/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:56,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:56,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:56,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:56,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:56,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:56,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:56,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:56,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:56,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:56,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:56,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:56,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:56,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:56,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:56,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:56,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:56,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:56,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:56,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:56,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:56,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:56,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:56,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:56,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:56,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:56,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:56,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:56,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:56,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:56,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:56,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:56,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:56,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:56,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:56,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:56,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:56,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:56,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:56,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:56,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:56,647 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 [2020-10-27 19:44:56,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:56,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:56,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:56,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:56,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:56,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:56,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:56,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:56,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:56,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:56,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:56,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:56,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:56,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:56,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:56,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:56,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:56,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:56,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:56,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:56,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:56,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:56,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:56,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:56,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:56,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:56,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:56,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:56,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:56,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:57,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:57,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:57,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:57,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:57,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:57,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-27 19:44:57,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/420950caf/d65223735b7f44f7afb55fe2fd842ec8/FLAG86d900341 [2020-10-27 19:44:57,993 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:57,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-27 19:44:58,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/420950caf/d65223735b7f44f7afb55fe2fd842ec8/FLAG86d900341 [2020-10-27 19:44:58,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/420950caf/d65223735b7f44f7afb55fe2fd842ec8 [2020-10-27 19:44:58,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:58,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:58,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:58,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:58,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:58,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633b61c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58, skipping insertion in model container [2020-10-27 19:44:58,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:58,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:58,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:58,629 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:58,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:58,706 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:58,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58 WrapperNode [2020-10-27 19:44:58,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:58,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:58,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:58,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:58,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:58,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:58,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:58,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:58,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (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 [2020-10-27 19:44:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 19:44:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 19:44:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 19:44:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 19:44:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:59,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:59,753 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-27 19:44:59,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:59 BoogieIcfgContainer [2020-10-27 19:44:59,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:59,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:59,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:59,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:59,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:58" (1/3) ... [2020-10-27 19:44:59,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c105264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:59, skipping insertion in model container [2020-10-27 19:44:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58" (2/3) ... [2020-10-27 19:44:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c105264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:59, skipping insertion in model container [2020-10-27 19:44:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:59" (3/3) ... [2020-10-27 19:44:59,765 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2020-10-27 19:44:59,778 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:59,783 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:59,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:59,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:59,830 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:59,830 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:59,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:59,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:59,830 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:59,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:59,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-27 19:44:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:44:59,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:59,861 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] [2020-10-27 19:44:59,862 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:59,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:59,869 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-27 19:44:59,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:59,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864422461] [2020-10-27 19:44:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:00,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 19:45:00,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-27 19:45:00,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 19:45:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 19:45:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:45:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:45:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 19:45:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 19:45:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:00,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:00,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:45:00,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:00,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864422461] [2020-10-27 19:45:00,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:00,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:45:00,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261137600] [2020-10-27 19:45:00,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:45:00,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:00,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:45:00,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:45:00,689 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-27 19:45:00,837 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-27 19:45:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:01,217 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-27 19:45:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:45:01,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 19:45:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:01,230 INFO L225 Difference]: With dead ends: 107 [2020-10-27 19:45:01,231 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 19:45:01,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:45:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 19:45:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 19:45:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 19:45:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-27 19:45:01,308 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-27 19:45:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:01,309 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-27 19:45:01,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:45:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-27 19:45:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:45:01,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:01,311 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] [2020-10-27 19:45:01,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:01,311 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:01,313 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-27 19:45:01,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:01,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52608668] [2020-10-27 19:45:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:01,394 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:01,395 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:01,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:45:01,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:01 BoogieIcfgContainer [2020-10-27 19:45:01,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:01,427 INFO L168 Benchmark]: Toolchain (without parser) took 3071.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 125.6 MB in the end (delta: 891.1 kB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,428 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:01,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 113.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,431 INFO L168 Benchmark]: Boogie Preprocessor took 86.48 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 111.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,432 INFO L168 Benchmark]: RCFGBuilder took 958.68 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 120.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,433 INFO L168 Benchmark]: TraceAbstraction took 1664.79 ms. Allocated memory is still 151.0 MB. Free memory was 119.9 MB in the beginning and 125.6 MB in the end (delta: -5.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:01,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 340.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 113.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.48 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 111.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 958.68 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 120.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1664.79 ms. Allocated memory is still 151.0 MB. Free memory was 119.9 MB in the beginning and 125.6 MB in the end (delta: -5.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L119] float x = 1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L121] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1122a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 70 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...