: -43.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:05,285 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:39:05,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.78 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 90.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:05,287 INFO L168 Benchmark]: Boogie Preprocessor took 134.58 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 90.7 MB in the beginning and 179.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:05,288 INFO L168 Benchmark]: RCFGBuilder took 416.84 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:05,289 INFO L168 Benchmark]: TraceAbstraction took 1635.74 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 158.7 MB in the beginning and 145.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:05,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.78 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 90.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.58 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 90.7 MB in the beginning and 179.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.84 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1635.74 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 158.7 MB in the beginning and 145.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L75] CALL, EXPR fmax_float(x, y) [L44] CALL, EXPR __fpclassify_float(x) [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; [L44] RET, EXPR __fpclassify_float(x) [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; [L75] RET, EXPR fmax_float(x, y) [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, 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...